inet6.py revision b5d49cd73a38b87d2a62a74452d3cb0932e6aa7b
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 22614f54fc4b269030ba2934b6c353fb43de886e04Phil 23d7dd2222e18718ea755fe780e8ef422901ba5b0bPhilimport socket 24d7dd2222e18718ea755fe780e8ef422901ba5b0bPhilif not socket.has_ipv6: 25d7dd2222e18718ea755fe780e8ef422901ba5b0bPhil raise socket.error("can't use AF_INET6, IPv6 is disabled") 2681dfaee354bef2beea581a3c83a33c856ade45e5Dirk Lossif not hasattr(socket, "IPPROTO_IPV6"): 2781dfaee354bef2beea581a3c83a33c856ade45e5Dirk Loss # Workaround for http://bugs.python.org/issue6926 2881dfaee354bef2beea581a3c83a33c856ade45e5Dirk Loss socket.IPPROTO_IPV6 = 41 29d7dd2222e18718ea755fe780e8ef422901ba5b0bPhil 30d7dd2222e18718ea755fe780e8ef422901ba5b0bPhilfrom scapy.config import conf 31614f54fc4b269030ba2934b6c353fb43de886e04Philfrom scapy.layers.l2 import * 32614f54fc4b269030ba2934b6c353fb43de886e04Philfrom scapy.layers.inet import * 33614f54fc4b269030ba2934b6c353fb43de886e04Philfrom scapy.fields import * 34614f54fc4b269030ba2934b6c353fb43de886e04Philfrom scapy.packet import * 35614f54fc4b269030ba2934b6c353fb43de886e04Philfrom scapy.volatile import * 36614f54fc4b269030ba2934b6c353fb43de886e04Philfrom scapy.sendrecv import sr,sr1,srp1 37614f54fc4b269030ba2934b6c353fb43de886e04Philfrom scapy.as_resolvers import AS_resolver_riswhois 38614f54fc4b269030ba2934b6c353fb43de886e04Philfrom scapy.supersocket import SuperSocket,L3RawSocket 39614f54fc4b269030ba2934b6c353fb43de886e04Philfrom scapy.arch import * 4072461d0c00f182855906e57dcf6223aa9f1d8b31Philfrom scapy.utils6 import * 41c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 42c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 43c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 44c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Helpers ## 45c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 46c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 47c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef get_cls(name, fallback_cls): 48614f54fc4b269030ba2934b6c353fb43de886e04Phil return globals().get(name, fallback_cls) 49c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 50c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 51c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil########################## 52c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil## Neighbor cache stuff ## 53c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil########################## 54c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 55f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Philconf.netcache.new_cache("in6_neighbor", 120) 56c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 57c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef neighsol(addr, src, iface, timeout=1, chainCC=0): 58c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 59c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Sends an ICMPv6 Neighbor Solicitation message to get the MAC address 60c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil of the neighbor with specified IPv6 address addr. 'src' address is 61c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil used as source of the message. Message is sent on iface. By default, 62c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil timeout waiting for an answer is 1 second. 63c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 64c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil If no answer is gathered, None is returned. Else, the answer is 65c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil returned (ethernet frame). 66c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 67c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 68c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil nsma = in6_getnsma(inet_pton(socket.AF_INET6, addr)) 69c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil d = inet_ntop(socket.AF_INET6, nsma) 70c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil dm = in6_getnsmac(nsma) 71c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil p = Ether(dst=dm)/IPv6(dst=d, src=src, hlim=255) 72c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil p /= ICMPv6ND_NS(tgt=addr) 73c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil p /= ICMPv6NDOptSrcLLAddr(lladdr=get_if_hwaddr(iface)) 74c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res = srp1(p,type=ETH_P_IPV6, iface=iface, timeout=1, verbose=0, 75c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil chainCC=chainCC) 76c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 77c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return res 78c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 79c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef getmacbyip6(ip6, chainCC=0): 80c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 81c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Returns the mac address to be used for provided 'ip6' peer. 82c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil neighborCache.get() method is used on instantiated neighbor cache. 83c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Resolution mechanism is described in associated doc string. 84c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 85c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil (chainCC parameter value ends up being passed to sending function 86c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil used to perform the resolution, if needed) 87c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 88f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil 89f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil if in6_ismaddr(ip6): # Multicast 90f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil mac = in6_getnsmac(inet_pton(socket.AF_INET6, ip6)) 91f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil return mac 92f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil 93f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil iff,a,nh = conf.route6.route(ip6, dev=conf.iface6) 94f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil 95f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil if iff == LOOPBACK_NAME: 96f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil return "ff:ff:ff:ff:ff:ff" 97f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil 98f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil if nh != '::': 99f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil ip6 = nh # Found next hop 100f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil 101f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil mac = conf.netcache.in6_neighbor.get(ip6) 102f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil if mac: 103f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil return mac 104f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil 105f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil res = neighsol(ip6, a, iff, chainCC=chainCC) 106f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil 107f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil if res is not None: 108f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil mac = res.src 109f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil conf.netcache.in6_neighbor[ip6] = mac 110f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil return mac 111f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil 112f631c21842a8c9cd2e9ca4fb2eccb6b08f030e31Phil return None 113c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 114c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 115c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 116c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 117c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil### IPv6 addresses manipulation routines ### 118c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 119c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 120c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 121c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass Net6(Gen): # syntax ex. fec0::/126 122c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """Generate a list of IPv6s from a network address or a name""" 123c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ipv6" 124c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ipaddress = re.compile(r"^([a-fA-F0-9:]+)(/[1]?[0-3]?[0-9])?$") 125c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 126c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, net): 127c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.repr = net 128c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 129c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil tmp = net.split('/')+["128"] 130c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if not self.ipaddress.match(net): 131c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil tmp[0]=socket.getaddrinfo(tmp[0], None, socket.AF_INET6)[0][-1][0] 132c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 133c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil netmask = int(tmp[1]) 13477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil self.net = inet_pton(socket.AF_INET6, tmp[0]) 135c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.mask = in6_cidr2mask(netmask) 13677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil self.plen = netmask 137c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 138c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __iter__(self): 139c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def m8(i): 14077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil if i % 8 == 0: 141c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return i 142c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil tuple = filter(lambda x: m8(x), xrange(8, 129)) 143c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 144c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil a = in6_and(self.net, self.mask) 145c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil tmp = map(lambda x: x, struct.unpack('16B', a)) 146c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 147c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def parse_digit(a, netmask): 148c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil netmask = min(8,max(netmask,0)) 149c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil a = (int(a) & (0xffL<<netmask),(int(a) | (0xffL>>(8-netmask)))+1) 150c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return a 151c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.parsed = map(lambda x,y: parse_digit(x,y), tmp, map(lambda x,nm=self.plen: x-nm, tuple)) 152c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 153c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def rec(n, l): 15477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil if n and n % 2 == 0: 15577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil sep = ':' 15677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil else: 157c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil sep = '' 158c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if n == 16: 15977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return l 160c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 16177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil ll = [] 16277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil for i in xrange(*self.parsed[n]): 16377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil for y in l: 16477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil ll += [y+sep+'%.2x'%i] 16577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return rec(n+1, ll) 166c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 167c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return iter(rec(0, [''])) 168c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 169c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __repr__(self): 170c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "<Net6 %s>" % self.repr 171c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 172c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 173c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 174c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 175c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 176c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 177c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 178c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 179c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil### IPv6 Class ### 180c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 181c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 182c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 183c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass IP6Field(Field): 184c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, name, default): 185c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Field.__init__(self, name, default, "16s") 186c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def h2i(self, pkt, x): 187c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if type(x) is str: 188c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil try: 18977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil x = in6_ptop(x) 190c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil except socket.error: 191c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = Net6(x) 192c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif type(x) is list: 193c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = map(Net6, x) 194c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return x 195c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2m(self, pkt, x): 196c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return inet_pton(socket.AF_INET6, x) 197c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def m2i(self, pkt, x): 198c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return inet_ntop(socket.AF_INET6, x) 199c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def any2i(self, pkt, x): 200c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.h2i(pkt,x) 201c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2repr(self, pkt, x): 202c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x is None: 20377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return self.i2h(pkt,x) 20477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil elif not isinstance(x, Net6) and not type(x) is list: 20577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil if in6_isaddrTeredo(x): # print Teredo info 20677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil server, flag, maddr, mport = teredoAddrExtractInfo(x) 20777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return "%s [Teredo srv: %s cli: %s:%s]" % (self.i2h(pkt, x), server, maddr,mport) 20877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil elif in6_isaddr6to4(x): # print encapsulated address 209c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil vaddr = in6_6to4ExtractAddr(x) 21077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return "%s [6to4 GW: %s]" % (self.i2h(pkt, x), vaddr) 21177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return self.i2h(pkt, x) # No specific information to return 21251db482d4ed62a5eb7b70c0c4f7a3954d41b6165Phil def randval(self): 21351db482d4ed62a5eb7b70c0c4f7a3954d41b6165Phil return RandIP6() 214c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 215c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass SourceIP6Field(IP6Field): 216c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, name, dstname): 217c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field.__init__(self, name, None) 218c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.dstname = dstname 219c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2m(self, pkt, x): 220c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x is None: 221c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil dst=getattr(pkt,self.dstname) 222c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil iff,x,nh = conf.route6.route(dst) 223c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return IP6Field.i2m(self, pkt, x) 224c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2h(self, pkt, x): 225c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x is None: 226c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil dst=getattr(pkt,self.dstname) 227c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if isinstance(dst,Gen): 228c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil r = map(conf.route6.route, dst) 229c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil r.sort() 230c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if r[0] == r[-1]: 231c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x=r[0][1] 232c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 233c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil warning("More than one possible route for %s"%repr(dst)) 234c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return None 235c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 23677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil iff,x,nh = conf.route6.route(dst) 237c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return IP6Field.i2h(self, pkt, x) 238c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 239c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilipv6nh = { 0:"Hop-by-Hop Option Header", 240c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4:"IP", 241c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 6:"TCP", 242c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 17:"UDP", 243c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 41:"IPv6", 244c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 43:"Routing Header", 245c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 44:"Fragment Header", 246c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 47:"GRE", 247c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 50:"ESP Header", 248c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 51:"AH Header", 249c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 58:"ICMPv6", 250c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 59:"No Next Header", 251c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 60:"Destination Option Header", 252c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 135:"Mobility Header"} 253c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 254c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilipv6nhcls = { 0: "IPv6ExtHdrHopByHop", 255c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: "IP", 256c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 6: "TCP", 257c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 17: "UDP", 258c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 43: "IPv6ExtHdrRouting", 259c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 44: "IPv6ExtHdrFragment", 260c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #50: "IPv6ExtHrESP", 261c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #51: "IPv6ExtHdrAH", 26277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 58: "ICMPv6Unknown", 263c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 59: "Raw", 264c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 60: "IPv6ExtHdrDestOpt" } 265c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 266c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass IP6ListField(StrField): 267c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil islist = 1 268c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, name, default, count_from=None, length_from=None): 269c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if default is None: 270c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil default = [] 271c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrField.__init__(self, name, default) 272c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.count_from = count_from 273c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.length_from = length_from 274c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 275c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2len(self, pkt, i): 276c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 16*len(i) 277c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 278c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2count(self, pkt, i): 279c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if type(i) is list: 280c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return len(i) 281c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 282c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 283c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def getfield(self, pkt, s): 284c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil c = l = None 285c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.length_from is not None: 286c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = self.length_from(pkt) 287c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif self.count_from is not None: 288c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil c = self.count_from(pkt) 289c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 290c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil lst = [] 291c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ret = "" 292c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil remain = s 293c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l is not None: 294c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil remain,ret = s[:l],s[l:] 295c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while remain: 296c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if c is not None: 297c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if c <= 0: 298c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil break 299c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil c -= 1 300c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil addr = inet_ntop(socket.AF_INET6, remain[:16]) 301c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil lst.append(addr) 302c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil remain = remain[16:] 303c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return remain+ret,lst 304c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 305c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2m(self, pkt, x): 30677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil s = '' 307c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil for y in x: 308c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil try: 309c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil y = inet_pton(socket.AF_INET6, y) 310c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil except: 311c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil y = socket.getaddrinfo(y, None, socket.AF_INET6)[0][-1][0] 312c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil y = inet_pton(socket.AF_INET6, y) 313c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s += y 31477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return s 315c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 316c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2repr(self,pkt,x): 317c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s = [] 31877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil if x == None: 31977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return "[]" 32077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil for y in x: 32177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil s.append('%s' % y) 322c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "[ %s ]" % (", ".join(s)) 32377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 32477132687c31a9d3f30c3992c70eb24d1ac0948a7Philclass _IPv6GuessPayload: 325c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "Dummy class that implements guess_payload_class() for IPv6" 326c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def default_payload_class(self,p): 327c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.nh == 58 and len(p) > 2: 328c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil t = ord(p[0]) 329c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if t == 139 or t == 140: # Node Info Query 330c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return _niquery_guesser(p) 331c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return get_cls(icmp6typescls.get(t,"Raw"), "Raw") 332c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif self.nh == 135 and len(p) > 3: 333c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return _mip6_mhtype2cls.get(ord(p[2]), MIP6MH_Generic) 33477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil else: 33577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return get_cls(ipv6nhcls.get(self.nh,"Raw"), "Raw") 336c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 337c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass IPv6(_IPv6GuessPayload, Packet, IPTools): 338c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6" 339c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ BitField("version" , 6 , 4), 340c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("tc", 0, 8), #TODO: IPv6, ByteField ? 34177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil BitField("fl", 0, 20), 34277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil ShortField("plen", None), 343c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("nh", 59, ipv6nh), 344c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("hlim", 64), 345c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil SourceIP6Field("src", "dst"), # dst is for src @ selection 346c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("dst", "::1") ] 347614f54fc4b269030ba2934b6c353fb43de886e04Phil 348614f54fc4b269030ba2934b6c353fb43de886e04Phil def route(self): 349614f54fc4b269030ba2934b6c353fb43de886e04Phil dst = self.dst 350614f54fc4b269030ba2934b6c353fb43de886e04Phil if isinstance(dst,Gen): 351614f54fc4b269030ba2934b6c353fb43de886e04Phil dst = iter(dst).next() 352614f54fc4b269030ba2934b6c353fb43de886e04Phil return conf.route6.route(dst) 353614f54fc4b269030ba2934b6c353fb43de886e04Phil 354c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def mysummary(self): 355c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "%s > %s (%i)" % (self.src,self.dst, self.nh) 356c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 357c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def post_build(self, p, pay): 35877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil p += pay 359c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.plen is None: 360c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = len(p) - 40 361c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil p = p[:4]+struct.pack("!H", l)+p[6:] 362c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return p 363c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 364c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def extract_padding(self, s): 365c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = self.plen 366c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s[:l], s[l:] 367c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 368c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 369c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.nh == 58 and isinstance(self.payload, _ICMPv6): 370c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.payload.type < 128: 371c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.payload.hashret() 372c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif (self.payload.type in [133,134,135,136,144,145]): 373c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return struct.pack("B", self.nh)+self.payload.hashret() 374c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 37577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil nh = self.nh 37677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil sd = self.dst 37777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil ss = self.src 378c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.nh == 43 and isinstance(self.payload, IPv6ExtHdrRouting): 37977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil # With routing header, the destination is the last 38077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil # address of the IPv6 list if segleft > 0 38177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil nh = self.payload.nh 38277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil try: 38377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil sd = self.addresses[-1] 38477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil except IndexError: 38577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil sd = '::1' 38677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil # TODO: big bug with ICMPv6 error messages as the destination of IPerror6 38777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil # could be anything from the original list ... 38877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil if 1: 38977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil sd = inet_pton(socket.AF_INET6, sd) 39077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil for a in self.addresses: 39177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil a = inet_pton(socket.AF_INET6, a) 39277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil sd = strxor(sd, a) 39377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil sd = inet_ntop(socket.AF_INET6, sd) 394c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 395c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.nh == 44 and isinstance(self.payload, IPv6ExtHdrFragment): 396c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil nh = self.payload.nh 397c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 398c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.nh == 0 and isinstance(self.payload, IPv6ExtHdrHopByHop): 399c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil nh = self.payload.nh 400c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 401c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.nh == 60 and isinstance(self.payload, IPv6ExtHdrDestOpt): 402c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil foundhao = None 403c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil for o in self.payload.options: 404c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if isinstance(o, HAO): 405c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil foundhao = o 406c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if foundhao: 407c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil nh = self.payload.nh # XXX what if another extension follows ? 