mirror of
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91 lines
3.7 KiB
Python
91 lines
3.7 KiB
Python
"""
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Created on 10 Apr 2013
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@author: mike
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"""
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import copy
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from volatility.framework import interfaces, objects
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class NativeTable(interfaces.symbols.NativeTableInterface):
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"""Symbol List that handles Native types"""
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def __init__(self, name, native_dictionary):
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super().__init__(name, self)
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self._native_dictionary = copy.deepcopy(native_dictionary)
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self._overrides = {}
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for native_type in self._native_dictionary:
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native_class, _native_struct = self._native_dictionary[native_type]
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self._overrides[native_type] = native_class
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# Create this once early, because it may get used a lot
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self._types = set(self._native_dictionary).union(
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{'enum', 'array', 'bitfield', 'void', 'pointer', 'string', 'bytes', 'function'})
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def get_type_class(self, name):
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ntype, fmt = native_types.get(name, (objects.Integer, ''))
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return ntype
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@property
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def types(self):
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"""Returns an iterator of the symbol type names"""
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return self._types
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def get_type(self, type_name):
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"""Resolves a symbol name into an object template
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symbol_space is used to resolve any subtype symbols if they don't exist in this list
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"""
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# NOTE: These need updating whenever the object init signatures change
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additional = {}
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obj = None
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if type_name == 'void' or type_name == 'function':
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obj = objects.Void
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elif type_name == 'array':
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obj = objects.Array
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additional = {"count": 0, "subtype": self.get_type('void')}
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elif type_name == 'enum':
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obj = objects.Enumeration
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additional = {"subtype": self.get_type('void'), "choices": {}}
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elif type_name == 'bitfield':
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obj = objects.BitField
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additional = {"start_bit": 0, "end_bit": 0}
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elif type_name == 'string':
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obj = objects.String
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additional = {"max_length": 0}
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elif type_name == 'bytes':
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obj = objects.Bytes
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additional = {"length": 0}
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if obj is not None:
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return objects.templates.ObjectTemplate(obj, type_name = type_name, **additional)
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_native_type, native_format = self._native_dictionary[type_name]
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if type_name == 'pointer':
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additional = {'subtype': self.get_type('void')}
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return objects.templates.ObjectTemplate(self.get_type_class(type_name), # pylint: disable=W0142
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type_name = type_name,
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struct_format = native_format,
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**additional)
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native_types = {'int': (objects.Integer, '<i'),
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'long': (objects.Integer, '<i'),
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'unsigned long': (objects.Integer, '<I'),
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'unsigned int': (objects.Integer, '<I'),
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'pointer': (objects.Pointer, '<I'),
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'char': (objects.Integer, '<b'),
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'byte': (objects.Bytes, '<c'),
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'unsigned char': (objects.Integer, '<B'),
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'unsigned short int': (objects.Integer, '<H'),
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'unsigned short': (objects.Integer, '<H'),
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'unsigned be short': (objects.Integer, '>H'),
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'short': (objects.Integer, '<h'),
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'long long': (objects.Integer, '<q'),
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'unsigned long long': (objects.Integer, '<Q'),
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'float': (objects.Float, "<d"),
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'double': (objects.Float, "<d"),
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'wchar': (objects.Integer, '<H')}
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x86NativeTable = NativeTable("native", native_types)
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native_types['pointer'] = (objects.Pointer, '<Q')
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x64NativeTable = NativeTable("native", native_types)
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