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# $Id: icmp6.py 23 2006-11-08 15:45:33Z dugsong $
"""Internet Control Message Protocol for IPv6."""
import dpkt, ip6
ICMP6_DST_UNREACH = 1 # dest unreachable, codes:
ICMP6_PACKET_TOO_BIG = 2 # packet too big
ICMP6_TIME_EXCEEDED = 3 # time exceeded, code:
ICMP6_PARAM_PROB = 4 # ip6 header bad
ICMP6_ECHO_REQUEST = 128 # echo service
ICMP6_ECHO_REPLY = 129 # echo reply
MLD_LISTENER_QUERY = 130 # multicast listener query
MLD_LISTENER_REPORT = 131 # multicast listener report
MLD_LISTENER_DONE = 132 # multicast listener done
# RFC2292 decls
ICMP6_MEMBERSHIP_QUERY = 130 # group membership query
ICMP6_MEMBERSHIP_REPORT = 131 # group membership report
ICMP6_MEMBERSHIP_REDUCTION = 132 # group membership termination
ND_ROUTER_SOLICIT = 133 # router solicitation
ND_ROUTER_ADVERT = 134 # router advertisment
ND_NEIGHBOR_SOLICIT = 135 # neighbor solicitation
ND_NEIGHBOR_ADVERT = 136 # neighbor advertisment
ND_REDIRECT = 137 # redirect
ICMP6_ROUTER_RENUMBERING = 138 # router renumbering
ICMP6_WRUREQUEST = 139 # who are you request
ICMP6_WRUREPLY = 140 # who are you reply
ICMP6_FQDN_QUERY = 139 # FQDN query
ICMP6_FQDN_REPLY = 140 # FQDN reply
ICMP6_NI_QUERY = 139 # node information request
ICMP6_NI_REPLY = 140 # node information reply
ICMP6_MAXTYPE = 201
class ICMP6(dpkt.Packet):
__hdr__ = (
('type', 'B', 0),
('code', 'B', 0),
('sum', 'H', 0)
)
class Error(dpkt.Packet):
__hdr__ = (('pad', 'I', 0), )
def unpack(self, buf):
dpkt.Packet.unpack(self, buf)
self.data = self.ip6 = ip6.IP6(self.data)
class Unreach(Error):
pass
class TooBig(Error):
__hdr__ = (('mtu', 'I', 1232), )
class TimeExceed(Error):
pass
class ParamProb(Error):
__hdr__ = (('ptr', 'I', 0), )
class Echo(dpkt.Packet):
__hdr__ = (('id', 'H', 0), ('seq', 'H', 0))
_typesw = { 1:Unreach, 2:TooBig, 3:TimeExceed, 4:ParamProb,
128:Echo, 129:Echo }
def unpack(self, buf):
dpkt.Packet.unpack(self, buf)
try:
self.data = self._typesw[self.type](self.data)
setattr(self, self.data.__class__.__name__.lower(), self.data)
except (KeyError, dpkt.UnpackError):
self.data = buf
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