408c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ss = foundhao.hoa 409c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 410c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if conf.checkIPsrc and conf.checkIPaddr: 411c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil sd = inet_pton(socket.AF_INET6, sd) 412c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ss = inet_pton(socket.AF_INET6, self.src) 413c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return struct.pack("B",nh)+self.payload.hashret() 414c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 415c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return struct.pack("B", nh)+self.payload.hashret() 416c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 417c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self, other): 418c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if not isinstance(other, IPv6): # self is reply, other is request 419c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return False 420c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if conf.checkIPaddr: 421c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ss = inet_pton(socket.AF_INET6, self.src) 422c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil sd = inet_pton(socket.AF_INET6, self.dst) 423c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil os = inet_pton(socket.AF_INET6, other.src) 424c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil od = inet_pton(socket.AF_INET6, other.dst) 42577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil # request was sent to a multicast address (other.dst) 426c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Check reply destination addr matches request source addr (i.e 427c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # sd == os) except when reply is multicasted too 428c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # XXX test mcast scope matching ? 429c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if in6_ismaddr(other.dst): 430c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if in6_ismaddr(self.dst): 431c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if ((od == sd) or 432c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil (in6_isaddrllallnodes(self.dst) and in6_isaddrllallservers(other.dst))): 433c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.answers(other.payload) 434c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return False 435c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if (os == sd): 436c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.answers(other.payload) 437c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return False 438c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif (sd != os): # or ss != od): <- removed for ICMP errors 439c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return False 440c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.nh == 58 and isinstance(self.payload, _ICMPv6) and self.payload.type < 128: 441c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # ICMPv6 Error message -> generated by IPv6 packet 442c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Note : at the moment, we jump the ICMPv6 specific class 443c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # to call answers() method of erroneous packet (over 444c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # initial packet). There can be cases where an ICMPv6 error 445c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # class could implement a specific answers method that perform 446c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # a specific task. Currently, don't see any use ... 447c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.payload.answers(other) 448c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif other.nh == 0 and isinstance(other.payload, IPv6ExtHdrHopByHop): 449c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.answers(other.payload.payload) 450c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif other.nh == 44 and isinstance(other.payload, IPv6ExtHdrFragment): 451c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.answers(other.payload.payload) 452c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif other.nh == 43 and isinstance(other.payload, IPv6ExtHdrRouting): 453c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.answers(other.payload.payload) # Buggy if self.payload is a IPv6ExtHdrRouting 454c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif other.nh == 60 and isinstance(other.payload, IPv6ExtHdrDestOpt): 455c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.payload.answers(other.payload.payload) 456c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif self.nh == 60 and isinstance(self.payload, IPv6ExtHdrDestOpt): # BU in reply to BRR, for instance 457c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.payload.answers(other.payload) 458c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 459c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if (self.nh != other.nh): 460c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return False 461c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.answers(other.payload) 462c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 463614f54fc4b269030ba2934b6c353fb43de886e04Phil 464614f54fc4b269030ba2934b6c353fb43de886e04Philconf.neighbor.register_l3(Ether, IPv6, lambda l2,l3: getmacbyip6(l3.dst)) 465614f54fc4b269030ba2934b6c353fb43de886e04Phil 466c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 467c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass IPerror6(IPv6): 468c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 in ICMPv6" 469c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self, other): 470c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if not isinstance(other, IPv6): 471c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return False 47277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil sd = inet_pton(socket.AF_INET6, self.dst) 47377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil ss = inet_pton(socket.AF_INET6, self.src) 47477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil od = inet_pton(socket.AF_INET6, other.dst) 47577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil os = inet_pton(socket.AF_INET6, other.src) 476c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 47777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil # Make sure that the ICMPv6 error is related to the packet scapy sent 47877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil if isinstance(self.underlayer, _ICMPv6) and self.underlayer.type < 128: 479c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 480c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # find upper layer for self (possible citation) 481c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil selfup = self.payload 482c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while selfup is not None and isinstance(selfup, _IPv6ExtHdr): 483c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil selfup = selfup.payload 484c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 485c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # find upper layer for other (initial packet). Also look for RH 486c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil otherup = other.payload 487c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil request_has_rh = False 488c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while otherup is not None and isinstance(otherup, _IPv6ExtHdr): 489c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if isinstance(otherup, IPv6ExtHdrRouting): 490c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil request_has_rh = True 491c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil otherup = otherup.payload 492c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 49377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil if ((ss == os and sd == od) or # <- Basic case 494c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil (ss == os and request_has_rh)): # <- Request has a RH : 495c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # don't check dst address 496c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 497c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Let's deal with possible MSS Clamping 498c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if (isinstance(selfup, TCP) and 499c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil isinstance(otherup, TCP) and 500c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil selfup.options != otherup.options): # seems clamped 501c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 502c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Save fields modified by MSS clamping 503c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil old_otherup_opts = otherup.options 504c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil old_otherup_cksum = otherup.chksum 505c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil old_otherup_dataofs = otherup.dataofs 506c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil old_selfup_opts = selfup.options 507c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil old_selfup_cksum = selfup.chksum 508c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil old_selfup_dataofs = selfup.dataofs 509c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 510c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Nullify them 511c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil otherup.options = [] 512c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil otherup.chksum = 0 513c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil otherup.dataofs = 0 514c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil selfup.options = [] 515c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil selfup.chksum = 0 516c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil selfup.dataofs = 0 517c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 518c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Test it and save result 519c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s1 = str(selfup) 520c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s2 = str(otherup) 521c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = min(len(s1), len(s2)) 522c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res = s1[:l] == s2[:l] 523c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 524c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # recall saved values 525c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil otherup.options = old_otherup_opts 526c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil otherup.chksum = old_otherup_cksum 527c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil otherup.dataofs = old_otherup_dataofs 528c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil selfup.options = old_selfup_opts 529c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil selfup.chksum = old_selfup_cksum 530c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil selfup.dataofs = old_selfup_dataofs 531c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 532c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return res 533c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 534c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s1 = str(selfup) 535c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s2 = str(otherup) 536c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = min(len(s1), len(s2)) 537c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s1[:l] == s2[:l] 538c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 539c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return False 540c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 541c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def mysummary(self): 542c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return Packet.mysummary(self) 543c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 544c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 545c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 546c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 547c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil### Upper Layer Checksum computation ### 548c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 549c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 550c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 551c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass PseudoIPv6(Packet): # IPv6 Pseudo-header for checksum computation 552c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "Pseudo IPv6 Header" 553c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ IP6Field("src", "::"), 554c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("dst", "::"), 55577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil ShortField("uplen", None), 556c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("zero", 0, 24), 557c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("nh", 0) ] 558c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 559c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef in6_chksum(nh, u, p): 560c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 561c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Performs IPv6 Upper Layer checksum computation. Provided parameters are: 562c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 563c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil - 'nh' : value of upper layer protocol 564c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil - 'u' : upper layer instance (TCP, UDP, ICMPv6*, ). Instance must be 565c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil provided with all under layers (IPv6 and all extension headers, 566c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil for example) 567c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil - 'p' : the payload of the upper layer provided as a string 568c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 569c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Functions operate by filling a pseudo header class instance (PseudoIPv6) 570c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil with 571c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil - Next Header value 572c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil - the address of _final_ destination (if some Routing Header with non 573c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil segleft field is present in underlayer classes, last address is used.) 574c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil - the address of _real_ source (basically the source address of an 575c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IPv6 class instance available in the underlayer or the source address 576c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil in HAO option if some Destination Option header found in underlayer 577c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil includes this option). 578c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil - the length is the length of provided payload string ('p') 579c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 580c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 581c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ph6 = PseudoIPv6() 582c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ph6.nh = nh 583c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil rthdr = 0 584c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil hahdr = 0 585c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil final_dest_addr_found = 0 586c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while u != None and not isinstance(u, IPv6): 58777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil if (isinstance(u, IPv6ExtHdrRouting) and 58877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil u.segleft != 0 and len(u.addresses) != 0 and 589c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil final_dest_addr_found == 0): 59077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil rthdr = u.addresses[-1] 591c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil final_dest_addr_found = 1 59277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil elif (isinstance(u, IPv6ExtHdrDestOpt) and (len(u.options) == 1) and 593c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil isinstance(u.options[0], HAO)): 594c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil hahdr = u.options[0].hoa 59577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil u = u.underlayer 596c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if u is None: 59777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil warning("No IPv6 underlayer to compute checksum. Leaving null.") 59877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return 0 59977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil if hahdr: 60077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil ph6.src = hahdr 601c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 602c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ph6.src = u.src 603c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if rthdr: 60477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil ph6.dst = rthdr 605c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 60677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil ph6.dst = u.dst 607c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ph6.uplen = len(p) 608c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ph6s = str(ph6) 609c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return checksum(ph6s+p) 610c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 611c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 612c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 613c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 614c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil### Extension Headers ### 615c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 616c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 617c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 618c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 619c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Inherited by all extension header classes 620c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _IPv6ExtHdr(_IPv6GuessPayload, Packet): 621c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'Abstract IPV6 Option Header' 622c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil aliastypes = [IPv6, IPerror6] # TODO ... 623c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 624c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 625c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil#################### IPv6 options for Extension Headers ##################### 626c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 627c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil_hbhopts = { 0x00: "Pad1", 628c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0x01: "PadN", 629c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0x04: "Tunnel Encapsulation Limit", 630c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0x05: "Router Alert", 631c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0x06: "Quick-Start", 632c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0xc2: "Jumbo Payload", 633c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0xc9: "Home Address Option" } 634c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 635c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _OTypeField(ByteEnumField): 636c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 637c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Modified BytEnumField that displays information regarding the IPv6 option 638c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil based on its option type value (What should be done by nodes that process 639c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil the option if they do not understand it ...) 640c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 641c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil It is used by Jumbo, Pad1, PadN, RouterAlert, HAO options 642c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 643c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil pol = {0x00: "00: skip", 644c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0x40: "01: discard", 645c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0x80: "10: discard+ICMP", 646c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0xC0: "11: discard+ICMP not mcast"} 647c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 648c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil enroutechange = {0x00: "0: Don't change en-route", 649c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0x20: "1: May change en-route" } 650c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 651c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2repr(self, pkt, x): 652c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s = self.i2s.get(x, repr(x)) 653c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil polstr = self.pol[(x & 0xC0)] 654c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil enroutechangestr = self.enroutechange[(x & 0x20)] 655c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "%s [%s, %s]" % (s, polstr, enroutechangestr) 656c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 657c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass HBHOptUnknown(Packet): # IPv6 Hop-By-Hop Option 658c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "Scapy6 Unknown Option" 659c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [_OTypeField("otype", 0x01, _hbhopts), 660c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("optlen", None, length_of="optdata", fmt="B"), 661c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrLenField("optdata", "", 662c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: pkt.optlen) ] 663c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def alignment_delta(self, curpos): # By default, no alignment requirement 664c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 665c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil As specified in section 4.2 of RFC 2460, every options has 666c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil an alignment requirement ususally expressed xn+y, meaning 667c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil the Option Type must appear at an integer multiple of x octest 668c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil from the start of the header, plus y octet. 669c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 670c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil That function is provided the current position from the 671c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil start of the header and returns required padding length. 672c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 673c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 674c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 675c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass Pad1(Packet): # IPv6 Hop-By-Hop Option 676c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "Pad1" 677c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ _OTypeField("otype", 0x00, _hbhopts) ] 678c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def alignment_delta(self, curpos): # No alignment requirement 679c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 680c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 681c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass PadN(Packet): # IPv6 Hop-By-Hop Option 682c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "PadN" 683c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [_OTypeField("otype", 0x01, _hbhopts), 684c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("optlen", None, length_of="optdata", fmt="B"), 685c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrLenField("optdata", "", 686c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: pkt.optlen)] 687c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def alignment_delta(self, curpos): # No alignment requirement 688c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 689c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 690c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass RouterAlert(Packet): # RFC 2711 - IPv6 Hop-By-Hop Option 691c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "Router Alert" 692c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [_OTypeField("otype", 0x05, _hbhopts), 693c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("optlen", 2), 694c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortEnumField("value", None, 695c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil { 0: "Datagram contains a MLD message", 696c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1: "Datagram contains RSVP message", 697c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "Datagram contains an Active Network message" }) ] 698c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # TODO : Check IANA has not defined new values for value field of RouterAlertOption 699c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # TODO : now that we have that option, we should do something in MLD class that need it 700c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def alignment_delta(self, curpos): # alignment requirement : 2n+0 701c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 2 ; y = 0 702c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil delta = x*((curpos - y + x - 1)/x) + y - curpos 703c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return delta 704c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 705c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass Jumbo(Packet): # IPv6 Hop-By-Hop Option 706c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "Jumbo Payload" 707c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [_OTypeField("otype", 0xC2, _hbhopts), 708c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("optlen", 4), 709c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("jumboplen", None) ] 710c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def alignment_delta(self, curpos): # alignment requirement : 4n+2 711c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 4 ; y = 2 712c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil delta = x*((curpos - y + x - 1)/x) + y - curpos 713c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return delta 714c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 715c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass HAO(Packet): # IPv6 Destination Options Header Option 716c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "Home Address Option" 717c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [_OTypeField("otype", 0xC9, _hbhopts), 718c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("optlen", 16), 719c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("hoa", "::") ] 720c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def alignment_delta(self, curpos): # alignment requirement : 8n+6 721c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 8 ; y = 6 722c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil delta = x*((curpos - y + x - 1)/x) + y - curpos 723c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return delta 724c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 725c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil_hbhoptcls = { 0x00: Pad1, 726c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0x01: PadN, 727c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0x05: RouterAlert, 728c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0xC2: Jumbo, 729c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 0xC9: HAO } 730c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 731c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 732c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil######################## Hop-by-Hop Extension Header ######################## 733c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 734c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _HopByHopOptionsField(PacketListField): 735c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil islist = 1 736c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil holds_packet = 1 737c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, name, default, cls, curpos, count_from=None, length_from=None): 738c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.curpos = curpos 739c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil PacketListField.