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https://github.com/volatilityfoundation/volatility3.git
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84 lines
3.5 KiB
Python
84 lines
3.5 KiB
Python
import logging
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import typing
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from volatility.framework import interfaces, validity, exceptions
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vollog = logging.getLogger(__name__)
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class ObjectTemplate(interfaces.objects.Template, validity.ValidityRoutines):
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"""Factory class that produces objects that adhere to the Object interface on demand
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This is effectively a method of currying, but adds more structure to avoid abuse.
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It also allows inspection of information that should already be known:
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* Type size
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* Members
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* etc
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"""
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def __init__(self, object_class = None, type_name = None, **arguments):
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super().__init__(type_name = type_name, **arguments)
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self._check_class(object_class, interfaces.objects.ObjectInterface)
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self._arguments['object_class'] = object_class
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@property
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def size(self):
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"""Returns the children of the templated object (see :class:`~volatility.framework.interfaces.objects.ObjectInterface.VolTemplateProxy`)"""
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return self.vol.object_class.VolTemplateProxy.size(self)
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@property
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def children(self):
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"""Returns the children of the templated object (see :class:`~volatility.framework.interfaces.objects.ObjectInterface.VolTemplateProxy`)
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"""
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return self.vol.object_class.VolTemplateProxy.children(self)
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def relative_child_offset(self, child):
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"""Returns the relative offset of a child of the templated object (see :class:`~volatility.framework.interfaces.objects.ObjectInterface.VolTemplateProxy`)
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"""
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return self.vol.object_class.VolTemplateProxy.relative_child_offset(self, child)
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def replace_child(self, old_child, new_child):
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"""Replaces `old_child` for `new_child` in the templated object's child list (see :class:`~volatility.framework.interfaces.objects.ObjectInterface.VolTemplateProxy`)
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"""
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return self.vol.object_class.VolTemplateProxy.replace_child(self, old_child, new_child)
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def __call__(self, context, object_info):
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"""Constructs the object
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Returns: an object adhereing to the :class:`~volatility.framework.interfaces.objects.ObjectInterface`
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"""
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arguments = {}
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arguments.update(self.vol)
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del arguments['object_class']
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return self.vol.object_class(context = context,
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object_info = object_info,
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**arguments)
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class ReferenceTemplate(interfaces.objects.Template):
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"""Factory class that produces objects based on a delayed reference type
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Attempts to access any standard attributes of a resolved template will result in a
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:class:`~volatility.framework.exceptions.SymbolError`.
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"""
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@property
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def children(self):
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return []
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def _unresolved(self, *args, **kwargs) -> typing.Any:
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"""Referenced symbols must be appropriately resolved before they can provide information such as size
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This is because the size request has no context within which to determine the actual symbol structure.
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"""
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raise exceptions.SymbolError(
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"Template contains no information about its structure: {}".format(self.vol.type_name))
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size = property(_unresolved) # type: typing.ClassVar[typing.Any]
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replace_child = _unresolved # type: typing.ClassVar[typing.Any]
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relative_child_offset = _unresolved # type: typing.ClassVar[typing.Any]
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def __call__(self, context, object_info):
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template = context.symbol_space.get_type(self.vol.type_name)
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return template(context = context, object_info = object_info)
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