99 lines
3.1 KiB
Python
99 lines
3.1 KiB
Python
#!/usr/bin/python
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# -*- coding: utf-8 -*-
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#
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# Copyright 2014 The Plaso Project Authors.
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# Please see the AUTHORS file for details on individual authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Parser for Extensible Storage Engine (ESE) database files (EDB)."""
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import logging
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import pyesedb
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from plaso.lib import errors
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from plaso.parsers import interface
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from plaso.parsers import manager
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from plaso.parsers import plugins
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if pyesedb.get_version() < '20140301':
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raise ImportWarning(u'EseDbParser requires at least pyesedb 20140301.')
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class EseDbCache(plugins.BasePluginCache):
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"""A cache storing query results for ESEDB plugins."""
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class EseDbParser(interface.BasePluginsParser):
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"""Parses Extensible Storage Engine (ESE) database files (EDB)."""
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NAME = 'esedb'
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DESCRIPTION = u'Parser for Extensible Storage Engine (ESE) database files.'
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_plugin_classes = {}
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def __init__(self):
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"""Initializes a parser object."""
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super(EseDbParser, self).__init__()
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self._plugins = EseDbParser.GetPluginObjects()
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def Parse(self, parser_context, file_entry, parser_chain=None):
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"""Extracts data from an ESE database File.
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Args:
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parser_context: A parser context object (instance of ParserContext).
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file_entry: A file entry object (instance of dfvfs.FileEntry).
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parser_chain: Optional string containing the parsing chain up to this
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point. The default is None.
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Raises:
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UnableToParseFile: when the file cannot be parsed.
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"""
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file_object = file_entry.GetFileObject()
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esedb_file = pyesedb.file()
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try:
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esedb_file.open_file_object(file_object)
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except IOError as exception:
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file_object.close()
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raise errors.UnableToParseFile(
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u'[{0:s}] unable to parse file {1:s} with error: {2:s}'.format(
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self.NAME, file_entry.name, exception))
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# Add ourselves to the parser chain, which will be used in all subsequent
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# event creation in this parser.
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parser_chain = self._BuildParserChain(parser_chain)
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# Compare the list of available plugins.
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cache = EseDbCache()
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for plugin_object in self._plugins:
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try:
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plugin_object.Process(
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parser_context, file_entry=file_entry, parser_chain=parser_chain,
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database=esedb_file, cache=cache)
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except errors.WrongPlugin:
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logging.debug((
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u'[{0:s}] plugin: {1:s} cannot parse the ESE database: '
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u'{2:s}').format(
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self.NAME, plugin_object.NAME, file_entry.name))
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# TODO: explicitly clean up cache.
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esedb_file.close()
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file_object.close()
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manager.ParsersManager.RegisterParser(EseDbParser)
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