__init__(self, name, default, cls, count_from=count_from, length_from=length_from) 740c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 741c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2len(self, pkt, i): 742c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = len(self.i2m(pkt, i)) 743c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return l 744c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 745c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2count(self, pkt, i): 746c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if type(i) is list: 747c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return len(i) 748c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 749c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 750c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def getfield(self, pkt, s): 751c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil c = l = None 752c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.length_from is not None: 753c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = self.length_from(pkt) 754c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif self.count_from is not None: 755c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil c = self.count_from(pkt) 756c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 757c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil opt = [] 758c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ret = "" 759c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = s 760c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l is not None: 761c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x,ret = s[:l],s[l:] 762c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while x: 763c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if c is not None: 764c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if c <= 0: 765c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil break 766c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil c -= 1 767c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil o = ord(x[0]) # Option type 768c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cls = self.cls 769c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if _hbhoptcls.has_key(o): 770c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cls = _hbhoptcls[o] 771c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil try: 772c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil op = cls(x) 773c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil except: 774c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil op = self.cls(x) 775c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil opt.append(op) 776c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if isinstance(op.payload, Raw): 777c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = op.payload.load 778c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil del(op.payload) 779c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 780c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = "" 781c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return x+ret,opt 782c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 783c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2m(self, pkt, x): 784c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil autopad = None 785c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil try: 786c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil autopad = getattr(pkt, "autopad") # Hack : 'autopad' phantom field 787c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil except: 788c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil autopad = 1 789c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 790c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if not autopad: 791c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "".join(map(str, x)) 792c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 793c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil curpos = self.curpos 794c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s = "" 795c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil for p in x: 796c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil d = p.alignment_delta(curpos) 797c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil curpos += d 798c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if d == 1: 799c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s += str(Pad1()) 800c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif d != 0: 801c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s += str(PadN(optdata='\x00'*(d-2))) 802c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil pstr = str(p) 803c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil curpos += len(pstr) 804c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s += pstr 805c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 806c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Let's make the class including our option field 807c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # a multiple of 8 octets long 808c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil d = curpos % 8 809c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if d == 0: 810c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s 811c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil d = 8 - d 812c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if d == 1: 813c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s += str(Pad1()) 814c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif d != 0: 815c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s += str(PadN(optdata='\x00'*(d-2))) 816c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 817c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s 818c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 819c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def addfield(self, pkt, s, val): 820c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s+self.i2m(pkt, val) 821c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 822c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _PhantomAutoPadField(ByteField): 823c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def addfield(self, pkt, s, val): 824c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s 825c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 826c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def getfield(self, pkt, s): 827c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s, 1 828c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 829c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2repr(self, pkt, x): 830c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x: 831c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "On" 832c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "Off" 833c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 834c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 835c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass IPv6ExtHdrHopByHop(_IPv6ExtHdr): 836c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Extension Header - Hop-by-Hop Options Header" 837c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 838c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("len", None, length_of="options", fmt="B", 839c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil adjust = lambda pkt,x: (x+2+7)/8 - 1), 840c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _PhantomAutoPadField("autopad", 1), # autopad activated by default 84177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil _HopByHopOptionsField("options", [], HBHOptUnknown, 2, 842c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: (8*(pkt.len+1))-2) ] 843c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 0 }} 844c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 845c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 846c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil######################## Destination Option Header ########################## 847c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 848c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass IPv6ExtHdrDestOpt(_IPv6ExtHdr): 849c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Extension Header - Destination Options Header" 850c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 851c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("len", None, length_of="options", fmt="B", 852c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil adjust = lambda pkt,x: (x+2+7)/8 - 1), 853c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _PhantomAutoPadField("autopad", 1), # autopad activated by default 85477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil _HopByHopOptionsField("options", [], HBHOptUnknown, 2, 855c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: (8*(pkt.len+1))-2) ] 856c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 60 }} 857c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 858c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 859c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################# Routing Header ################################ 860c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 861c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass IPv6ExtHdrRouting(_IPv6ExtHdr): 862c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Option Header Routing" 863c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 864c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("len", None, count_of="addresses", fmt="B", 865c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil adjust = lambda pkt,x:2*x), # in 8 bytes blocks 866c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("type", 0), 867c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("segleft", None), 868c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("reserved", 0, 32), # There is meaning in this field ... 86977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil IP6ListField("addresses", [], 870c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: 8*pkt.len)] 871c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 43 }} 872c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 873c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def post_build(self, pkt, pay): 874c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.segleft is None: 875c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil pkt = pkt[:3]+struct.pack("B", len(self.addresses))+pkt[4:] 876c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return _IPv6ExtHdr.post_build(self, pkt, pay) 877c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 878c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil########################### Fragmentation Header ############################ 879c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 88077132687c31a9d3f30c3992c70eb24d1ac0948a7Philclass IPv6ExtHdrFragment(_IPv6ExtHdr): 881c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Extension Header - Fragmentation header" 882c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 883c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("res1", 0, 8), 88477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil BitField("offset", 0, 13), 88577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil BitField("res2", 0, 2), 88677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil BitField("m", 0, 1), 88777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil IntField("id", None) ] 888c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 44 }} 889c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 890c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 891c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef defragment6(pktlist): 892c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 893c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Performs defragmentation of a list of IPv6 packets. Packets are reordered. 894c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Crap is dropped. What lacks is completed by 'X' characters. 895c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 896c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 897c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = filter(lambda x: IPv6ExtHdrFragment in x, pktlist) # remove non fragments 898c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if not l: 899c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return [] 900c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 901c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil id = l[0][IPv6ExtHdrFragment].id 902c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 903c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil llen = len(l) 904c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = filter(lambda x: x[IPv6ExtHdrFragment].id == id, l) 905c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if len(l) != llen: 906c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil warning("defragment6: some fragmented packets have been removed from list") 907c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil llen = len(l) 908c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 909c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # reorder fragments 910c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil i = 0 911c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res = [] 912c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while l: 913c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil min_pos = 0 914c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil min_offset = l[0][IPv6ExtHdrFragment].offset 915c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil for p in l: 916c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cur_offset = p[IPv6ExtHdrFragment].offset 917c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if cur_offset < min_offset: 918c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil min_pos = 0 919c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil min_offset = cur_offset 920c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res.append(l[min_pos]) 921c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil del(l[min_pos]) 922c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 923c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # regenerate the fragmentable part 924c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragmentable = "" 925c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil for p in res: 926c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil q=p[IPv6ExtHdrFragment] 927c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil offset = 8*q.offset 928c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if offset != len(fragmentable): 929c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil warning("Expected an offset of %d. Found %d. Padding with XXXX" % (len(fragmentable), offset)) 930c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragmentable += "X"*(offset - len(fragmentable)) 931c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragmentable += str(q.payload) 932c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 933c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Regenerate the unfragmentable part. 934c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil q = res[0] 935c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil nh = q[IPv6ExtHdrFragment].nh 936c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil q[IPv6ExtHdrFragment].underlayer.nh = nh 937c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil q[IPv6ExtHdrFragment].underlayer.payload = None 938c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil q /= Raw(load=fragmentable) 939c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 940c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return IPv6(str(q)) 941c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 942c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 943c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef fragment6(pkt, fragSize): 944c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 945c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Performs fragmentation of an IPv6 packet. Provided packet ('pkt') must already 946c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil contain an IPv6ExtHdrFragment() class. 'fragSize' argument is the expected 947c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil maximum size of fragments (MTU). The list of packets is returned. 948c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 949c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil If packet does not contain an IPv6ExtHdrFragment class, it is returned in 950c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil result list. 951c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 952c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 953c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil pkt = pkt.copy() 954c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s = str(pkt) # for instantiation to get upper layer checksum right 955c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 956c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if len(s) <= fragSize: 957c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return [pkt] 958c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 959c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if not IPv6ExtHdrFragment in pkt: 960c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # TODO : automatically add a fragment before upper Layer 961c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # at the moment, we do nothing and return initial packet 962c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # as single element of a list 963c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return [pkt] 964c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 965c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Fragmentable part : fake IPv6 for Fragmentable part length computation 966c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragPart = pkt[IPv6ExtHdrFragment].payload 967c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil tmp = str(IPv6(src="::1", dst="::1")/fragPart) 968c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragPartLen = len(tmp) - 40 # basic IPv6 header length 969c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragPartStr = s[-fragPartLen:] 970c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 971c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Grab Next Header for use in Fragment Header 972c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil nh = IPv6(tmp[:40]).nh 973c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 974c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Keep fragment header 975c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragHeader = pkt[IPv6ExtHdrFragment] 976c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragHeader.payload = None # detach payload 977c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 978c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Unfragmentable Part 979c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil unfragPartLen = len(s) - fragPartLen - 8 980c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil unfragPart = pkt 981c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil pkt[IPv6ExtHdrFragment].underlayer.payload = None # detach payload 982c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 983c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Cut the fragmentable part to fit fragSize. Inner fragments have 984c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # a length that is an integer multiple of 8 octets. last Frag MTU 985c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # can be anything below MTU 986c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil lastFragSize = fragSize - unfragPartLen - 8 987c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil innerFragSize = lastFragSize - (lastFragSize % 8) 988c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 989c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if lastFragSize <= 0 or innerFragSize == 0: 990c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil warning("Provided fragment size value is too low. " + 991c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil "Should be more than %d" % (unfragPartLen + 8)) 992c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return [unfragPart/fragHeader/fragPart] 993c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 994c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil remain = fragPartStr 995c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res = [] 996c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragOffset = 0 # offset, incremeted during creation 997c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragId = random.randint(0,0xffffffff) # random id ... 998c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if fragHeader.id is not None: # ... except id provided by user 999c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragId = fragHeader.id 1000c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragHeader.m = 1 1001c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragHeader.id = fragId 1002c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragHeader.nh = nh 1003c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1004c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Main loop : cut, fit to FRAGSIZEs, fragOffset, Id ... 1005c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while True: 1006c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if (len(remain) > lastFragSize): 1007c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil tmp = remain[:innerFragSize] 1008c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil remain = remain[innerFragSize:] 1009c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragHeader.offset = fragOffset # update offset 1010c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragOffset += (innerFragSize / 8) # compute new one 1011c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if IPv6 in unfragPart: 1012c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil unfragPart[IPv6].plen = None 1013c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil tempo = unfragPart/fragHeader/Raw(load=tmp) 1014c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res.append(tempo) 1015c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 1016c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragHeader.offset = fragOffset # update offSet 1017c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fragHeader.m = 0 1018c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if IPv6 in unfragPart: 1019c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil unfragPart[IPv6].plen = None 1020c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil tempo = unfragPart/fragHeader/Raw(load=remain) 1021c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res.append(tempo) 1022c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil break 1023c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return res 1024c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1025c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1026c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################### AH Header ################################### 1027c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1028c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# class _AHFieldLenField(FieldLenField): 1029c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# def getfield(self, pkt, s): 1030c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# l = getattr(pkt, self.fld) 1031c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# l = (l*8)-self.shift 1032c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# i = self.m2i(pkt, s[:l]) 1033c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# return s[l:],i 1034c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1035c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# class _AHICVStrLenField(StrLenField): 1036c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# def i2len(self, pkt, x): 1037c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1038c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1039c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1040c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# class IPv6ExtHdrAH(_IPv6ExtHdr): 1041c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# name = "IPv6 Extension Header - AH" 1042c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 1043c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# _AHFieldLenField("len", None, "icv"), 1044c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# ShortField("res", 0), 1045c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# IntField("spi", 0), 1046c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# IntField("sn", 0), 1047c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# _AHICVStrLenField("icv", None, "len", shift=2) ] 1048c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# overload_fields = {IPv6: { "nh": 51 }} 1049c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1050c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# def post_build(self, pkt, pay): 1051c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# if self.len is None: 1052c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# pkt = pkt[0]+struct.pack("!B", 2*len(self.addresses))+pkt[2:] 1053c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# if self.segleft is None: 1054c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# pkt = pkt[:3]+struct.pack("!B", len(self.addresses))+pkt[4:] 1055c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# return _IPv6ExtHdr.post_build(self, pkt, pay) 1056c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1057c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1058c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################### ESP Header ################################## 1059c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1060c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# class IPv6ExtHdrESP(_IPv6extHdr): 1061c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# name = "IPv6 Extension Header - ESP" 1062c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# fields_desc = [ IntField("spi", 0), 1063c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# IntField("sn", 0), 1064c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# # there is things to extract from IKE work 1065c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# ] 1066c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# overloads_fields = {IPv6: { "nh": 50 }} 1067c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1068c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1069c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1070c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 1071c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 1072c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil### ICMPv6* Classes ### 1073c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 1074c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 1075c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1076c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilicmp6typescls = { 1: "ICMPv6DestUnreach", 1077c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "ICMPv6PacketTooBig", 1078c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: "ICMPv6TimeExceeded", 1079c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: "ICMPv6ParamProblem", 1080c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 128: "ICMPv6EchoRequest", 1081c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 129: "ICMPv6EchoReply", 1082c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 130: "ICMPv6MLQuery", 1083c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 131: "ICMPv6MLReport", 1084c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 132: "ICMPv6MLDone", 1085c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 133: "ICMPv6ND_RS", 1086c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 134: "ICMPv6ND_RA", 1087c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 135: "ICMPv6ND_NS", 1088c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 136: "ICMPv6ND_NA", 1089c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 137: "ICMPv6ND_Redirect", 1090c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #138: Do Me - RFC 2894 - Seems painful 1091c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 139: "ICMPv6NIQuery", 1092c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 140: "ICMPv6NIReply", 1093c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 141: "ICMPv6ND_INDSol", 1094c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 142: "ICMPv6ND_INDAdv", 1095c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #143: Do Me - RFC 3810 109677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 144: "ICMPv6HAADRequest", 109777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 145: "ICMPv6HAADReply", 109877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 146: "ICMPv6MPSol", 109977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 147: "ICMPv6MPAdv", 1100c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #148: Do Me - SEND related - RFC 3971 1101c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #149: Do Me - SEND related - RFC 3971 1102c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 151: "ICMPv6MRD_Advertisement", 1103c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 152: "ICMPv6MRD_Solicitation", 1104c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 153: "ICMPv6MRD_Termination", 110577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil } 1106c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1107c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilicmp6types = { 1 : "Destination unreachable", 1108c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2 : "Packet too big", 110977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 3 : "Time exceeded", 1110c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4 : "Parameter problem", 1111c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 100 : "Private Experimentation", 1112c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 101 : "Private Experimentation", 1113c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 128 : "Echo Request", 1114c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 129 : "Echo Reply", 1115c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 130 : "MLD Query", 111677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 131 : "MLD Report", 111777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 132 : "MLD Done", 111877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 133 : "Router Solicitation", 111977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 134 : "Router Advertisement", 112077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 135 : "Neighbor Solicitation", 112177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 136 : "Neighbor Advertisement", 112277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 137 : "Redirect Message", 112377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 138 : "Router Renumbering", 112477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 139 : "ICMP Node Information Query", 112577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 140 : "ICMP Node Information Response", 112677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 141 : "Inverse Neighbor Discovery Solicitation Message", 112777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 142 : "Inverse Neighbor Discovery Advertisement Message", 112877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 143 : "Version 2 Multicast Listener Report", 112977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 144 : "Home Agent Address Discovery Request Message", 113077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 145 : "Home Agent Address Discovery Reply Message", 113177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 146 : "Mobile Prefix Solicitation", 113277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 147 : "Mobile Prefix Advertisement", 113377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 148 : "Certification Path Solicitation", 113477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil 149 : "Certification Path Advertisement", 1135c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 151 : "Multicast Router Advertisement", 1136c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 152 : "Multicast Router Solicitation", 1137c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 153 : "Multicast Router Termination", 1138c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 200 : "Private Experimentation", 1139c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 201 : "Private Experimentation" } 1140c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1141c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1142c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _ICMPv6(Packet): 1143c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 dummy class" 1144c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: {"nh": 58}} 1145c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def post_build(self, p, pay): 114677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil p += pay 1147c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.cksum == None: 114877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil chksum = in6_chksum(58, self.underlayer, p) 114977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil p = p[:2]+struct.pack("!H", chksum)+p[4:] 115077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return p 1151c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1152c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 1153c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.hashret() 1154c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1155c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self, other): 1156c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # isinstance(self.underlayer, _IPv6ExtHdr) may introduce a bug ... 