ipaddr = Adapter(byte[4],
decode=lambda arr, _: ".".join(map(str, arr)),
encode=lambda ipstr, _: map(int, ipstr.split(".")))
print ipaddr.unpack("ABCD") # 65.66.67.68
print repr(ipaddr.pack("127.0.0.1")) # '\x7f\x00\x00\x01'
mac_addr = Adapter(
byte[6],
decode=lambda arr, _: "-".join(map("%02x".__mod__, arr)),
encode=lambda macstr, _: macstr.replace("-", "").decode("hex"))
ethernet_header = Struct("destination" / mac_addr, "source" / mac_addr,
"type" / int16ub)
print ethernet_header.unpack("123456ABCDEF\x86\xDD")
ethernet_header = Struct(
"destination" / mac_addr, "source" / mac_addr, "type" / Enum(
int16ub,
IPv4=0x0800,
ARP=0x0806,
RARP=0x8035,
X25=0x0805,
IPX=0x8137,
IPv6=0x86DD,
))
print ethernet_header.unpack("123456ABCDEF\x86\xDD")
prefixed_string = byte >> Raw(this[0])
"dont_fragment" / flag,
"more_fragments" / flag,
),
"frame_offset" / Bits(13),
),
"ttl" / int8u,
"protocol" / Enum(int8u, ICMP = 1, TCP = 6, UDP = 17),
"checksum" / int16ub,
"source" / ipaddr,
"destination" / ipaddr,
"options" / Raw(this.header_length - 20),
)
if __name__ == "__main__":
cap = "4500003ca0e3000080116185c0a80205d474a126".decode("hex")
obj = ipv4_header.unpack(cap)
print (obj)
#rebuilt = ipv4_header.pack(obj)
#print (repr(rebuilt))
#assert cap == rebuilt
)
print ipaddr.unpack("ABCD") # 65.66.67.68
print repr(ipaddr.pack("127.0.0.1")) # '\x7f\x00\x00\x01'
mac_addr = Adapter(byte[6],
decode = lambda arr, _: "-".join(map("%02x".__mod__, arr)),
encode = lambda macstr, _: macstr.replace("-", "").decode("hex")
)
ethernet_header = Struct(
"destination" / mac_addr,
"source" / mac_addr,
"type" / int16ub
)
print ethernet_header.unpack("123456ABCDEF\x86\xDD")
ethernet_header = Struct(
"destination" / mac_addr,
"source" / mac_addr,
"type" / Enum(int16ub,
IPv4 = 0x0800,
ARP = 0x0806,
RARP = 0x8035,
X25 = 0x0805,
IPX = 0x8137,
IPv6 = 0x86DD,
)
)
print ethernet_header.unpack("123456ABCDEF\x86\xDD")
