def __insert_atoms(self, p_atom, child=[]):
child.reverse() # reverse child atoms order, due to Block.insert()
debug(self.dbg, 3, '(MPEG4) p_atom %s index in Block: %s' \
% (p_atom.type, p_atom.get_index()))
debug(self.dbg, 3, '(MPEG4) inserting: %s' % [c.type for c in child])
for atom in child:
self.insert(p_atom.get_index()+1, atom)
self[p_atom.get_index()+1].atomic = False
self[p_atom.get_index()+1].hierarchy = p_atom.hierarchy+1
def __insert_atoms(self, p_atom, child=[]):
child.reverse() # reverse child atoms order, due to Block.insert()
debug(self.dbg, 3, '(MPEG4) p_atom %s index in Block: %s' \
% (p_atom.type, p_atom.get_index()))
debug(self.dbg, 3, '(MPEG4) inserting: %s' % [c.type for c in child])
for atom in child:
self.insert(p_atom.get_index() + 1, atom)
self[p_atom.get_index() + 1].atomic = False
self[p_atom.get_index() + 1].hierarchy = p_atom.hierarchy + 1
def map(self, s=''):
# this is to adapt DIB header size to common most applications
self.DIBHeaderSize
expected_size = self.DIBHeaderSize()
self[0].map(s[:4])
real_size = self.DIBHeaderSize()
# remove last values from the header structure
if real_size < expected_size:
to_remove = (expected_size-real_size)/4
for i in range(to_remove):
self.remove(self[-1])
elif real_size > expected_size:
debug(self.dbg, 2, 'DIB header not long enough: not standard')
Layer.map(self, s)
def map(self, s=''):
# this is to adapt DIB header size to common most applications
self.DIBHeaderSize
expected_size = self.DIBHeaderSize()
self[0].map(s[:4])
real_size = self.DIBHeaderSize()
# remove last values from the header structure
if real_size < expected_size:
to_remove = (expected_size - real_size) / 4
for i in range(to_remove):
self.remove(self[-1])
elif real_size > expected_size:
debug(self.dbg, 2, 'DIB header not long enough: not standard')
Layer.map(self, s)
def get_child(self, p_atom):
if int(p_atom.size) <= 8:
return []
s = str(p_atom.data)
child_atoms = []
while len(s) > 0:
child_atoms.append(atom())
child_atoms[-1].map(s)
debug(self.dbg, 3, '(MPEG4) child_atoms:\n%s\n' % child_atoms)
s = s[len(child_atoms[-1]):]
if sum([int(c_atom.size) for c_atom in child_atoms]) == \
int(p_atom.size)-8:
return child_atoms
else:
return []
def get_child(self, p_atom):
if int(p_atom.size) <= 8:
return []
s = str(p_atom.data)
child_atoms = []
while len(s) > 0:
child_atoms.append(atom())
child_atoms[-1].map(s)
debug(self.dbg, 3, '(MPEG4) child_atoms:\n%s\n' % child_atoms)
s=s[len(child_atoms[-1]):]
if sum([int(c_atom.size) for c_atom in child_atoms]) == \
int(p_atom.size)-8:
return child_atoms
else:
return []
def parse(self, s=""):
# parse initial header
self.map(s[:19])
s = s[19:]
# control BGP marker
if self[-1].marker() != 16 * "\xFF":
debug(self.dbg, 1, "bad BGP marker in header")
# then
# iteratively parse successive payloads and headers
while len(s) > 0:
# append BGP payload
if isinstance(self[-1], HEADER):
pay_type = self[-1].type()
pay_len = self[-1].len() - 19
if pay_type in MsgCall.keys():
# BGP payload is recognized: youpi!!!!
self << MsgCall[pay_type]()
# print('%s' % self[-1].show())
self[-1].map(s)
# control payload length
if len(self[-1]) != pay_len:
debug(self.dbg, 1, "inconsistent length between BGP " "header and payload")
else:
# unknown payload
self << RawLayer()
self[-1].map(s[:pay_len])
# append more BGP headers
else:
self.append(HEADER())
self[-1].map(s)
# control BGP marker
if self[-1].marker() != 16 * "\xFF":
debug(self.dbg, 1, "bad BGP marker in header")
# truncate string buffer, and iterate
s = s[len(self[-1]) :]
def parse(self, s=''):
# parse initial header
self.map(s[:19])
s = s[19:]
# control BGP marker
if self[-1].marker() != 16 * '\xFF':
debug(self.dbg, 1, 'bad BGP marker in header')
# then
# iteratively parse successive payloads and headers
while len(s) > 0:
# append BGP payload
if isinstance(self[-1], HEADER):
pay_type = self[-1].type()
pay_len = self[-1].len() - 19
if pay_type in MsgCall.keys():
# BGP payload is recognized: youpi!!!!
self << MsgCall[pay_type]()
#print('%s' % self[-1].show())
self[-1].map(s)
# control payload length
if len(self[-1]) != pay_len:
debug(self.dbg, 1, 'inconsistent length between BGP '\
'header and payload')
else:
# unknown payload
self << RawLayer()
self[-1].map(s[:pay_len])
# append more BGP headers
else:
self.append(HEADER())
self[-1].map(s)
# control BGP marker
if self[-1].marker() != 16 * '\xFF':
debug(self.dbg, 1, 'bad BGP marker in header')
# truncate string buffer, and iterate
s = s[len(self[-1]):]