115777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil if (isinstance(self.underlayer, IPerror6) or 1158c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil isinstance(self.underlayer, _IPv6ExtHdr) and 1159c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil isinstance(other, _ICMPv6)): 116077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil if not ((self.type == other.type) and 116177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil (self.code == other.code)): 116277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return 0 116377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return 1 116477132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return 0 1165c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1166c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1167c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _ICMPv6Error(_ICMPv6): 1168c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 errors dummy class" 1169c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def guess_payload_class(self,p): 117077132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return IPerror6 1171c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1172c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6Unknown(_ICMPv6): 1173c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "Scapy6 ICMPv6 fallback class" 1174c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type",1, icmp6types), 1175c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code",0), 1176c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1177c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrField("msgbody", "")] 1178c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1179c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1180c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil################################## RFC 2460 ################################# 1181c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1182c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6DestUnreach(_ICMPv6Error): 1183c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Destination Unreachable" 1184c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type",1, icmp6types), 1185c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("code",0, { 0: "No route to destination", 1186c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1: "Communication with destination administratively prohibited", 1187c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "Beyond scope of source address", 1188c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: "Address unreachable", 1189c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: "Port unreachable" }), 1190c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1191c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XIntField("unused",0x00000000)] 1192c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1193c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6PacketTooBig(_ICMPv6Error): 1194c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Packet Too Big" 1195c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type",2, icmp6types), 1196c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code",0), 1197c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1198c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("mtu",1280)] 1199c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1200c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6TimeExceeded(_ICMPv6Error): 1201c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Time Exceeded" 1202c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type",3, icmp6types), 1203c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code",{ 0: "hop limit exceeded in transit", 1204c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1: "fragment reassembly time exceeded"}), 1205c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1206c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XIntField("unused",0x00000000)] 1207c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1208c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# The default pointer value is set to the next header field of 1209c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# the encapsulated IPv6 packet 1210c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6ParamProblem(_ICMPv6Error): 1211c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Parameter Problem" 1212c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type",4, icmp6types), 1213c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("code",0, {0: "erroneous header field encountered", 1214c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1: "unrecognized Next Header type encountered", 1215c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "unrecognized IPv6 option encountered"}), 1216c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1217c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("ptr",6)] 1218c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1219c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6EchoRequest(_ICMPv6): 1220c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Echo Request" 1221c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type", 128, icmp6types), 1222c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code", 0), 1223c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1224c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("id",0), 1225c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("seq",0), 1226c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrField("data", "")] 1227c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def mysummary(self): 1228c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.sprintf("%name% (id: %id% seq: %seq%)") 1229c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 1230c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return struct.pack("HH",self.id,self.seq)+self.payload.hashret() 1231c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1232c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1233c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6EchoReply(ICMPv6EchoRequest): 1234c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Echo Reply" 1235c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil type = 129 1236c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self, other): 1237c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # We could match data content between request and reply. 1238c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return (isinstance(other, ICMPv6EchoRequest) and 1239c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.id == other.id and self.seq == other.seq and 1240c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.data == other.data) 1241c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1242c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1243c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############ ICMPv6 Multicast Listener Discovery (RFC3810) ################## 1244c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1245c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# tous les messages MLD sont emis avec une adresse source lien-locale 1246c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# -> Y veiller dans le post_build si aucune n'est specifiee 1247c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# La valeur de Hop-Limit doit etre de 1 1248c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# "and an IPv6 Router Alert option in a Hop-by-Hop Options 1249c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# header. (The router alert option is necessary to cause routers to 1250c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# examine MLD messages sent to multicast addresses in which the router 1251c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# itself has no interest" 1252c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _ICMPv6ML(_ICMPv6): 1253c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type", 130, icmp6types), 1254c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code", 0), 1255c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1256c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("mrd", 0), 1257c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("reserved", 0), 1258c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("mladdr",None)] 1259c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1260c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# general queries are sent to the link-scope all-nodes multicast 1261c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# address ff02::1, with a multicast address field of 0 and a MRD of 1262c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# [Query Response Interval] 1263c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Default value for mladdr is set to 0 for a General Query, and 1264c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# overloaded by the user for a Multicast Address specific query 1265c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# TODO : See what we can do to automatically include a Router Alert 1266c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Option in a Destination Option Header. 1267c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6MLQuery(_ICMPv6ML): # RFC 2710 1268c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MLD - Multicast Listener Query" 1269c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil type = 130 1270c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil mrd = 10000 1271c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil mladdr = "::" # 10s for mrd 1272c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "dst": "ff02::1", "hlim": 1 }} 1273c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 1274c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.mladdr != "::": 1275c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return struct.pack("HH",self.mladdr)+self.payload.hashret() 1276c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 1277c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.payload.hashret() 1278c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1279c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1280c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# TODO : See what we can do to automatically include a Router Alert 1281c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Option in a Destination Option Header. 1282c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6MLReport(_ICMPv6ML): # RFC 2710 1283c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MLD - Multicast Listener Report" 1284c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil type = 131 1285c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: {"hlim": 1}} 1286c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # implementer le hashret et le answers 1287c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1288c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# When a node ceases to listen to a multicast address on an interface, 1289c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# it SHOULD send a single Done message to the link-scope all-routers 1290c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# multicast address (FF02::2), carrying in its multicast address field 1291c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# the address to which it is ceasing to listen 1292c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# TODO : See what we can do to automatically include a Router Alert 1293c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Option in a Destination Option Header. 1294c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6MLDone(_ICMPv6ML): # RFC 2710 1295c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MLD - Multicast Listener Done" 1296c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil type = 132 1297c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "dst": "ff02::2", "hlim": 1}} 1298c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1299c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1300c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil########## ICMPv6 MRD - Multicast Router Discovery (RFC 4286) ############### 1301c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1302c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# TODO: 1303c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# - 04/09/06 troglocan : find a way to automatically add a router alert 1304c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# option for all MRD packets. This could be done in a specific 1305c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# way when IPv6 is the under layer with some specific keyword 1306c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# like 'exthdr'. This would allow to keep compatibility with 1307c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# providing IPv6 fields to be overloaded in fields_desc. 1308c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# 1309c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# At the moment, if user inserts an IPv6 Router alert option 1310c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# none of the IPv6 default values of IPv6 layer will be set. 1311c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1312c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6MRD_Advertisement(_ICMPv6): 1313c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Multicast Router Discovery Advertisement" 1314c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ByteEnumField("type", 151, icmp6types), 1315c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("advinter", 20), 1316c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1317c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("queryint", 0), 1318c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("robustness", 0)] 1319c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 58, "hlim": 1, "dst": "ff02::2"}} 1320c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # IPv6 Router Alert requires manual inclusion 1321c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def extract_padding(self, s): 1322c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s[:8], s[8:] 1323c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1324c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6MRD_Solicitation(_ICMPv6): 1325c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Multicast Router Discovery Solicitation" 1326c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ByteEnumField("type", 152, icmp6types), 1327c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("res", 0), 1328c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None) ] 1329c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 58, "hlim": 1, "dst": "ff02::2"}} 1330c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # IPv6 Router Alert requires manual inclusion 1331c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def extract_padding(self, s): 1332c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s[:4], s[4:] 1333c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1334c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6MRD_Termination(_ICMPv6): 1335c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Multicast Router Discovery Termination" 1336c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ByteEnumField("type", 153, icmp6types), 1337c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("res", 0), 1338c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None) ] 1339c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 58, "hlim": 1, "dst": "ff02::6A"}} 1340c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # IPv6 Router Alert requires manual inclusion 1341c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def extract_padding(self, s): 1342c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s[:4], s[4:] 1343c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1344c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1345c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil################### ICMPv6 Neighbor Discovery (RFC 2461) #################### 1346c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1347c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilicmp6ndopts = { 1: "Source Link-Layer Address", 1348c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "Target Link-Layer Address", 1349c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: "Prefix Information", 1350c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: "Redirected Header", 1351c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 5: "MTU", 1352c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 6: "NBMA Shortcut Limit Option", # RFC2491 1353c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 7: "Advertisement Interval Option", 1354c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 8: "Home Agent Information Option", 1355c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 9: "Source Address List", 1356c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 10: "Target Address List", 1357c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 11: "CGA Option", # RFC 3971 1358c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 12: "RSA Signature Option", # RFC 3971 1359c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 13: "Timestamp Option", # RFC 3971 1360c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 14: "Nonce option", # RFC 3971 1361c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 15: "Trust Anchor Option", # RFC 3971 1362c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 16: "Certificate Option", # RFC 3971 1363c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 17: "IP Address Option", # RFC 4068 1364c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 18: "New Router Prefix Information Option", # RFC 4068 1365c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 19: "Link-layer Address Option", # RFC 4068 1366c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 20: "Neighbor Advertisement Acknowledgement Option", 1367c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 21: "CARD Request Option", # RFC 4065/4066/4067 1368c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 22: "CARD Reply Option", # RFC 4065/4066/4067 1369c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 23: "MAP Option", # RFC 4140 1370c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 24: "Route Information Option", # RFC 4191 1371c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 25: "Recusive DNS Server Option", 1372c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 26: "IPv6 Router Advertisement Flags Option" 1373c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil } 1374c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1375c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilicmp6ndoptscls = { 1: "ICMPv6NDOptSrcLLAddr", 1376c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "ICMPv6NDOptDstLLAddr", 1377c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: "ICMPv6NDOptPrefixInfo", 1378c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: "ICMPv6NDOptRedirectedHdr", 1379c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 5: "ICMPv6NDOptMTU", 1380c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 6: "ICMPv6NDOptShortcutLimit", 1381c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 7: "ICMPv6NDOptAdvInterval", 1382c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 8: "ICMPv6NDOptHAInfo", 1383c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 9: "ICMPv6NDOptSrcAddrList", 1384c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 10: "ICMPv6NDOptTgtAddrList", 1385c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #11: Do Me, 1386c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #12: Do Me, 1387c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #13: Do Me, 1388c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #14: Do Me, 1389c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #15: Do Me, 1390c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #16: Do Me, 1391c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 17: "ICMPv6NDOptIPAddr", 1392c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 18: "ICMPv6NDOptNewRtrPrefix", 1393c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 19: "ICMPv6NDOptLLA", 1394c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #18: Do Me, 1395c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #19: Do Me, 1396c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #20: Do Me, 1397c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #21: Do Me, 1398c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil #22: Do Me, 1399c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 23: "ICMPv6NDOptMAP", 1400c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 24: "ICMPv6NDOptRouteInfo", 1401c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 25: "ICMPv6NDOptRDNSS", 1402c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 26: "ICMPv6NDOptEFA" 1403c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil } 1404c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1405c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _ICMPv6NDGuessPayload: 1406c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "Dummy ND class that implements guess_payload_class()" 1407c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def guess_payload_class(self,p): 1408c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if len(p) > 1: 1409c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return get_cls(icmp6ndoptscls.get(ord(p[0]),"Raw"), "Raw") # s/Raw/ICMPv6NDOptUnknown/g ? 1410c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1411c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1412c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Beginning of ICMPv6 Neighbor Discovery Options. 1413c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1414c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptUnknown(_ICMPv6NDGuessPayload, Packet): 1415c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery Option - Scapy Unimplemented" 1416c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type",None), 1417c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("len",None,length_of="data",fmt="B", 1418c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil adjust = lambda pkt,x: x+2), 1419c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrLenField("data","", 1420c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: pkt.len-2) ] 1421c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1422c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# NOTE: len includes type and len field. Expressed in unit of 8 bytes 1423c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# TODO: Revoir le coup du ETHER_ANY 1424c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptSrcLLAddr(_ICMPv6NDGuessPayload, Packet): 1425c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery Option - Source Link-Layer Address" 1426c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type", 1), 1427c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", 1), 1428c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil MACField("lladdr", ETHER_ANY) ] 142977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil def mysummary(self): 1430c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.sprintf("%name% %lladdr%") 1431c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1432c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptDstLLAddr(ICMPv6NDOptSrcLLAddr): 1433c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery Option - Destination Link-Layer Address" 1434c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil type = 2 1435c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1436c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptPrefixInfo(_ICMPv6NDGuessPayload, Packet): 1437c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery Option - Prefix Information" 1438c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type",3), 1439c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len",4), 1440c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("prefixlen",None), 1441c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("L",1,1), 1442c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("A",1,1), 1443c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("R",0,1), 1444c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("res1",0,5), 1445c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XIntField("validlifetime",0xffffffffL), 1446c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XIntField("preferredlifetime",0xffffffffL), 1447c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XIntField("res2",0x00000000), 1448c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("prefix","::") ] 144977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil def mysummary(self): 1450c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.sprintf("%name% %prefix%") 1451c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1452c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# TODO: We should also limit the size of included packet to something 1453c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# like (initiallen - 40 - 2) 1454c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass TruncPktLenField(PacketLenField): 1455c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1456c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, name, default, cls, cur_shift, length_from=None, shift=0): 1457c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil PacketLenField.