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Netfilter all kernels #577

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27 changes: 20 additions & 7 deletions volatility/plugins/linux/common.py
Original file line number Diff line number Diff line change
Expand Up @@ -76,20 +76,33 @@ def register_options(config):
config.add_option("VIRTUAL_SHIFT", type = 'int', default = 0, help = "Linux kernel virtual shift address")

def is_known_address(self, addr, modules):
return self.is_known_address_name(addr, modules)[0]

def is_known_address_name(self, addr, modules):
addr = int(addr)

text = self.profile.get_symbol("_text")
etext = self.profile.get_symbol("_etext")

return (self.addr_space.address_compare(addr, text) != -1 and self.addr_space.address_compare(addr, etext) == -1) or self.address_in_module(addr, modules)
found = True

if self.address_in_range(addr, text, etext):
module = "[%s]" % (self.profile.get_symbol_by_address("kernel", addr) or "kernel")
else:
module = self.address_in_module(addr, modules)
if not module:
found = False
module = ""

return (found, module)

def address_in_module(self, addr, modules):

for (_, start, end) in modules:
if self.addr_space.address_compare(addr, start) != -1 and self.addr_space.address_compare(addr, end) == -1:
return True

return False
for (module, start, end) in modules:
if self.address_in_range(addr, start, end):
return module

def address_in_range(self, addr, start, end):
return self.addr_space.address_compare(addr, start) != -1 and self.addr_space.address_compare(addr, end) == -1

def verify_ops(self, ops, op_members, modules):
ops_addr = ops.v()
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