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# Author: Nicolas VERDIER
# This file is part of memorpy.
#
# memorpy is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# memorpy is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with memorpy. If not, see <http://www.gnu.org/licenses/>.
from .utils import *
class AddressException(Exception):
pass
class Address(object):
""" this class is used to have better representation of memory addresses """
def __init__(self, value, process, default_type = 'uint'):
self.value = int(value)
self.process = process
self.default_type = default_type
self.symbolic_name = None
def read(self, type = None, maxlen = None, errors='raise'):
if maxlen is None:
try:
int(type)
maxlen = int(type)
type = None
except:
pass
if not type:
type = self.default_type
if not maxlen:
return self.process.read(self.value, type=type, errors=errors)
else:
return self.process.read(self.value, type=type, maxlen=maxlen, errors=errors)
def write(self, data, type = None):
if not type:
type = self.default_type
return self.process.write(self.value, data, type=type)
def symbol(self):
return self.process.get_symbolic_name(self.value)
def get_instruction(self):
return self.process.get_instruction(self.value)
def dump(self, ftype = 'bytes', size = 512, before = 32):
buf = self.process.read_bytes(self.value - before, size)
print(hex_dump(buf, self.value - before, ftype=ftype))
def __nonzero__(self):
return self.value is not None and self.value != 0
def __add__(self, other):
return Address(self.value + int(other), self.process, self.default_type)
def __sub__(self, other):
return Address(self.value - int(other), self.process, self.default_type)
def __repr__(self):
if not self.symbolic_name:
self.symbolic_name = self.symbol()
return str('<Addr: %s' % self.symbolic_name + '>')
def __str__(self):
if not self.symbolic_name:
self.symbolic_name = self.symbol()
return str('<Addr: %s' % self.symbolic_name + ' : "%s" (%s)>' % (str(self.read()).encode('unicode_escape'), self.default_type))
def __int__(self):
return int(self.value)
def __hex__(self):
return hex(self.value)
def __get__(self, instance, owner):
return self.value
def __set__(self, instance, value):
self.value = int(value)
def __lt__(self, other):
return self.value < int(other)
def __le__(self, other):
return self.value <= int(other)
def __eq__(self, other):
return self.value == int(other)
def __ne__(self, other):
return self.value != int(other)
def __gt__(self, other):
return self.value > int(other)
def __ge__(self, other):
return self.value >= int(other)
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