__init__(self, name, default, cls, length_from=length_from) 1458c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.cur_shift = cur_shift 1459c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1460c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def getfield(self, pkt, s): 1461c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = self.length_from(pkt) 1462c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil i = self.m2i(pkt, s[:l]) 1463c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s[l:],i 1464c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1465c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def m2i(self, pkt, m): 1466c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s = None 1467c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil try: # It can happen we have sth shorter than 40 bytes 1468c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s = self.cls(m) 1469c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil except: 1470c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return Raw(m) 1471c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s 1472c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1473c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2m(self, pkt, x): 1474c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s = str(x) 1475c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = len(s) 1476c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil r = (l + self.cur_shift) % 8 1477c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = l - r 1478c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s[:l] 1479c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1480c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2len(self, pkt, i): 1481c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return len(self.i2m(pkt, i)) 1482c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1483c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1484c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Faire un post_build pour le recalcul de la taille (en multiple de 8 octets) 1485c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptRedirectedHdr(_ICMPv6NDGuessPayload, Packet): 1486c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery Option - Redirected Header" 1487c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type",4), 1488c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("len", None, length_of="pkt", fmt="B", 1489c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil adjust = lambda pkt,x:(x+4)/8), 1490b5d49cd73a38b87d2a62a74452d3cb0932e6aa7bJochen Bartl StrFixedLenField("res", "\x00"*6, 6), 1491c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil TruncPktLenField("pkt", "", IPv6, 4, 1492c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: 8*pkt.len-4) ] 1493c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1494c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# See which value should be used for default MTU instead of 1280 1495c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptMTU(_ICMPv6NDGuessPayload, Packet): 1496c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery Option - MTU" 1497c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type",5), 1498c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len",1), 1499c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("res",0), 1500c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("mtu",1280)] 1501c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1502c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptShortcutLimit(_ICMPv6NDGuessPayload, Packet): # RFC 2491 1503c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery Option - NBMA Shortcut Limit" 1504c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type", 6), 1505c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", 1), 1506c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("shortcutlim", 40), # XXX 1507c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("res1", 0), 1508c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("res2", 0) ] 1509c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1510c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptAdvInterval(_ICMPv6NDGuessPayload, Packet): 1511c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery - Interval Advertisement" 1512c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type",7), 1513c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len",1), 1514c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("res", 0), 1515c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("advint", 0) ] 151677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil def mysummary(self): 1517c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.sprintf("%name% %advint% milliseconds") 1518c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 151977132687c31a9d3f30c3992c70eb24d1ac0948a7Philclass ICMPv6NDOptHAInfo(_ICMPv6NDGuessPayload, Packet): 1520c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery - Home Agent Information" 1521c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type",8), 1522c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len",1), 1523c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("res", 0), 1524c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("pref", 0), 1525c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("lifetime", 1)] 152677132687c31a9d3f30c3992c70eb24d1ac0948a7Phil def mysummary(self): 1527c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.sprintf("%name% %pref% %lifetime% seconds") 1528c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1529c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# type 9 : See ICMPv6NDOptSrcAddrList class below in IND (RFC 3122) support 1530c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1531c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# type 10 : See ICMPv6NDOptTgtAddrList class below in IND (RFC 3122) support 1532c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 153377132687c31a9d3f30c3992c70eb24d1ac0948a7Philclass ICMPv6NDOptIPAddr(_ICMPv6NDGuessPayload, Packet): # RFC 4068 1534c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery - IP Address Option (FH for MIPv6)" 1535c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type",17), 1536c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", 3), 1537c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("optcode", 1, {1: "Old Care-Of Address", 1538c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "New Care-Of Address", 1539c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: "NAR's IP address" }), 1540c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("plen", 64), 1541c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("res", 0), 1542c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("addr", "::") ] 1543c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1544c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptNewRtrPrefix(_ICMPv6NDGuessPayload, Packet): # RFC 4068 1545c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery - New Router Prefix Information Option (FH for MIPv6)" 1546c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type",18), 1547c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", 3), 1548c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("optcode", 0), 1549c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("plen", 64), 1550c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("res", 0), 1551c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("prefix", "::") ] 1552c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1553c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil_rfc4068_lla_optcode = {0: "Wildcard requesting resolution for all nearby AP", 1554c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1: "LLA for the new AP", 1555c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "LLA of the MN", 1556c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: "LLA of the NAR", 1557c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: "LLA of the src of TrSolPr or PrRtAdv msg", 1558c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 5: "AP identified by LLA belongs to current iface of router", 1559c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 6: "No preifx info available for AP identified by the LLA", 1560c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 7: "No fast handovers support for AP identified by the LLA" } 1561c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 156277132687c31a9d3f30c3992c70eb24d1ac0948a7Philclass ICMPv6NDOptLLA(_ICMPv6NDGuessPayload, Packet): # RFC 4068 1563c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery - Link-Layer Address (LLA) Option (FH for MIPv6)" 1564c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type", 19), 1565c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", 1), 1566c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("optcode", 0, _rfc4068_lla_optcode), 1567c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil MACField("lla", ETHER_ANY) ] # We only support ethernet 1568c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 156977132687c31a9d3f30c3992c70eb24d1ac0948a7Philclass ICMPv6NDOptMAP(_ICMPv6NDGuessPayload, Packet): # RFC 4140 1570c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery - MAP Option" 1571c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type", 23), 1572c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", 3), 1573c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("dist", 1, 4), 1574c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("pref", 15, 4), # highest availability 1575c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("R", 1, 1), 1576c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("res", 0, 7), 1577c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("validlifetime", 0xffffffff), 1578c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("addr", "::") ] 1579c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1580c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1581c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass IP6PrefixField(IP6Field): 1582c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, name, default): 1583c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field.__init__(self, name, default) 1584c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.length_from = lambda pkt: 8*(pkt.len - 1) 1585c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1586c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def addfield(self, pkt, s, val): 1587c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s + self.i2m(pkt, val) 1588c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1589c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def getfield(self, pkt, s): 1590c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = self.length_from(pkt) 1591c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil p = s[:l] 1592c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l < 16: 1593c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil p += '\x00'*(16-l) 1594c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s[l:], self.m2i(pkt,p) 1595c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1596c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2len(self, pkt, x): 1597c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return len(self.i2m(pkt, x)) 1598c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1599c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2m(self, pkt, x): 1600c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = pkt.len 1601c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1602c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x is None: 1603c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = "::" 1604c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l is None: 1605c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = 1 1606c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = inet_pton(socket.AF_INET6, x) 1607c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1608c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l is None: 1609c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return x 1610c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l in [0, 1]: 1611c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "" 1612c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l in [2, 3]: 1613c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return x[:8*(l-1)] 1614c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1615c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return x + '\x00'*8*(l-3) 1616c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1617c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptRouteInfo(_ICMPv6NDGuessPayload, Packet): # RFC 4191 1618c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery Option - Route Information Option" 1619c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type",24), 1620c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("len", None, length_of="prefix", fmt="B", 1621c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil adjust = lambda pkt,x: x/8 + 1), 1622c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("plen", None), 1623c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("res1",0,3), 1624c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("prf",0,2), 1625c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("res2",0,3), 1626c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("rtlifetime", 0xffffffff), 1627c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6PrefixField("prefix", None) ] 1628c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1629c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptRDNSS(_ICMPv6NDGuessPayload, Packet): # RFC 5006 1630c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery Option - Recursive DNS Server Option" 1631c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type", 25), 1632c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("len", None, count_of="dns", fmt="B", 1633c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil adjust = lambda pkt,x: 2*x+1), 1634c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("res", None), 1635c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("lifetime", 0xffffffff), 1636c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6ListField("dns", [], 1637c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: 8*(pkt.len-1)) ] 1638c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1639c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptEFA(_ICMPv6NDGuessPayload, Packet): # RFC 5175 (prev. 5075) 1640c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery Option - Expanded Flags Option" 1641c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type", 26), 1642c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", 1), 1643c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("res", 0, 48) ] 1644c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1645c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# End of ICMPv6 Neighbor Discovery Options. 1646c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1647c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6ND_RS(_ICMPv6NDGuessPayload, _ICMPv6): 1648c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery - Router Solicitation" 1649c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type", 133, icmp6types), 1650c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code",0), 1651c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1652c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("res",0) ] 1653c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 58, "dst": "ff02::2", "hlim": 255 }} 1654c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1655c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6ND_RA(_ICMPv6NDGuessPayload, _ICMPv6): 1656c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery - Router Advertisement" 1657c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type", 134, icmp6types), 1658c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code",0), 1659c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1660c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("chlim",0), 1661c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("M",0,1), 1662c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("O",0,1), 1663c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("H",0,1), 1664c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitEnumField("prf",1,2, { 0: "Medium (default)", 1665c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1: "High", 1666c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "Reserved", 1667c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: "Low" } ), # RFC 4191 1668c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("P",0,1), 1669c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("res",0,2), 1670c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("routerlifetime",1800), 1671c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("reachabletime",0), 1672c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("retranstimer",0) ] 1673c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 58, "dst": "ff02::1", "hlim": 255 }} 1674c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1675c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self, other): 1676c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return isinstance(other, ICMPv6ND_RS) 1677c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1678c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6ND_NS(_ICMPv6NDGuessPayload, _ICMPv6, Packet): 1679c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery - Neighbor Solicitation" 1680c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type",135, icmp6types), 1681c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code",0), 1682c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1683c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("R",0,1), 1684c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("S",0,1), 1685c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField("O",0,1), 1686c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XBitField("res",0,29), 1687c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("tgt","::") ] 1688c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 58, "dst": "ff02::1", "hlim": 255 }} 1689c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1690c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def mysummary(self): 1691c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.sprintf("%name% (tgt: %tgt%)") 1692c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1693c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 1694c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.tgt+self.payload.hashret() 1695c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1696c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6ND_NA(ICMPv6ND_NS): 1697c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery - Neighbor Advertisement" 1698c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil type = 136 1699c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil R = 1 1700c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil O = 1 1701c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1702c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self, other): 170377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil return isinstance(other, ICMPv6ND_NS) and self.tgt == other.tgt 1704c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1705c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# associated possible options : target link-layer option, Redirected header 1706c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6ND_Redirect(_ICMPv6NDGuessPayload, _ICMPv6, Packet): 1707c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Neighbor Discovery - Redirect" 1708c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type",137, icmp6types), 1709c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code",0), 1710c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 1711c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XIntField("res",0), 1712c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("tgt","::"), 1713c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("dst","::") ] 1714c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 58, "dst": "ff02::1", "hlim": 255 }} 1715c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1716c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1717c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1718c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil################ ICMPv6 Inverse Neighbor Discovery (RFC 3122) ############### 1719c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1720c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptSrcAddrList(_ICMPv6NDGuessPayload, Packet): 1721c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Inverse Neighbor Discovery Option - Source Address List" 1722c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteField("type",9), 1723c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("len", None, count_of="addrlist", fmt="B", 1724c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil adjust = lambda pkt,x: 2*x+1), 1725c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrFixedLenField("res", "\x00"*6, 6), 1726c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6ListField("addrlist", [], 1727c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: 8*(pkt.len-1)) ] 1728c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1729c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NDOptTgtAddrList(ICMPv6NDOptSrcAddrList): 1730c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Inverse Neighbor Discovery Option - Target Address List" 1731c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil type = 10 1732c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1733c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1734c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# RFC3122 1735c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Options requises : source lladdr et target lladdr 1736c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Autres options valides : source address list, MTU 1737c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# - Comme precise dans le document, il serait bien de prendre l'adresse L2 1738c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# demandee dans l'option requise target lladdr et l'utiliser au niveau 1739c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# de l'adresse destination ethernet si aucune adresse n'est precisee 1740c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# - ca semble pas forcement pratique si l'utilisateur doit preciser toutes 1741c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# les options. 1742c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Ether() must use the target lladdr as destination 1743c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6ND_INDSol(_ICMPv6NDGuessPayload, _ICMPv6): 1744c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Inverse Neighbor Discovery Solicitation" 1745c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type",141, icmp6types), 1746c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code",0), 1747c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum",None), 1748c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XIntField("reserved",0) ] 1749c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 58, "dst": "ff02::1", "hlim": 255 }} 1750c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1751c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Options requises : target lladdr, target address list 1752c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Autres options valides : MTU 1753c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6ND_INDAdv(_ICMPv6NDGuessPayload, _ICMPv6): 1754c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Inverse Neighbor Discovery Advertisement" 1755c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type",142, icmp6types), 1756c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code",0), 1757c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum",None), 1758c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XIntField("reserved",0) ] 1759c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = {IPv6: { "nh": 58, "dst": "ff02::1", "hlim": 255 }} 1760c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1761c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1762c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################### 1763c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# ICMPv6 Node Information Queries (RFC 4620) 1764c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################### 1765c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1766c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# [ ] Add automatic destination address computation using computeNIGroupAddr 1767c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# in IPv6 class (Scapy6 modification when integrated) if : 1768c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# - it is not provided 1769c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# - upper layer is ICMPv6NIQueryName() with a valid value 1770c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# [ ] Try to be liberal in what we accept as internal values for _explicit_ 1771c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# DNS elements provided by users. Any string should be considered 1772c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# valid and kept like it has been provided. At the moment, i2repr() will 1773c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# crash on many inputs 1774c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# [ ] Do the documentation 1775c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# [ ] Add regression tests 1776c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# [ ] Perform test against real machines (NOOP reply is proof of implementation). 1777c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# [ ] Check if there are differences between different stacks. Among *BSD, 1778c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# with others. 1779c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# [ ] Deal with flags in a consistent way. 1780c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# [ ] Implement compression in names2dnsrepr() and decompresiion in 1781c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# dnsrepr2names(). Should be deactivable. 1782c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1783c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilicmp6_niqtypes = { 0: "NOOP", 1784c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "Node Name", 1785c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: "IPv6 Address", 1786c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: "IPv4 Address" } 1787c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1788c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1789c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _ICMPv6NIHashret: 1790c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 1791c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.nonce 1792c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1793c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _ICMPv6NIAnswers: 1794c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self, other): 1795c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.nonce == other.nonce 1796c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1797c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Buggy; always returns the same value during a session 1798c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass NonceField(StrFixedLenField): 1799c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, name, default=None): 1800c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrFixedLenField.__init__(self, name, default, 8) 1801c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if default is None: 1802c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.default = self.randval() 1803c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1804c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Compute the NI group Address. Can take a FQDN as input parameter 1805c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef computeNIGroupAddr(name): 1806c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil import md5 1807c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = name.lower().split(".")[0] 1808c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil record = chr(len(name))+name 1809c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil h = md5.new(record) 1810c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil h = h.digest() 1811c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil addr = "ff02::2:%2x%2x:%2x%2x" % struct.unpack("BBBB", h[:4]) 1812c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return addr 1813c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1814c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1815c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Here is the deal. First, that protocol is a piece of shit. Then, we 1816c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# provide 4 classes for the different kinds of Requests (one for every 1817c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# valid qtype: NOOP, Node Name, IPv6@, IPv4@). They all share the same 1818c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# data field class that is made to be smart by guessing the specifc 1819c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# type of value provided : 1820c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# 1821c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# - IPv6 if acceptable for inet_pton(AF_INET6, ): code is set to 0, 1822c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# if not overriden by user 1823c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# - IPv4 if acceptable for inet_pton(AF_INET, ): code is set to 2, 1824c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# if not overriden 1825c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# - Name in the other cases: code is set to 0, if not overriden by user 1826c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# 1827c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Internal storage, is not only the value, but the a pair providing 1828c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# the type and the value (1 is IPv6@, 1 is Name or string, 2 is IPv4@) 1829c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# 1830c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Note : I merged getfield() and m2i(). m2i() should not be called 1831c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# directly anyway. Same remark for addfield() and i2m() 1832c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# 1833c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# -- arno 1834c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1835c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# "The type of information present in the Data field of a query is 1836c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# declared by the ICMP Code, whereas the type of information in a 1837c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Reply is determined by the Qtype" 1838c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1839c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef names2dnsrepr(x): 1840c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 1841c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Take as input a list of DNS names or a single DNS name 1842c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil and encode it in DNS format (with possible compression) 1843c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil If a string that is already a DNS name in DNS format 1844c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil is passed, it is returned unmodified. Result is a string. 