volatility3.framework.automagic.construct_layers module

An automagic module to use configuration data to configure and then construct classes that fulfill the descendants of a ConfigurableInterface.

class ConstructionMagic(context, config_path, *args, **kwargs)[source]

Bases: AutomagicInterface

Constructs underlying layers.

Class to run through the requirement tree of the ConfigurableInterface and from the bottom of the tree upwards, attempt to construct all ConstructableRequirementInterface based classes.

Warning:

This automagic should run first to allow existing configurations to have been constructed for use by later automagic

Basic initializer that allows configurables to access their own config settings.

build_configuration()

Constructs a HierarchicalDictionary of all the options required to build this component in the current context.

Ensures that if the class has been created, it can be recreated using the configuration built Inheriting classes must override this to ensure any dependent classes update their configurations too

Return type:

HierarchicalDict

property config: HierarchicalDict

The Hierarchical configuration Dictionary for this Configurable object.

property config_path: str

The configuration path on which this configurable lives.

property context: ContextInterface

The context object that this configurable belongs to/configuration is stored in.

exclusion_list = []

A list of plugin categories (typically operating systems) which the plugin will not operate on

find_requirements(context, config_path, requirement_root, requirement_type, shortcut=True)

Determines if there is actually an unfulfilled Requirement waiting.

This ensures we do not carry out an expensive search when there is no need for a particular Requirement

Parameters:
Return type:

List[Tuple[str, RequirementInterface]]

Returns:

A list of tuples containing the config_path, sub_config_path and requirement identifying the unsatisfied Requirements

classmethod get_requirements()

Returns a list of RequirementInterface objects required by this object.

Return type:

List[RequirementInterface]

classmethod make_subconfig(context, base_config_path, **kwargs)

Convenience function to allow constructing a new randomly generated sub-configuration path, containing each element from kwargs.

Parameters:
  • context (ContextInterface) – The context in which to store the new configuration

  • base_config_path (str) – The base configuration path on which to build the new configuration

  • kwargs – Keyword arguments that are used to populate the new configuration path

Returns:

The newly generated full configuration path

Return type:

str

priority = 0

An ordering to indicate how soon this automagic should be run

classmethod unsatisfied(context, config_path)

Returns a list of the names of all unsatisfied requirements.

Since a satisfied set of requirements will return [], it can be used in tests as follows:

unmet = configurable.unsatisfied(context, config_path)
if unmet:
    raise RuntimeError("Unsatisfied requirements: {}".format(unmet)
Return type:

Dict[str, RequirementInterface]