mirror of
https://github.com/volatilityfoundation/volatility3.git
synced 2026-08-21 22:12:23 +02:00
Mike Auty
eae84fd8e0
We shouldn't be stacking unless we're required, so now we run after the construction phase, and run our own construction phase is we've changed anything.
36 lines
1.8 KiB
Python
36 lines
1.8 KiB
Python
import logging
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from volatility.framework import interfaces
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vollog = logging.getLogger(__name__)
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class ConstructionMagic(interfaces.automagic.AutomagicInterface):
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"""Runs through the requirement tree and from the bottom up attempts to construct all TranslationLayerRequirements
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This should run first to prevent existing configurations getting re-configured
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"""
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priority = 0
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def __call__(self, context, config_path, requirement, optional = False):
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if not requirement.validate(context, config_path):
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# Having called validate at the top level tells us both that we need to dig deeper
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# but also ensures that TranslationLayerRequirements have got the correct subrequirements if their class is populated
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success = True
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subreq_config_path = interfaces.configuration.path_join(config_path, requirement.name)
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for subreq in requirement.requirements.values():
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self(context, subreq_config_path, subreq, optional or subreq.optional)
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valid = subreq.validate(context, subreq_config_path)
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# We want to traverse optional paths, so don't check until we've tried to validate
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# We also don't want to emit a debug message when a parent is optional, hence the optional parameter
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if not valid and not (optional or subreq.optional):
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vollog.debug("Failed on requirement: {}".format(subreq_config_path))
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success = False
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if not success:
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return False
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elif isinstance(requirement, interfaces.configuration.ConstructableRequirementInterface):
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# We know all the subrequirements are filled, so let's populate
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requirement.construct(context, config_path)
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return True
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