1845c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil !!! At the moment, compression is not implemented !!! 1846c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 1847c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1848c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if type(x) is str: 1849c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x and x[-1] == '\x00': # stupid heuristic 1850c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return x 1851c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = [x] 1852c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1853c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res = [] 1854c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil for n in x: 1855c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil termin = "\x00" 1856c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if n.count('.') == 0: # single-component gets one more 1857c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil termin += '\x00' 1858c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil n = "".join(map(lambda y: chr(len(y))+y, n.split("."))) + termin 1859c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res.append(n) 1860c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "".join(res) 1861c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1862c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1863c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef dnsrepr2names(x): 1864c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 1865c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Take as input a DNS encoded string (possibly compressed) 1866c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil and returns a list of DNS names contained in it. 1867c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil If provided string is already in printable format 1868c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil (does not end with a null character, a one element list 1869c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil is returned). Result is a list. 1870c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 1871c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res = [] 1872c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cur = "" 1873c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while x: 1874c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = ord(x[0]) 1875c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = x[1:] 1876c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l == 0: 1877c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if cur and cur[-1] == '.': 1878c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cur = cur[:-1] 1879c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res.append(cur) 1880c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cur = "" 1881c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x and ord(x[0]) == 0: # single component 1882c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = x[1:] 1883c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil continue 1884c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l & 0xc0: # XXX TODO : work on that -- arno 1885c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil raise Exception("DNS message can't be compressed at this point!") 1886c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 1887c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cur += x[:l]+"." 1888c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = x[l:] 1889c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return res 1890c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1891c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1892c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass NIQueryDataField(StrField): 1893c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, name, default): 1894c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrField.__init__(self, name, default) 1895c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1896c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2h(self, pkt, x): 1897c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x is None: 1898c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return x 1899c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil t,val = x 1900c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if t == 1: 1901c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil val = dnsrepr2names(val)[0] 1902c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return val 1903c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1904c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def h2i(self, pkt, x): 1905c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x is tuple and type(x[0]) is int: 1906c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return x 1907c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1908c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil val = None 1909c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil try: # Try IPv6 1910c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil inet_pton(socket.AF_INET6, x) 1911c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil val = (0, x) 1912c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil except: 1913c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil try: # Try IPv4 1914c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil inet_pton(socket.AF_INET, x) 1915c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil val = (2, x) 1916c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil except: # Try DNS 1917c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x is None: 1918c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = "" 1919c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = names2dnsrepr(x) 1920c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil val = (1, x) 1921c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return val 1922c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1923c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2repr(self, pkt, x): 1924c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil t,val = x 1925c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if t == 1: # DNS Name 1926c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # we don't use dnsrepr2names() to deal with 1927c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # possible weird data extracted info 1928c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res = [] 1929c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil weird = None 1930c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while val: 1931c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = ord(val[0]) 1932c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil val = val[1:] 1933c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l == 0: 1934c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if (len(res) > 1 and val): # fqdn with data behind 1935c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil weird = val 1936c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif len(val) > 1: # single label with data behind 1937c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil weird = val[1:] 1938c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil break 1939c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res.append(val[:l]+".") 1940c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil val = val[l:] 1941c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil tmp = "".join(res) 1942c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if tmp and tmp[-1] == '.': 1943c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil tmp = tmp[:-1] 1944c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return tmp 1945c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return repr(val) 1946c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1947c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def getfield(self, pkt, s): 1948c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype = getattr(pkt, "qtype") 1949c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if qtype == 0: # NOOP 1950c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s, (0, "") 1951c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 1952c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil code = getattr(pkt, "code") 1953c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if code == 0: # IPv6 Addr 1954c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s[16:], (0, inet_ntop(socket.AF_INET6, s[:16])) 1955c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif code == 2: # IPv4 Addr 1956c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s[4:], (2, inet_ntop(socket.AF_INET, s[:4])) 1957c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: # Name or Unknown 1958c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "", (1, s) 1959c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1960c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def addfield(self, pkt, s, val): 1961c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if ((type(val) is tuple and val[1] is None) or 1962c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil val is None): 1963c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil val = (1, "") 1964c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil t = val[0] 1965c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if t == 1: 1966c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s + val[1] 1967c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif t == 0: 1968c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s + inet_pton(socket.AF_INET6, val[1]) 1969c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 1970c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s + inet_pton(socket.AF_INET, val[1]) 1971c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1972c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass NIQueryCodeField(ByteEnumField): 1973c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2m(self, pkt, x): 1974c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x is None: 1975c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil d = pkt.getfieldval("data") 1976c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if d is None: 1977c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 1 1978c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif d[0] == 0: # IPv6 address 1979c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 1980c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif d[0] == 1: # Name 1981c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 1 1982c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif d[0] == 2: # IPv4 address 1983c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 2 1984c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 1985c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 1 1986c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return x 1987c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1988c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1989c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil_niquery_code = {0: "IPv6 Query", 1: "Name Query", 2: "IPv4 Query"} 1990c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1991c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil#_niquery_flags = { 2: "All unicast addresses", 4: "IPv4 addresses", 199277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil# 8: "Link-local addresses", 16: "Site-local addresses", 1993c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# 32: "Global addresses" } 1994c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1995c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# "This NI type has no defined flags and never has a Data Field". Used 1996c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# to know if the destination is up and implements NI protocol. 1997c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NIQueryNOOP(_ICMPv6NIHashret, _ICMPv6): 1998c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Node Information Query - NOOP Query" 1999c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type", 139, icmp6types), 2000c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil NIQueryCodeField("code", None, _niquery_code), 2001c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2002c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortEnumField("qtype", 0, icmp6_niqtypes), 200377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil BitField("unused", 0, 10), 2004c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FlagsField("flags", 0, 6, "TACLSG"), 200577132687c31a9d3f30c3992c70eb24d1ac0948a7Phil NonceField("nonce", None), 2006c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil NIQueryDataField("data", None) ] 2007c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2008c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NIQueryName(ICMPv6NIQueryNOOP): 2009c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Node Information Query - IPv6 Name Query" 2010c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype = 2 2011c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2012c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# We ask for the IPv6 address of the peer 2013c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NIQueryIPv6(ICMPv6NIQueryNOOP): 2014c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Node Information Query - IPv6 Address Query" 2015c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype = 3 2016c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil flags = 0x3E 2017c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2018c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NIQueryIPv4(ICMPv6NIQueryNOOP): 2019c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Node Information Query - IPv4 Address Query" 2020c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype = 4 2021c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2022c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil_nireply_code = { 0: "Successful Reply", 2023c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1: "Response Refusal", 2024c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: "Unknown query type" } 2025c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2026c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil_nireply_flags = { 1: "Reply set incomplete", 2027c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "All unicast addresses", 2028c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: "IPv4 addresses", 2029c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 8: "Link-local addresses", 2030c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 16: "Site-local addresses", 2031c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 32: "Global addresses" } 2032c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2033c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Internal repr is one of those : 2034c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# (0, "some string") : unknow qtype value are mapped to that one 2035c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# (3, [ (ttl, ip6), ... ]) 2036c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# (4, [ (ttl, ip4), ... ]) 2037c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# (2, [ttl, dns_names]) : dns_names is one string that contains 2038c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# all the DNS names. Internally it is kept ready to be sent 2039c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# (undissected). i2repr() decode it for user. This is to 2040c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# make build after dissection bijective. 2041c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# 2042c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# I also merged getfield() and m2i(), and addfield() and i2m(). 2043c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass NIReplyDataField(StrField): 2044c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2045c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2h(self, pkt, x): 2046c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x is None: 2047c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return x 2048c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil t,val = x 2049c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if t == 2: 2050c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ttl, dnsnames = val 2051c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil val = [ttl] + dnsrepr2names(dnsnames) 2052c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return val 2053c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2054c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def h2i(self, pkt, x): 2055c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype = 0 # We will decode it as string if not 2056c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # overridden through 'qtype' in pkt 2057c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2058c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # No user hint, let's use 'qtype' value for that purpose 2059c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if type(x) is not tuple: 2060c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if pkt is not None: 2061c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype = getattr(pkt, "qtype") 2062c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 2063c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype = x[0] 2064c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = x[1] 2065c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2066c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # From that point on, x is the value (second element of the tuple) 2067c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2068c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if qtype == 2: # DNS name 2069c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if type(x) is str: # listify the string 2070c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = [x] 2071c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if type(x) is list and x and type(x[0]) is not int: # ttl was omitted : use 0 2072c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = [0] + x 2073c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ttl = x[0] 2074c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil names = x[1:] 2075c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return (2, [ttl, names2dnsrepr(names)]) 2076c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2077c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif qtype in [3, 4]: # IPv4 or IPv6 addr 2078c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if type(x) is str: 2079c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = [x] # User directly provided an IP, instead of list 2080c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2081c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # List elements are not tuples, user probably 2082c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # omitted ttl value : we will use 0 instead 2083c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def addttl(x): 2084c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if type(x) is str: 2085c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return (0, x) 2086c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return x 2087c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2088c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return (qtype, map(addttl, x)) 2089c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2090c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return (qtype, x) 2091c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2092c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2093c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def addfield(self, pkt, s, val): 2094c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil t,tmp = val 2095c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if tmp is None: 2096c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil tmp = "" 2097c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if t == 2: 2098c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ttl,dnsstr = tmp 2099c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s+ struct.pack("!I", ttl) + dnsstr 2100c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif t == 3: 2101c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s + "".join(map(lambda (x,y): struct.pack("!I", x)+inet_pton(socket.AF_INET6, y), tmp)) 2102c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif t == 4: 2103c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s + "".join(map(lambda (x,y): struct.pack("!I", x)+inet_pton(socket.AF_INET, y), tmp)) 2104c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 2105c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s + tmp 2106c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2107c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def getfield(self, pkt, s): 2108c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil code = getattr(pkt, "code") 2109c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if code != 0: 2110c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s, (0, "") 2111c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2112c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype = getattr(pkt, "qtype") 2113c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if qtype == 0: # NOOP 2114c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s, (0, "") 2115c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2116c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif qtype == 2: 2117c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if len(s) < 4: 2118c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s, (0, "") 2119c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ttl = struct.unpack("!I", s[:4])[0] 2120c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "", (2, [ttl, s[4:]]) 2121c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2122c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif qtype == 3: # IPv6 addresses with TTLs 2123c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # XXX TODO : get the real length 2124c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res = [] 2125c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while len(s) >= 20: # 4 + 16 2126c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ttl = struct.unpack("!I", s[:4])[0] 2127c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ip = inet_ntop(socket.AF_INET6, s[4:20]) 2128c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res.append((ttl, ip)) 2129c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s = s[20:] 2130c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s, (3, res) 2131c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2132c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif qtype == 4: # IPv4 addresses with TTLs 2133c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # XXX TODO : get the real length 2134c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res = [] 2135c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while len(s) >= 8: # 4 + 4 2136c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ttl = struct.unpack("!I", s[:4])[0] 2137c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ip = inet_ntop(socket.AF_INET, s[4:8]) 2138c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res.append((ttl, ip)) 2139c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s = s[8:] 2140c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s, (4, res) 2141c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 2142c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # XXX TODO : implement me and deal with real length 2143c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "", (0, s) 2144c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2145c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2repr(self, pkt, x): 2146c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x is None: 2147c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "[]" 2148c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2149c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if type(x) is tuple and len(x) == 2: 2150c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil t, val = x 2151c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if t == 2: # DNS names 2152c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ttl,l = val 2153c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = dnsrepr2names(l) 2154c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "ttl:%d %s" % (ttl, ", ".join(l)) 2155c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif t == 3 or t == 4: 2156c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "[ %s ]" % (", ".join(map(lambda (x,y): "(%d, %s)" % (x, y), val))) 2157c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return repr(val) 2158c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return repr(x) # XXX should not happen 2159c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2160c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# By default, sent responses have code set to 0 (successful) 2161c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NIReplyNOOP(_ICMPv6NIAnswers, _ICMPv6NIHashret, _ICMPv6): 2162c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Node Information Reply - NOOP Reply" 2163c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type", 140, icmp6types), 2164c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("code", 0, _nireply_code), 2165c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2166c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortEnumField("qtype", 0, icmp6_niqtypes), 216777132687c31a9d3f30c3992c70eb24d1ac0948a7Phil BitField("unused", 0, 10), 2168c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FlagsField("flags", 0, 6, "TACLSG"), 216977132687c31a9d3f30c3992c70eb24d1ac0948a7Phil NonceField("nonce", None), 2170c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil NIReplyDataField("data", None)] 2171c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2172c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NIReplyName(ICMPv6NIReplyNOOP): 2173c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Node Information Reply - Node Names" 2174c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype = 2 2175c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2176c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NIReplyIPv6(ICMPv6NIReplyNOOP): 2177c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Node Information Reply - IPv6 addresses" 2178c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype = 3 2179c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2180c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NIReplyIPv4(ICMPv6NIReplyNOOP): 2181c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Node Information Reply - IPv4 addresses" 2182c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype = 4 2183c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2184c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NIReplyRefuse(ICMPv6NIReplyNOOP): 2185c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Node Information Reply - Responder refuses to supply answer" 2186c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil code = 1 2187c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2188c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6NIReplyUnknown(ICMPv6NIReplyNOOP): 2189c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "ICMPv6 Node Information Reply - Qtype unknown to the responder" 2190c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil code = 2 2191c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2192c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2193c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef _niquery_guesser(p): 2194c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cls = Raw 2195c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil type = ord(p[0]) 2196c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if type == 139: # Node Info Query specific stuff 2197c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if len(p) > 6: 2198c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype, = struct.unpack("!H", p[4:6]) 2199c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cls = { 0: ICMPv6NIQueryNOOP, 2200c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: ICMPv6NIQueryName, 2201c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: ICMPv6NIQueryIPv6, 2202c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: ICMPv6NIQueryIPv4 }.get(qtype, Raw) 2203c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif type == 140: # Node Info Reply specific stuff 2204c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil code = ord(p[1]) 2205c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if code == 0: 2206c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if len(p) > 6: 2207c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil qtype, = struct.unpack("!H", p[4:6]) 2208c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cls = { 2: ICMPv6NIReplyName, 2209c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: ICMPv6NIReplyIPv6, 2210c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: ICMPv6NIReplyIPv4 }.get(qtype, ICMPv6NIReplyNOOP) 2211c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif code == 1: 2212c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cls = ICMPv6NIReplyRefuse 2213c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif code == 2: 2214c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cls = ICMPv6NIReplyUnknown 2215c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return cls 2216c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2217c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2218c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2219c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2220c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil### Mobile IPv6 (RFC 3775) and Nemo (RFC 3963) ### 2221c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2222c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2223c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2224c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Mobile