class UDP(Packet):
name = "UDP"
fields_desc = [ ShortEnumField("sport", 53, UDP_SERVICES), #standard UDP
ShortEnumField("dport", 53, UDP_SERVICES),
ShortField("len", None),
XShortField("chksum", None),
XByteField("ack",0), #Acknowlegment number - 8bit
X3BytesField("pkg",1)] #pakcage number -24 bit
class UdpInt(Packet):
name = "UDP_INT"
fields_desc = [
ShortEnumField("sport", trans_sec.consts.UDP_INT_SRC_PORT,
UDP_SERVICES),
ShortEnumField("dport", trans_sec.consts.UDP_INT_DST_PORT,
UDP_SERVICES),
ShortField("len", None),
XShortField("chksum", None),
]
class DNSMXRR(DNSRR):
name = "DNS MX Resource Record"
show_indent = 0
fields_desc = [
DNSStrField("rrname", ""),
ShortEnumField("type", 1, dnstypes),
ShortEnumField("rclass", 1, dnsclasses),
IntField("ttl", 0),
RDLenField("rdlen"),
ShortField("mxpriority", 0),
RDataField("rdata", "", length_from=lambda pkt: pkt.rdlen - 2)
]
class DNSSOARR(DNSRR):
name = "DNS SOA Resource Record"
show_indent = 0
fields_desc = [
DNSStrField("rrname", ""),
ShortEnumField("type", 1, dnstypes),
ShortEnumField("rclass", 1, dnsclasses),
IntField("ttl", 0),
ShortField("rdlen", 0),
StrField("mname", ""),
StrField("rname", ""),
IntField("serial", 0),
IntField("refresh", 0),
IntField("retry", 0),
IntField("expire", 0),
IntField("minimum", 0)
]
class FieldSpecifier(Packet):
name = "Field Specifier"
fields_desc = [
ShortEnumField("informationElement", None, information_elements),
ShortField("fieldLength", None),
]
def extract_padding(self, s):
return "", s
class OpenFlowHello(Packet):
name = "OpenFlowHello"
fields_desc = [
ShortEnumField("type", 1, OFP_HELLO_ELEM_TYPES),
ShortField("length", None),
XIntField("bitmap", 0x10) #Field that stores a bitmap of supported
#versions, script only supports
#OF1.3 (0x04). Hence, set to
]
def post_build(self, curr_layer, payload):
if self.length is None:
l = 8 + len(payload)
curr_layer = curr_layer[:2] + pack("!H", l) + curr_layer[4:]
return curr_layer + payload
class StatsRequestBody_v1_0(Packet):
"""
OpenFlow Stats Request Body
"""
name = 'StatsRequestBody_v1_0'
fields_desc = [
ShortEnumField('Type', None, ofp_v1_0_stats_requestreply_type),
ShortField('Flags', None),
_PacketField('<FlowMatchDescriptor>', None,
FlowMatchDescriptorField_v1_0, 40),
ByteField('TableID', None),
XByteField('Reserved', None),
ShortField('EgressPortNumber', None)
]
class NSH(Packet):
"""Network Service Header.
NSH MD-type 1 if there is no ContextHeaders"""
name = "NSH"
fields_desc = [
BitField('Ver', 0, 2),
BitField('OAM', 0, 1),
BitField('Un1', 0, 1),
BitField('TTL', 0, 6),
BitField('Len', None, 6),
BitField('Un2', 0, 4),
BitField('MDType', 1, 4),
ShortEnumField('NextProto', 3, {
1: 'IPv4',
2: 'IPv6',
3: 'Ethernet',
4: 'NSH',
5: 'MPLS'
}),
X3BytesField('NSP', 1),
ByteField('NSI', 255)
]
class StatsReplyBody_v1_0(Packet):
"""
OpenFlow Stats Reply Body
"""
name = 'StatsReplyBody_v1_0'
fields_desc = [
ShortEnumField('Type', None, ofp_v1_0_stats_requestreply_type),
ShortField('Flags', None),
# Description of this OpenFlow switch
ConditionalField(
StrFixedLenField('ManufacturerDescription', None, 256),
lambda pkt: pkt.Type == 0),
ConditionalField(StrFixedLenField('HardwareDescription', None, 256),
lambda pkt: pkt.Type == 0),
ConditionalField(StrFixedLenField('SoftwareDescription', None, 256),
lambda pkt: pkt.Type == 0),
ConditionalField(IntField('SerialNumberDescription', None),
lambda pkt: pkt.Type == 0), ## ??
