Source code for dfvfs.analyzer.vmdk_analyzer_helper
# -*- coding: utf-8 -*-
"""The VMDK format analyzer helper implementation."""
from dfvfs.analyzer import analyzer
from dfvfs.analyzer import analyzer_helper
from dfvfs.analyzer import specification
from dfvfs.lib import definitions
[docs]
class VMDKAnalyzerHelper(analyzer_helper.AnalyzerHelper):
"""VMDK analyzer helper."""
FORMAT_CATEGORIES = frozenset([
definitions.FORMAT_CATEGORY_STORAGE_MEDIA_IMAGE])
TYPE_INDICATOR = definitions.TYPE_INDICATOR_VMDK
[docs]
def GetFormatSpecification(self):
"""Retrieves the format specification.
Returns:
FormatSpecification: format specification or None if the format cannot
be defined by a specification object.
"""
format_specification = specification.FormatSpecification(
self.type_indicator)
# VMDK descriptor file signature.
format_specification.AddNewSignature(b'# Disk DescriptorFile', offset=0)
# VMDK sparse extent file signature.
format_specification.AddNewSignature(b'KDMV', offset=0)
# COWD sparse extent file signature.
format_specification.AddNewSignature(b'COWD', offset=0)
return format_specification
analyzer.Analyzer.RegisterHelper(VMDKAnalyzerHelper())