IPv6 ICMPv6 related classes 2225c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2226c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6HAADRequest(_ICMPv6): 2227c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'ICMPv6 Home Agent Address Discovery Request' 2228c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type", 144, icmp6types), 2229c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code", 0), 2230c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2231c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("id", None), 2232c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitEnumField("R", 1, 1, {1: 'MR'}), 2233c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XBitField("res", 0, 15) ] 2234c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 2235c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return struct.pack("!H",self.id)+self.payload.hashret() 2236c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2237c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6HAADReply(_ICMPv6): 2238c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'ICMPv6 Home Agent Address Discovery Reply' 2239c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type", 145, icmp6types), 2240c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code", 0), 2241c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2242c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("id", None), 2243c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitEnumField("R", 1, 1, {1: 'MR'}), 2244c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XBitField("res", 0, 15), 2245c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6ListField('addresses', None) ] 2246c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 2247c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return struct.pack("!H",self.id)+self.payload.hashret() 2248c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2249c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self, other): 2250c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if not isinstance(other, ICMPv6HAADRequest): 2251c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 2252c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.id == other.id 2253c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2254c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6MPSol(_ICMPv6): 2255c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'ICMPv6 Mobile Prefix Solicitation' 2256c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type", 146, icmp6types), 2257c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code", 0), 2258c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2259c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("id", None), 2260c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("res", 0) ] 2261c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def _hashret(self): 2262c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return struct.pack("!H",self.id) 2263c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2264c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass ICMPv6MPAdv(_ICMPv6NDGuessPayload, _ICMPv6): 2265c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'ICMPv6 Mobile Prefix Advertisement' 2266c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("type", 147, icmp6types), 2267c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("code", 0), 2268c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2269c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("id", None), 2270c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitEnumField("flags", 2, 2, {2: 'M', 1:'O'}), 2271c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XBitField("res", 0, 14) ] 2272c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 2273c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return struct.pack("!H",self.id) 2274c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2275c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self, other): 2276c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return isinstance(other, ICMPv6MPSol) 2277c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2278c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Mobile IPv6 Options classes 2279c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2280c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2281c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil_mobopttypes = { 2: "Binding Refresh Advice", 2282c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: "Alternate Care-of Address", 2283c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: "Nonce Indices", 2284c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 5: "Binding Authorization Data", 2285c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 6: "Mobile Network Prefix (RFC3963)", 2286c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 7: "Link-Layer Address (RFC4068)", 2287c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 8: "Mobile Node Identifier (RFC4283)", 2288c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 9: "Mobility Message Authentication (RFC4285)", 2289c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 10: "Replay Protection (RFC4285)", 2290c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 11: "CGA Parameters Request (RFC4866)", 2291c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 12: "CGA Parameters (RFC4866)", 2292c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 13: "Signature (RFC4866)", 2293c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 14: "Home Keygen Token (RFC4866)", 2294c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 15: "Care-of Test Init (RFC4866)", 2295c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 16: "Care-of Test (RFC4866)" } 2296c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2297c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2298c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _MIP6OptAlign: 2299c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ Mobile IPv6 options have alignment requirements of the form x*n+y. 2300c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil This class is inherited by all MIPv6 options to help in computing the 2301c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil required Padding for that option, i.e. the need for a Pad1 or PadN 2302c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil option before it. They only need to provide x and y as class 2303c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil parameters. (x=0 and y=0 are used when no alignment is required)""" 2304c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def alignment_delta(self, curpos): 2305c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = self.x ; y = self.y 2306c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x == 0 and y ==0: 2307c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 2308c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil delta = x*((curpos - y + x - 1)/x) + y - curpos 2309c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return delta 2310c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2311c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2312c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptBRAdvice(_MIP6OptAlign, Packet): 2313c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'Mobile IPv6 Option - Binding Refresh Advice' 2314c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField('otype', 2, _mobopttypes), 2315c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField('olen', 2), 2316c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField('rinter', 0) ] 2317c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 2 ; y = 0# alignment requirement: 2n 2318c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2319c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptAltCoA(_MIP6OptAlign, Packet): 2320c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'MIPv6 Option - Alternate Care-of Address' 2321c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField('otype', 3, _mobopttypes), 2322c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField('olen', 16), 2323c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("acoa", "::") ] 2324c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 8 ; y = 6 # alignment requirement: 8n+6 2325c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 232677132687c31a9d3f30c3992c70eb24d1ac0948a7Philclass MIP6OptNonceIndices(_MIP6OptAlign, Packet): 2327c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'MIPv6 Option - Nonce Indices' 2328c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField('otype', 4, _mobopttypes), 2329c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField('olen', 16), 2330c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField('hni', 0), 2331c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField('coni', 0) ] 2332c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 2 ; y = 0 # alignment requirement: 2n 2333c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 233477132687c31a9d3f30c3992c70eb24d1ac0948a7Philclass MIP6OptBindingAuthData(_MIP6OptAlign, Packet): 2335c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'MIPv6 Option - Binding Authorization Data' 2336c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField('otype', 5, _mobopttypes), 2337c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField('olen', 16), 2338c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil BitField('authenticator', 0, 96) ] 2339c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 8 ; y = 2 # alignment requirement: 8n+2 2340c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2341c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptMobNetPrefix(_MIP6OptAlign, Packet): # NEMO - RFC 3963 2342c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'NEMO Option - Mobile Network Prefix' 2343c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 6, _mobopttypes), 23445bbe280843fec8d5955914c78f52cb9cef7d61a4Phil ByteField("olen", 18), 2345c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("reserved", 0), 2346c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("plen", 64), 2347c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("prefix", "::") ] 2348c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 8 ; y = 4 # alignment requirement: 8n+4 2349c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2350c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptLLAddr(_MIP6OptAlign, Packet): # Sect 6.4.4 of RFC 4068 2351c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MIPv6 Option - Link-Layer Address (MH-LLA)" 2352c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 7, _mobopttypes), 2353c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("olen", 7), 2354c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("ocode", 2, _rfc4068_lla_optcode), 2355c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("pad", 0), 2356c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil MACField("lla", ETHER_ANY) ] # Only support ethernet 2357c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 0 ; y = 0 # alignment requirement: none 2358c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2359c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptMNID(_MIP6OptAlign, Packet): # RFC 4283 2360c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MIPv6 Option - Mobile Node Identifier" 2361c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 8, _mobopttypes), 2362c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("olen", None, length_of="id", fmt="B", 2363c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil adjust = lambda pkt,x: x+1), 2364c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("subtype", 1, {1: "NAI"}), 2365c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrLenField("id", "", 2366c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: pkt.olen-1) ] 2367c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 0 ; y = 0 # alignment requirement: none 2368c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2369c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# We only support decoding and basic build. Automatic HMAC computation is 2370c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# too much work for our current needs. It is left to the user (I mean ... 2371c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# you). --arno 2372c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptMsgAuth(_MIP6OptAlign, Packet): # RFC 4285 (Sect. 5) 2373c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MIPv6 Option - Mobility Message Authentication" 2374c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 9, _mobopttypes), 2375c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("olen", None, length_of="authdata", fmt="B", 2376c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil adjust = lambda pkt,x: x+5), 2377c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("subtype", 1, {1: "MN-HA authentication mobility option", 2378c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: "MN-AAA authentication mobility option"}), 2379c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IntField("mspi", None), 2380c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrLenField("authdata", "A"*12, 2381c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: pkt.olen-5) ] 2382c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 4 ; y = 1 # alignment requirement: 4n+1 2383c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2384c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Extracted from RFC 1305 (NTP) : 2385c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# NTP timestamps are represented as a 64-bit unsigned fixed-point number, 2386c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# in seconds relative to 0h on 1 January 1900. The integer part is in the 2387c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# first 32 bits and the fraction part in the last 32 bits. 2388c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass NTPTimestampField(LongField): 2389c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil epoch = (1900, 1, 1, 0, 0, 0, 5, 1, 0) 2390c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2repr(self, pkt, x): 2391c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if x < ((50*31536000)<<32): 2392c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "Some date a few decades ago (%d)" % x 2393c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2394c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # delta from epoch (= (1900, 1, 1, 0, 0, 0, 5, 1, 0)) to 2395c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # January 1st 1970 : 2396c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil delta = -2209075761 2397c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil i = int(x >> 32) 2398c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil j = float(x & 0xffffffff) * 2.0**-32 2399c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil res = i + j + delta 2400c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil from time import strftime 2401c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil t = time.strftime("%a, %d %b %Y %H:%M:%S +0000", time.gmtime(res)) 2402c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2403c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "%s (%d)" % (t, x) 2404c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2405c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptReplayProtection(_MIP6OptAlign, Packet): # RFC 4285 (Sect. 6) 2406c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MIPv6 option - Replay Protection" 2407c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 10, _mobopttypes), 2408c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("olen", 8), 2409c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil NTPTimestampField("timestamp", 0) ] 2410c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 8 ; y = 2 # alignment requirement: 8n+2 2411c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2412c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptCGAParamsReq(_MIP6OptAlign, Packet): # RFC 4866 (Sect. 5.6) 2413c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MIPv6 option - CGA Parameters Request" 2414c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 11, _mobopttypes), 2415c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("olen", 0) ] 2416c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 0 ; y = 0 # alignment requirement: none 2417c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2418c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# XXX TODO: deal with CGA param fragmentation and build of defragmented 2419c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# XXX version. Passing of a big CGAParam structure should be 2420c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# XXX simplified. Make it hold packets, by the way --arno 2421c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptCGAParams(_MIP6OptAlign, Packet): # RFC 4866 (Sect. 5.1) 2422c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MIPv6 option - CGA Parameters" 2423c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 12, _mobopttypes), 2424c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("olen", None, length_of="cgaparams", fmt="B"), 2425c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrLenField("cgaparams", "", 2426c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: pkt.olen) ] 2427c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 0 ; y = 0 # alignment requirement: none 2428c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2429c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptSignature(_MIP6OptAlign, Packet): # RFC 4866 (Sect. 5.2) 2430c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MIPv6 option - Signature" 2431c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 13, _mobopttypes), 2432c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("olen", None, length_of="sig", fmt="B"), 2433c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrLenField("sig", "", 2434c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: pkt.olen) ] 2435c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 0 ; y = 0 # alignment requirement: none 2436c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2437c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptHomeKeygenToken(_MIP6OptAlign, Packet): # RFC 4866 (Sect. 5.3) 2438c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MIPv6 option - Home Keygen Token" 2439c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 14, _mobopttypes), 2440c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("olen", None, length_of="hkt", fmt="B"), 2441c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrLenField("hkt", "", 2442c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: pkt.olen) ] 2443c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 0 ; y = 0 # alignment requirement: none 2444c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2445c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptCareOfTestInit(_MIP6OptAlign, Packet): # RFC 4866 (Sect. 5.4) 2446c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MIPv6 option - Care-of Test Init" 2447c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 15, _mobopttypes), 2448c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("olen", 0) ] 2449c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 0 ; y = 0 # alignment requirement: none 2450c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2451c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptCareOfTest(_MIP6OptAlign, Packet): # RFC 4866 (Sect. 5.5) 2452c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "MIPv6 option - Care-of Test" 2453c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 16, _mobopttypes), 2454c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("olen", None, length_of="cokt", fmt="B"), 2455c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrLenField("cokt", '\x00'*8, 2456c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: pkt.olen) ] 2457c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 0 ; y = 0 # alignment requirement: none 2458c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2459c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6OptUnknown(_MIP6OptAlign, Packet): 2460c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'Scapy6 - Unknown Mobility Option' 2461c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("otype", 6, _mobopttypes), 2462c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil FieldLenField("olen", None, length_of="odata", fmt="B"), 2463c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrLenField("odata", "", 2464c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: pkt.olen) ] 2465c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = 0 ; y = 0 # alignment requirement: none 2466c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2467c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilmoboptcls = { 0: Pad1, 2468c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1: PadN, 2469c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: MIP6OptBRAdvice, 2470c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: MIP6OptAltCoA, 2471c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: MIP6OptNonceIndices, 2472c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 5: MIP6OptBindingAuthData, 2473c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 6: MIP6OptMobNetPrefix, 2474c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 7: MIP6OptLLAddr, 2475c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 8: MIP6OptMNID, 2476c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 9: MIP6OptMsgAuth, 2477c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 10: MIP6OptReplayProtection, 2478c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 11: MIP6OptCGAParamsReq, 2479c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 12: MIP6OptCGAParams, 2480c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 13: MIP6OptSignature, 2481c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 14: MIP6OptHomeKeygenToken, 2482c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 15: MIP6OptCareOfTestInit, 2483c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 16: MIP6OptCareOfTest } 2484c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2485c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2486c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# Main Mobile IPv6 Classes 2487c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2488c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilmhtypes = { 0: 'BRR', 2489c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1: 'HoTI', 2490c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: 'CoTI', 2491c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: 'HoT', 2492c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: 'CoT', 2493c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 5: 'BU', 2494c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 6: 'BA', 2495c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 7: 'BE', 2496c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 8: 'Fast BU', 2497c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 9: 'Fast BA', 2498c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 10: 'Fast NA' } 2499c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2500c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# From http://www.iana.org/assignments/mobility-parameters 2501c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilbastatus = { 0: 'Binding Update accepted', 2502c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1: 'Accepted but prefix discovery necessary', 2503c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 128: 'Reason unspecified', 2504c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 129: 'Administratively prohibited', 2505c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 130: 'Insufficient resources', 2506c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 131: 'Home registration not supported', 2507c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 132: 'Not home subnet', 2508c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 133: 'Not home agent for this mobile node', 2509c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 134: 'Duplicate Address Detection failed', 2510c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 135: 'Sequence number out of window', 2511c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 136: 'Expired home nonce index', 2512c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 137: 'Expired care-of nonce index', 2513c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 138: 'Expired nonces', 2514c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 139: 'Registration type change disallowed', 2515c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 140: 'Mobile Router Operation not permitted', 2516c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 141: 'Invalid Prefix', 2517c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 142: 'Not Authorized for Prefix', 2518c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 143: 'Forwarding Setup failed (prefixes missing)', 2519c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 144: 'MIPV6-ID-MISMATCH', 2520c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 145: 'MIPV6-MESG-ID-REQD', 2521c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 146: 'MIPV6-AUTH-FAIL', 2522c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 147: 'Permanent home keygen token unavailable', 2523c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 148: 'CGA and signature verification failed', 2524c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 149: 'Permanent home keygen token exists', 2525c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 150: 'Non-null home nonce index expected' } 2526c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2527c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2528c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _MobilityHeader(Packet): 2529c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = 'Dummy IPv6 Mobility Header' 2530c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = { IPv6: { "nh": 135 }} 2531c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2532c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def post_build(self, p, pay): 2533c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil p += pay 2534c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = self.len 2535c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.len is None: 2536c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = (len(p)-8)/8 2537c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil p = p[0] + struct.pack("B", l) + p[2:] 2538c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if self.cksum is None: 2539c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cksum = in6_chksum(135, self.underlayer, p) 2540c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 2541c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cksum = self.cksum 2542c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil p = p[:4]+struct.pack("!H", cksum)+p[6:] 2543c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return p 2544c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2545c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2546c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6MH_Generic(_MobilityHeader): # Mainly for decoding of unknown msg 2547c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Mobility Header - Generic Message" 2548c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 2549c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", None), 2550c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("mhtype", None, mhtypes), 2551c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("res", None), 2552c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2553c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrLenField("msg", "\x00"*2, 2554c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: 8*pkt.len-6) ] 2555c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2556c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2557c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2558c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# TODO: make a generic _OptionsField 2559c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _MobilityOptionsField(PacketListField): 2560c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil islist = 1 2561c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil holds_packet = 1 2562c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2563c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, name, default, cls, curpos, count_from=None, length_from=None): 2564c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.curpos = curpos 2565c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil PacketListField.