# -*- coding: utf-8 -*-
"""Parser for Google Chrome autofill entries.
The Chrome autofill information is stored in SQLite database files named
Web Data.
"""
from __future__ import unicode_literals
from dfdatetime import posix_time as dfdatetime_posix_time
from plaso.containers import events
from plaso.containers import time_events
from plaso.lib import definitions
from plaso.parsers import sqlite
from plaso.parsers.sqlite_plugins import interface
[docs]class ChromeAutofillEventData(events.EventData):
"""Chrome Autofill event data.
Attributes:
field_name (str): name of form field.
value (str): value populated in form field.
usage_count (int): count of times value has been used in field_name.
"""
DATA_TYPE = 'chrome:autofill:entry'
def __init__(self):
"""Initializes event data."""
super(ChromeAutofillEventData, self).__init__(
data_type=self.DATA_TYPE)
self.field_name = None
self.usage_count = None
self.value = None
[docs]class ChromeAutofillPlugin(interface.SQLitePlugin):
"""Plugin to parse Chrome Autofill entries from Web Data database files."""
NAME = 'chrome_autofill'
DESCRIPTION = 'Parser for Chrome autofill SQLite database files.'
# Define the needed queries.
QUERIES = [
(('SELECT autofill.date_created, autofill.date_last_used, autofill.name, '
'autofill.value, autofill.count FROM autofill ORDER BY date_created'),
'ParseAutofillRow')]
REQUIRED_TABLES = frozenset(['autofill'])
SCHEMAS = [{
'autofill': (
'CREATE TABLE autofill (name VARCHAR, value VARCHAR, '
'value_lower VARCHAR, date_created INTEGER DEFAULT 0, '
'date_last_used INTEGER DEFAULT 0, count INTEGER DEFAULT 1, '
'PRIMARY KEY (name, value));)')}]
[docs] def ParseAutofillRow(
self, parser_mediator, query, row, **unused_kwargs):
"""Parses an autofill entry row.
Args:
parser_mediator (ParserMediator): mediates interactions between parsers
and other components, such as storage and dfvfs.
query (str): query that created the row.
row (sqlite3.Row): row.
"""
query_hash = hash(query)
event_data = ChromeAutofillEventData()
event_data.field_name = self._GetRowValue(query_hash, row, 'name')
event_data.value = self._GetRowValue(query_hash, row, 'value')
event_data.usage_count = self._GetRowValue(query_hash, row, 'count')
event_data.query = query
# Create one event for the first time an autofill entry was used
timestamp = self._GetRowValue(query_hash, row, 'date_created')
date_time = dfdatetime_posix_time.PosixTime(timestamp=timestamp)
event = time_events.DateTimeValuesEvent(
date_time, definitions.TIME_DESCRIPTION_CREATION)
parser_mediator.ProduceEventWithEventData(event, event_data)
# If the autofill value has been used more than once, create another
# event for the most recent time it was used.
if event_data.usage_count > 1:
timestamp = self._GetRowValue(query_hash, row, 'date_last_used')
date_time = dfdatetime_posix_time.PosixTime(timestamp=timestamp)
event = time_events.DateTimeValuesEvent(
date_time, definitions.TIME_DESCRIPTION_LAST_USED)
parser_mediator.ProduceEventWithEventData(event, event_data)
sqlite.SQLiteParser.RegisterPlugin(ChromeAutofillPlugin)