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from wspy_dissector import Dissector
from wspy_dissector import FT_UINT8, FT_NONE
from wspy_dissector import BASE_NONE, BASE_HEX
class homeplug_py(Dissector):
# return the two first parameters of dissector_add as a tuple
def protocol_ids(self):
#you could use self.find_dissector() or self.create_dissector_handle() as
#defined in proto.h and pass the result in the third element of the tuple
#returned
return [ ("ethertype", 0x887B, None) ]
#Main default entry point of dissection
def dissect(self):
self.dissect_mctrl()
self.dissect_mehdr()
self.dissect_melen()
def dissect_mctrl(self):
self.subt = self.subtrees
self.c_tree = self.tree
try:
tree = self.c_tree.add_item(self.hf.homeplug_mctrl, length=1, adv=False)
mctrl_tree = tree.add_subtree(self.subt.mctrl)
mctrl_tree.add_item(self.hf.homeplug_mctrl_rsvd, length=1, adv=False)
mctrl_tree.add_item(self.hf.homeplug_mctrl_ne, length=1)
#item = self.libhandle.proto_tree_add_text(mctrl_tree.raw_tree, self.raw_tvb, 0, 1, "test") => example using libhandle
except Exception, e:
print e
def dissect_mehdr(self):
try:
tree = self.c_tree.add_item(self.hf.homeplug_mehdr, length=1, adv=False)
mehdr_tree = tree.add_subtree(self.subt.mehdr)
mehdr_tree.add_item(self.hf.homeplug_mehdr_mev, length=1, adv=False)
mehdr_tree.add_item(self.hf.homeplug_mehdr_metype, length=1)
except Exception, e:
print e
def dissect_melen(self):
try:
self.c_tree.add_item(self.hf.homeplug_melen, length=1)
except Exception, e:
print e
def dissect_mme(self):
try:
self.c_tree.add_item(self.hf.homeplug_mme, length=1)
except Exception, e:
print e
HOMEPLUG_MCTRL_RSVD = 0x80
HOMEPLUG_MCTRL_NE = 0x7F
HOMEPLUG_MEHDR_MEV = 0xE0
HOMEPLUG_MEHDR_METYPE = 0x1F
def register_protocol():
tp = homeplug_py("HomePlug protocol (python)", "HomePlug.py", "homeplug_py")
#
# Register Protocol Fields
#
hf = tp.hf
# MAC Control Field
hf.add("Mac Control Field", "homeplug_py.mctrl", FT_NONE, BASE_NONE)
hf.add("Reserved", "homeplug_py.mctrl.rsvd", FT_UINT8, bitmask=HOMEPLUG_MCTRL_RSVD)
hf.add("Number of MAC Data Entries", "homeplug_py.mctrl.ne", FT_UINT8, bitmask=HOMEPLUG_MCTRL_NE)
# MAC Entry Header
hf.add("MAC Management Entry Header", "homeplug_py.mehdr", FT_NONE, BASE_NONE)
hf.add("MAC Entry Version", "homeplug_py.mehdr.mev", FT_UINT8, bitmask=HOMEPLUG_MEHDR_MEV)
hf.add("MAC Entry Type", "homeplug_py.mehdr.metype", FT_UINT8, BASE_HEX, bitmask=HOMEPLUG_MEHDR_METYPE)
# MAC Entry Len
hf.add("MAC Management Entry Length", "homeplug_py.melen", FT_UINT8)
# MAC Management Entry
hf.add("MAC Management Entry Data", "homeplug_py.mmentry", FT_UINT8)
#
# Register Subtrees
#
subt = tp.subtrees
#subt.add("homeplug_py") => we let Dissector output the main tree of this protocol
subt.add("mctrl")
subt.add("mehdr")
return tp
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