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# This is a generated file! Please edit source .ksy file and use kaitai-struct-compiler to rebuild
from pkg_resources import parse_version
from .kaitaistruct import __version__ as ks_version, KaitaiStruct, KaitaiStream, BytesIO
from enum import Enum
import collections
if parse_version(ks_version) < parse_version('0.7'):
raise Exception("Incompatible Kaitai Struct Python API: 0.7 or later is required, but you have %s" % (ks_version))
from . import udp_datagram
from . import icmp_packet
from . import tcp_segment
from . import ipv4_packet
from . import ipv6_packet
class ProtocolBody(KaitaiStruct):
"""Protocol body represents particular payload on transport level (OSI
layer 4).
Typically this payload in encapsulated into network level (OSI layer
3) packet, which includes "protocol number" field that would be used
to decide what's inside the payload and how to parse it. Thanks to
IANA's standardization effort, multiple network level use the same
IDs for these payloads named "protocol numbers".
This is effectively a "router" type: it expects to get protocol
number as a parameter, and then invokes relevant type parser based
on that parameter.
.. seealso::
Source - http://www.iana.org/assignments/protocol-numbers/protocol-numbers.xhtml
"""
class ProtocolEnum(Enum):
hopopt = 0
icmp = 1
igmp = 2
ggp = 3
ipv4 = 4
st = 5
tcp = 6
cbt = 7
egp = 8
igp = 9
bbn_rcc_mon = 10
nvp_ii = 11
pup = 12
argus = 13
emcon = 14
xnet = 15
chaos = 16
udp = 17
mux = 18
dcn_meas = 19
hmp = 20
prm = 21
xns_idp = 22
trunk_1 = 23
trunk_2 = 24
leaf_1 = 25
leaf_2 = 26
rdp = 27
irtp = 28
iso_tp4 = 29
netblt = 30
mfe_nsp = 31
merit_inp = 32
dccp = 33
x_3pc = 34
idpr = 35
xtp = 36
ddp = 37
idpr_cmtp = 38
tp_plus_plus = 39
il = 40
ipv6 = 41
sdrp = 42
ipv6_route = 43
ipv6_frag = 44
idrp = 45
rsvp = 46
gre = 47
dsr = 48
bna = 49
esp = 50
ah = 51
i_nlsp = 52
swipe = 53
narp = 54
mobile = 55
tlsp = 56
skip = 57
ipv6_icmp = 58
ipv6_nonxt = 59
ipv6_opts = 60
any_host_internal_protocol = 61
cftp = 62
any_local_network = 63
sat_expak = 64
kryptolan = 65
rvd = 66
ippc = 67
any_distributed_file_system = 68
sat_mon = 69
visa = 70
ipcv = 71
cpnx = 72
cphb = 73
wsn = 74
pvp = 75
br_sat_mon = 76
sun_nd = 77
wb_mon = 78
wb_expak = 79
iso_ip = 80
vmtp = 81
secure_vmtp = 82
vines = 83
ttp_or_iptm = 84
nsfnet_igp = 85
dgp = 86
tcf = 87
eigrp = 88
ospfigp = 89
sprite_rpc = 90
larp = 91
mtp = 92
ax_25 = 93
ipip = 94
micp = 95
scc_sp = 96
etherip = 97
encap = 98
any_private_encryption_scheme = 99
gmtp = 100
ifmp = 101
pnni = 102
pim = 103
aris = 104
scps = 105
qnx = 106
a_n = 107
ipcomp = 108
snp = 109
compaq_peer = 110
ipx_in_ip = 111
vrrp = 112
pgm = 113
any_0_hop = 114
l2tp = 115
ddx = 116
iatp = 117
stp = 118
srp = 119
uti = 120
smp = 121
sm = 122
ptp = 123
isis_over_ipv4 = 124
fire = 125
crtp = 126
crudp = 127
sscopmce = 128
iplt = 129
sps = 130
pipe = 131
sctp = 132
fc = 133
rsvp_e2e_ignore = 134
mobility_header = 135
udplite = 136
mpls_in_ip = 137
manet = 138
hip = 139
shim6 = 140
wesp = 141
rohc = 142
reserved_255 = 255
SEQ_FIELDS = ["body"]
def __init__(self, protocol_num, _io, _parent=None, _root=None):
self._io = _io
self._parent = _parent
self._root = _root if _root else self
self.protocol_num = protocol_num
self._debug = collections.defaultdict(dict)
def _read(self):
self._debug['body']['start'] = self._io.pos()
_on = self.protocol
if _on == self._root.ProtocolEnum.ipv6_nonxt:
self.body = self._root.NoNextHeader(self._io, self, self._root)
self.body._read()
elif _on == self._root.ProtocolEnum.ipv4:
self.body = ipv4_packet.Ipv4Packet(self._io)
self.body._read()
elif _on == self._root.ProtocolEnum.udp:
self.body = udp_datagram.UdpDatagram(self._io)
self.body._read()
elif _on == self._root.ProtocolEnum.icmp:
self.body = icmp_packet.IcmpPacket(self._io)
self.body._read()
elif _on == self._root.ProtocolEnum.hopopt:
self.body = self._root.OptionHopByHop(self._io, self, self._root)
self.body._read()
elif _on == self._root.ProtocolEnum.ipv6:
self.body = ipv6_packet.Ipv6Packet(self._io)
self.body._read()
elif _on == self._root.ProtocolEnum.tcp:
self.body = tcp_segment.TcpSegment(self._io)
self.body._read()
self._debug['body']['end'] = self._io.pos()
class NoNextHeader(KaitaiStruct):
"""Dummy type for IPv6 "no next header" type, which signifies end of headers chain."""
SEQ_FIELDS = []
def __init__(self, _io, _parent=None, _root=None):
self._io = _io
self._parent = _parent
self._root = _root if _root else self
self._debug = collections.defaultdict(dict)
def _read(self):
pass
class OptionHopByHop(KaitaiStruct):
SEQ_FIELDS = ["next_header_type", "hdr_ext_len", "body", "next_header"]
def __init__(self, _io, _parent=None, _root=None):
self._io = _io
self._parent = _parent
self._root = _root if _root else self
self._debug = collections.defaultdict(dict)
def _read(self):
self._debug['next_header_type']['start'] = self._io.pos()
self.next_header_type = self._io.read_u1()
self._debug['next_header_type']['end'] = self._io.pos()
self._debug['hdr_ext_len']['start'] = self._io.pos()
self.hdr_ext_len = self._io.read_u1()
self._debug['hdr_ext_len']['end'] = self._io.pos()
self._debug['body']['start'] = self._io.pos()
self.body = self._io.read_bytes((self.hdr_ext_len - 1))
self._debug['body']['end'] = self._io.pos()
self._debug['next_header']['start'] = self._io.pos()
self.next_header = ProtocolBody(self.next_header_type, self._io)
self.next_header._read()
self._debug['next_header']['end'] = self._io.pos()
@property
def protocol(self):
if hasattr(self, '_m_protocol'):
return self._m_protocol if hasattr(self, '_m_protocol') else None
self._m_protocol = KaitaiStream.resolve_enum(self._root.ProtocolEnum, self.protocol_num)
return self._m_protocol if hasattr(self, '_m_protocol') else None
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