__init__(self, name, default, cls, count_from=count_from, length_from=length_from) 2566c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2567c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def getfield(self, pkt, s): 2568c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l = self.length_from(pkt) 2569c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s[l:],self.m2i(pkt, s[:l]) 2570c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2571c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2len(self, pkt, i): 2572c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return len(self.i2m(pkt, i)) 2573c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2574c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def m2i(self, pkt, x): 2575c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil opt = [] 2576c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil while x: 2577c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil o = ord(x[0]) # Option type 2578c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cls = self.cls 2579c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if moboptcls.has_key(o): 2580c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cls = moboptcls[o] 2581c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil try: 2582c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil op = cls(x) 2583c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil except: 2584c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil op = self.cls(x) 2585c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil opt.append(op) 2586c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if isinstance(op.payload, Raw): 2587c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = op.payload.load 2588c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil del(op.payload) 2589c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 2590c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil x = "" 2591c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return opt 2592c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2593c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2m(self, pkt, x): 2594c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil autopad = None 2595c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil try: 2596c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil autopad = getattr(pkt, "autopad") # Hack : 'autopad' phantom field 2597c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil except: 2598c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil autopad = 1 2599c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2600c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if not autopad: 2601c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "".join(map(str, x)) 2602c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2603c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil curpos = self.curpos 2604c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s = "" 2605c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil for p in x: 2606c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil d = p.alignment_delta(curpos) 2607c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil curpos += d 2608c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if d == 1: 2609c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s += str(Pad1()) 2610c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif d != 0: 2611c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s += str(PadN(optdata='\x00'*(d-2))) 2612c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil pstr = str(p) 2613c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil curpos += len(pstr) 2614c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s += pstr 2615c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2616c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Let's make the class including our option field 2617c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # a multiple of 8 octets long 2618c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil d = curpos % 8 2619c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if d == 0: 2620c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s 2621c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil d = 8 - d 2622c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if d == 1: 2623c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s += str(Pad1()) 2624c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif d != 0: 2625c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s += str(PadN(optdata='\x00'*(d-2))) 2626c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2627c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s 2628c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2629c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def addfield(self, pkt, s, val): 2630c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return s+self.i2m(pkt, val) 2631c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2632c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6MH_BRR(_MobilityHeader): 2633c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Mobility Header - Binding Refresh Request" 2634c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 2635c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", None), 2636c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("mhtype", 0, mhtypes), 2637c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("res", None), 2638c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2639c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("res2", None), 2640c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _PhantomAutoPadField("autopad", 1), # autopad activated by default 2641c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _MobilityOptionsField("options", [], MIP6OptUnknown, 8, 2642c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: 8*pkt.len) ] 2643c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = { IPv6: { "nh": 135 } } 2644c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 2645c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # Hack: BRR, BU and BA have the same hashret that returns the same 2646c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # value "\x00\x08\x09" (concatenation of mhtypes). This is 2647c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # because we need match BA with BU and BU with BRR. --arno 2648c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "\x00\x08\x09" 2649c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2650c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6MH_HoTI(_MobilityHeader): 2651c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Mobility Header - Home Test Init" 2652c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 2653c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", None), 2654c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("mhtype", 1, mhtypes), 2655c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("res", None), 2656c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2657c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrFixedLenField("cookie", "\x00"*8, 8), 2658c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _PhantomAutoPadField("autopad", 1), # autopad activated by default 2659c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _MobilityOptionsField("options", [], MIP6OptUnknown, 16, 2660c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: 8*(pkt.len-1)) ] 2661c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = { IPv6: { "nh": 135 } } 2662c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 2663c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.cookie 2664c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2665c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6MH_CoTI(MIP6MH_HoTI): 2666c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Mobility Header - Care-of Test Init" 2667c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil mhtype = 2 2668c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 2669c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.cookie 2670c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2671c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6MH_HoT(_MobilityHeader): 2672c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Mobility Header - Home Test" 2673c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 2674c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", None), 2675c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("mhtype", 3, mhtypes), 2676c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("res", None), 2677c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2678c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ShortField("index", None), 2679c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrFixedLenField("cookie", "\x00"*8, 8), 2680c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil StrFixedLenField("token", "\x00"*8, 8), 2681c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _PhantomAutoPadField("autopad", 1), # autopad activated by default 2682c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _MobilityOptionsField("options", [], MIP6OptUnknown, 24, 2683c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: 8*(pkt.len-2)) ] 2684c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = { IPv6: { "nh": 135 } } 2685c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 2686c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.cookie 2687c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self): 2688c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if (isinstance(other, MIP6MH_HoTI) and 2689c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.cookie == other.cookie): 2690c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 1 2691c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 2692c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2693c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6MH_CoT(MIP6MH_HoT): 2694c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Mobility Header - Care-of Test" 2695c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil mhtype = 4 2696c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): 2697c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.cookie 2698c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2699c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self): 2700c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if (isinstance(other, MIP6MH_CoTI) and 2701c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.cookie == other.cookie): 2702c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 1 2703c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 2704c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2705c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass LifetimeField(ShortField): 2706c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def i2repr(self, pkt, x): 2707c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "%d sec" % (4*x) 2708c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2709c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6MH_BU(_MobilityHeader): 2710c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Mobility Header - Binding Update" 2711c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 2712c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", None), # unit == 8 bytes (excluding the first 8 bytes) 2713c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("mhtype", 5, mhtypes), 2714c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("res", None), 2715c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2716c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("seq", None), # TODO: ShortNonceField 2717571ee9a1f1431f1ec7e654b5ee991e2118b994efPhil FlagsField("flags", "KHA", 7, "PRMKLHA"), 2718571ee9a1f1431f1ec7e654b5ee991e2118b994efPhil XBitField("reserved", 0, 9), 2719c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil LifetimeField("mhtime", 3), # unit == 4 seconds 2720c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _PhantomAutoPadField("autopad", 1), # autopad activated by default 2721c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _MobilityOptionsField("options", [], MIP6OptUnknown, 12, 2722c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: 8*pkt.len - 4) ] 2723c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = { IPv6: { "nh": 135 } } 2724c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2725c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): # Hack: see comment in MIP6MH_BRR.hashret() 2726c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "\x00\x08\x09" 2727c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2728c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self, other): 2729c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if isinstance(other, MIP6MH_BRR): 2730c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 1 2731c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 2732c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2733c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6MH_BA(_MobilityHeader): 2734c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Mobility Header - Binding ACK" 2735c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 2736c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", None), # unit == 8 bytes (excluding the first 8 bytes) 2737c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("mhtype", 6, mhtypes), 2738c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("res", None), 2739c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2740c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("status", 0, bastatus), 2741571ee9a1f1431f1ec7e654b5ee991e2118b994efPhil FlagsField("flags", "K", 3, "PRK"), 2742571ee9a1f1431f1ec7e654b5ee991e2118b994efPhil XBitField("res2", None, 5), 2743c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("seq", None), # TODO: ShortNonceField 2744c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("mhtime", 0), # unit == 4 seconds 2745c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _PhantomAutoPadField("autopad", 1), # autopad activated by default 2746c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _MobilityOptionsField("options", [], MIP6OptUnknown, 12, 2747c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: 8*pkt.len-4) ] 2748c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = { IPv6: { "nh": 135 }} 2749c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2750c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def hashret(self): # Hack: see comment in MIP6MH_BRR.hashret() 2751c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return "\x00\x08\x09" 2752c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2753c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def answers(self, other): 2754c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if (isinstance(other, MIP6MH_BU) and 2755c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil other.mhtype == 5 and 2756c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.mhtype == 6 and 2757c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil other.flags & 0x1 and # Ack request flags is set 2758c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.seq == other.seq): 2759c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 1 2760c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return 0 2761c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2762c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil_bestatus = { 1: 'Unknown binding for Home Address destination option', 2763c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: 'Unrecognized MH Type value' } 2764c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2765c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil# TODO: match Binding Error to its stimulus 2766c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass MIP6MH_BE(_MobilityHeader): 2767c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil name = "IPv6 Mobility Header - Binding Error" 2768c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil fields_desc = [ ByteEnumField("nh", 59, ipv6nh), 2769c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("len", None), # unit == 8 bytes (excluding the first 8 bytes) 2770c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("mhtype", 7, mhtypes), 2771c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("res", 0), 2772c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil XShortField("cksum", None), 2773c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteEnumField("status", 0, _bestatus), 2774c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ByteField("reserved", 0), 2775c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil IP6Field("ha", "::"), 2776c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _MobilityOptionsField("options", [], MIP6OptUnknown, 24, 2777c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil length_from = lambda pkt: 8*(pkt.len-2)) ] 2778c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overload_fields = { IPv6: { "nh": 135 }} 2779c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2780c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil_mip6_mhtype2cls = { 0: MIP6MH_BRR, 2781c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 1: MIP6MH_HoTI, 2782c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2: MIP6MH_CoTI, 2783c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 3: MIP6MH_HoT, 2784c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 4: MIP6MH_CoT, 2785c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 5: MIP6MH_BU, 2786c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 6: MIP6MH_BA, 2787c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 7: MIP6MH_BE } 2788c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2789c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2790c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2791c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2792c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil### Traceroute6 ### 2793c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2794c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2795c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2796c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass AS_resolver6(AS_resolver_riswhois): 2797c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def _resolve_one(self, ip): 2798c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 2799c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil overloaded version to provide a Whois resolution on the 2800c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil embedded IPv4 address if the address is 6to4 or Teredo. 2801c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Otherwise, the native IPv6 address is passed. 2802c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 2803c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2804c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if in6_isaddr6to4(ip): # for 6to4, use embedded @ 2805c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil tmp = inet_pton(socket.AF_INET6, ip) 2806c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil addr = inet_ntop(socket.AF_INET, tmp[2:6]) 2807c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif in6_isaddrTeredo(ip): # for Teredo, use mapped address 2808c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil addr = teredoAddrExtractInfo(ip)[2] 2809c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 2810c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil addr = ip 2811c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2812c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _, asn, desc = AS_resolver_riswhois._resolve_one(self, addr) 2813c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2814c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return ip,asn,desc 2815c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2816c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass TracerouteResult6(TracerouteResult): 2817c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def show(self): 2818c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.make_table(lambda (s,r): (s.sprintf("%-42s,IPv6.dst%:{TCP:tcp%TCP.dport%}{UDP:udp%UDP.dport%}{ICMPv6EchoRequest:IER}"), # TODO: ICMPv6 ! 2819c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil s.hlim, 2820c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil r.sprintf("%-42s,IPv6.src% {TCP:%TCP.flags%}"+ 282177132687c31a9d3f30c3992c70eb24d1ac0948a7Phil "{ICMPv6DestUnreach:%ir,type%}{ICMPv6PacketTooBig:%ir,type%}"+ 282277132687c31a9d3f30c3992c70eb24d1ac0948a7Phil "{ICMPv6TimeExceeded:%ir,type%}{ICMPv6ParamProblem:%ir,type%}"+ 282377132687c31a9d3f30c3992c70eb24d1ac0948a7Phil "{ICMPv6EchoReply:%ir,type%}"))) 2824c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2825c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def get_trace(self): 2826c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil trace = {} 2827c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2828c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil for s,r in self.res: 2829c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if IPv6 not in s: 2830c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil continue 2831c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil d = s[IPv6].dst 2832c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if d not in trace: 2833c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil trace[d] = {} 2834c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2835c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil t = not (ICMPv6TimeExceeded in r or 2836c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ICMPv6DestUnreach in r or 2837c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ICMPv6PacketTooBig in r or 2838c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil ICMPv6ParamProblem in r) 2839c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2840c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil trace[d][s[IPv6].hlim] = r[IPv6].src, t 2841c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2842c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil for k in trace.values(): 2843c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil m = filter(lambda x: k[x][1], k.keys()) 2844c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if not m: 2845c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil continue 2846c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil m = min(m) 2847c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil for l in k.keys(): 2848c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l > m: 2849c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil del(k[l]) 2850c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2851c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return trace 2852c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2853c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def graph(self, ASres=AS_resolver6(), **kargs): 2854c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil TracerouteResult.graph(self, ASres=ASres, **kargs) 2855c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2856c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef traceroute6(target, dport=80, minttl=1, maxttl=30, sport=RandShort(), 2857c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil l4 = None, timeout=2, verbose=None, **kargs): 2858c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 2859c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil Instant TCP traceroute using IPv6 : 2860c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil traceroute6(target, [maxttl=30], [dport=80], [sport=80]) -> None 2861c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil """ 2862c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if verbose is None: 2863c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil verbose = conf.verb 2864c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2865c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if l4 is None: 2866c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil a,b = sr(IPv6(dst=target, hlim=(minttl,maxttl))/TCP(seq=RandInt(),sport=sport, dport=dport), 2867c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil timeout=timeout, filter="icmp6 or tcp", verbose=verbose, **kargs) 2868c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 2869c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil a,b = sr(IPv6(dst=target, hlim=(minttl,maxttl))/l4, 2870c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil timeout=timeout, verbose=verbose, **kargs) 2871c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2872c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil a = TracerouteResult6(a.res) 2873c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2874c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if verbose: 2875c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil a.display() 2876c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2877c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return a,b 2878c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2879c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2880c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2881c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil### Sockets ### 2882c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2883c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2884c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2885c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass L3RawSocket6(L3RawSocket): 2886c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, type = ETH_P_IPV6, filter=None, iface=None, promisc=None, nofilter=0): 2887c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil L3RawSocket.__init__(self, type, filter, iface, promisc) 288877132687c31a9d3f30c3992c70eb24d1ac0948a7Phil # NOTE: if fragmentation is needed, it will be done by the kernel (RFC 2292) 2889c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.outs = socket.socket(socket.AF_INET6, socket.SOCK_RAW, socket.IPPROTO_RAW) 2890c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.ins = socket.socket(socket.AF_PACKET, socket.SOCK_RAW, socket.htons(type)) 2891c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2892c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhildef IPv6inIP(dst='203.178.135.36', src=None): 2893c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _IPv6inIP.dst = dst 2894c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _IPv6inIP.src = src 2895c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if not conf.L3socket == _IPv6inIP: 2896c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _IPv6inIP.cls = conf.L3socket 2897c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil else: 2898c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil del(conf.L3socket) 2899c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return _IPv6inIP 2900c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2901c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilclass _IPv6inIP(SuperSocket): 2902c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil dst = '127.0.0.1' 2903c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil src = None 2904c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil cls = None 2905c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2906c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def __init__(self, family=socket.AF_INET6, type=socket.SOCK_STREAM, proto=0, **args): 2907c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil SuperSocket.__init__(self, family, type, proto) 2908c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil self.worker = self.cls(**args) 2909c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2910c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def set(self, dst, src=None): 2911c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _IPv6inIP.src = src 2912c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil _IPv6inIP.dst = dst 2913c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2914c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def nonblock_recv(self): 2915c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil p = self.worker.nonblock_recv() 2916c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self._recv(p) 2917c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2918c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def recv(self, x): 2919c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil p = self.worker.recv(x) 2920c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self._recv(p, x) 2921c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2922c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def _recv(self, p, x=MTU): 2923c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if p is None: 2924c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return p 2925c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil elif isinstance(p, IP): 2926c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil # TODO: verify checksum 2927c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if p.src == self.dst and p.proto == socket.IPPROTO_IPV6: 2928c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil if isinstance(p.payload, IPv6): 2929c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return p.payload 2930c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return p 2931c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2932c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil def send(self, x): 2933c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil return self.worker.send(IP(dst=self.dst, src=self.src, proto=socket.IPPROTO_IPV6)/x) 2934c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2935c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2936c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2937c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2938c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil### Layers binding ### 2939c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2940c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil############################################################################# 2941c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2942614f54fc4b269030ba2934b6c353fb43de886e04Philconf.l3types.register(ETH_P_IPV6, IPv6) 2943614f54fc4b269030ba2934b6c353fb43de886e04Philconf.l2types.register(31, IPv6) 2944c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2945c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilbind_layers(Ether, IPv6, type = 0x86dd ) 2946e0602343e528b8c9a53f20a0a40994eb1bb33436rbu@localhost.localdomainbind_layers(CookedLinux, IPv6, proto = 0x86dd ) 2947c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilbind_layers(IPerror6, TCPerror, nh = socket.IPPROTO_TCP ) 2948c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilbind_layers(IPerror6, UDPerror, nh = socket.IPPROTO_UDP ) 2949c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilbind_layers(IPv6, TCP, nh = socket.IPPROTO_TCP ) 2950c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilbind_layers(IPv6, UDP, nh = socket.IPPROTO_UDP ) 2951c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilbind_layers(IP, IPv6, proto = socket.IPPROTO_IPV6 ) 2952c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhilbind_layers(IPv6, IPv6, nh = socket.IPPROTO_IPV6 ) 2953c0ae52849d8287e63ed3bebc36af2da3ff8aba3cPhil 2954