# Individual flow statistical information /
# Aggregate flow statistical information
ConditionalField(ShortField('Length', None),
lambda pkt: pkt.Type == 1),
ConditionalField(ByteField('TableID', None),
lambda pkt: pkt.Type == 1),
ConditionalField(XByteField('Reserved', None),
lambda pkt: pkt.Type == 1),
ConditionalField(
_PacketField('<FlowMatchDescriptor>', None,
FlowMatchDescriptorField_v1_0, 40),
lambda pkt: pkt.Type == 1),
ConditionalField(IntField('LifetimeDuration', None),
lambda pkt: pkt.Type == 1),
ConditionalField(ShortField('Priority', None),
lambda pkt: pkt.Type == 1),
ConditionalField(ShortField('SoftLifetime', None),
lambda pkt: pkt.Type == 1),
ConditionalField(ShortField('HardLifetime', None),
lambda pkt: pkt.Type == 1),
ConditionalField(ShortField('Reserved', None),
lambda pkt: pkt.Type == 1),
ConditionalField(LongField('NumberOfPacketsTransferred', None),
lambda pkt: pkt.Type in [1, 2]),
ConditionalField(LongField('NumberOfOctetsTransferred', None),
lambda pkt: pkt.Type in [1, 2]),
ConditionalField(
_PacketField('<ActionDescriptors>', None,
ActionDescriptorField_v1_0), ## ???? bytes
lambda pkt: pkt.Type == 1),
ConditionalField(IntField('NumberOfFlows', None),
lambda pkt: pkt.Type == 2),
ConditionalField(IntField('Reserved', None),
lambda pkt: pkt.Type == 2),
# Flow table statistical information
ConditionalField(ByteField('Table_ID', None),
lambda pkt: pkt.Type == 1),
ConditionalField(X3BytesField('Reserved', None),
lambda pkt: pkt.Type == 3),
ConditionalField(StrFixedLenField('TableDescriptionString', None, 16),
lambda pkt: pkt.Type == 3),
ConditionalField(IntField('<FlowWildcard>', None),
lambda pkt: pkt.Type == 3),
ConditionalField(IntField('MaximumNumberOfFlowsSupported', None),
lambda pkt: pkt.Type == 3),
ConditionalField(IntField('NumberOfFlowsInstalled', None),
lambda pkt: pkt.Type == 3),
ConditionalField(IntField('NumberOfPacketsLookedUp', None),
lambda pkt: pkt.Type == 3),
ConditionalField(IntField('NumberOfPacketsMatched', None),
lambda pkt: pkt.Type == 3),
# Port statistical information
ConditionalField(LongField('NumberOfPakctesReceived', None),
lambda pkt: pkt.Type == 4),
ConditionalField(LongField('NumberOfPakctesTransmitted', None),
lambda pkt: pkt.Type == 4),
ConditionalField(LongField('NumberOfOctetsReceived', None),
lambda pkt: pkt.Type == 4),
ConditionalField(LongField('NumberOfOctetsTransmitted', None),
lambda pkt: pkt.Type == 4),
ConditionalField(LongField('NumberOfPacketsDroppedInReception', None),
lambda pkt: pkt.Type == 4),
ConditionalField(
LongField('NumberOfPacketsDroppedInTransmittion', None),
lambda pkt: pkt.Type == 4),
ConditionalField(LongField('NumberOfErrorsInReception', None),
lambda pkt: pkt.Type == 4),
ConditionalField(LongField('NumberOfErrorsInTransmittion', None),
lambda pkt: pkt.Type == 4),
ConditionalField(LongField('NumberOfAlignmentErrors', None),
lambda pkt: pkt.Type == 4),
ConditionalField(LongField('NumberOfOverrunErrors', None),
lambda pkt: pkt.Type == 4),
ConditionalField(LongField('NumberOfCRCErrors', None),
lambda pkt: pkt.Type == 4),
ConditionalField(LongField('NumberOfCollisionErrors', None),
lambda pkt: pkt.Type == 4),
]