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103 lines
3.8 KiB
Python
103 lines
3.8 KiB
Python
# This file is Copyright 2019 Volatility Foundation and licensed under the Volatility Software License 1.0
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# which is available at https://www.volatilityfoundation.org/license/vsl-v1.0
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#
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import logging
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from typing import List
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from volatility3.framework import renderers, exceptions, interfaces
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from volatility3.framework.configuration import requirements
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from volatility3.framework.interfaces import plugins
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from volatility3.framework.layers import intel
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vollog = logging.getLogger(__name__)
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class Statistics(plugins.PluginInterface):
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"""Lists statistics about the memory space."""
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_required_framework_version = (2, 0, 0)
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@classmethod
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def get_requirements(cls) -> List[interfaces.configuration.RequirementInterface]:
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return [
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requirements.TranslationLayerRequirement(
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name="primary",
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description="Memory layer for the kernel",
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architectures=["Intel32", "Intel64"],
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)
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]
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def _generator(self):
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# Do mass mapping and determine the number of different layers and how many pages go to each one
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layer = self.context.layers[self.config["primary"]]
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page_count = swap_count = invalid_page_count = large_page_count = (
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large_swap_count
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) = large_invalid_count = other_invalid = 0
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if isinstance(layer, intel.Intel):
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page_addr = 0
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expected_page_size = 1 << layer.bits_per_register
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while page_addr < layer.maximum_address:
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try:
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_, _, _, page_size, layer_name = list(
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layer.mapping(page_addr, 2 * expected_page_size)
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)[0]
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if layer_name != layer.config["memory_layer"]:
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swap_count += 1
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else:
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page_count += 1
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if page_size > expected_page_size:
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large_page_count += 1
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except exceptions.SwappedInvalidAddressException as excp:
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swap_count += 1
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page_size = 1 << excp.invalid_bits
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if page_size != expected_page_size:
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large_swap_count += 1
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except exceptions.PagedInvalidAddressException as excp:
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invalid_page_count += 1
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page_size = 1 << excp.invalid_bits
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if page_size != expected_page_size:
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large_invalid_count += 1
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except exceptions.InvalidAddressException as excp:
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other_invalid += 1
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page_size = expected_page_size
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vollog.debug(
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"A non-page lookup invalid address exception occurred at: {} in layer {}".format(
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hex(excp.invalid_address), excp.layer_name
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)
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)
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page_addr += page_size
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self._progress_callback(
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(page_addr * 100) / layer.maximum_address, "Reading memory"
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)
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yield (
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0,
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(
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page_count,
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large_page_count,
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swap_count,
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large_swap_count,
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invalid_page_count,
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large_invalid_count,
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other_invalid,
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),
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)
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def run(self):
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return renderers.TreeGrid(
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[
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("Valid pages (all)", int),
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("Valid pages (large)", int),
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("Swapped Pages (all)", int),
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("Swapped Pages (large)", int),
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("Invalid Pages (all)", int),
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("Invalid Pages (large)", int),
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("Other Invalid Pages (all)", int),
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],
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self._generator(),
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)
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