# -*- coding: utf-8 -*-
"""This file contains a parser for the Mozilla Firefox history."""

from __future__ import unicode_literals

# pylint: disable=wrong-import-order
try:
  from pysqlite2 import dbapi2 as sqlite3
except ImportError:
  import sqlite3

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


# Check SQlite version, bail out early if too old.
if sqlite3.sqlite_version_info < (3, 7, 8):
  raise ImportWarning(
      'FirefoxHistoryParser requires at least SQLite version 3.7.8.')


class FirefoxPlacesBookmarkAnnotationEventData(events.EventData):
  """Firefox bookmark annotation event data.

  Attributes:
    content (str): annotation content.
    title (str): title of the bookmark folder.
    url (str): bookmarked URL.
  """

  DATA_TYPE = 'firefox:places:bookmark_annotation'

  def __init__(self):
    """Initializes event data."""
    super(FirefoxPlacesBookmarkAnnotationEventData, self).__init__(
        data_type=self.DATA_TYPE)
    self.content = None
    self.title = None
    self.url = None


class FirefoxPlacesBookmarkFolderEventData(events.EventData):
  """Firefox bookmark folder event data.

  Attributes:
    title (str): title of the bookmark folder.
  """

  DATA_TYPE = 'firefox:places:bookmark_folder'

  def __init__(self):
    """Initializes event data."""
    super(FirefoxPlacesBookmarkFolderEventData, self).__init__(
        data_type=self.DATA_TYPE)
    self.title = None


class FirefoxPlacesBookmarkEventData(events.EventData):
  """Firefox bookmark event data.

  Attributes:
    bookmark_type (int): bookmark type.
    hostname (str): hostname.
    places_title (str): places title.
    title (str): title of the bookmark folder.
    url (str): bookmarked URL.
    visit_count (int): visit count.
  """

  DATA_TYPE = 'firefox:places:bookmark'

  def __init__(self):
    """Initializes event data."""
    super(FirefoxPlacesBookmarkEventData, self).__init__(
        data_type=self.DATA_TYPE)
    self.host = None
    self.places_title = None
    self.title = None
    self.type = None
    self.url = None
    self.visit_count = None


# TODO: refactor extra attribute.
class FirefoxPlacesPageVisitedEventData(events.EventData):
  """Firefox page visited event data.

  Attributes:
    extra (list[object]): extra event data.
    hostname (str): visited hostname.
    title (str): title of the visited page.
    url (str): URL of the visited page.
    visit_count (int): visit count.
    visit_type (str): transition type for the event.
  """

  DATA_TYPE = 'firefox:places:page_visited'

  def __init__(self):
    """Initializes event data."""
    super(FirefoxPlacesPageVisitedEventData, self).__init__(
        data_type=self.DATA_TYPE)
    self.extra = None
    self.host = None
    self.title = None
    self.url = None
    self.visit_count = None
    self.visit_type = None


class FirefoxDownloadEventData(events.EventData):
  """Firefox download event data.

  Attributes:
    full_path (str): full path of the target of the download.
    mime_type (str): mime type of the download.
    name (str): name of the download.
    received_bytes (int): number of bytes received.
    referrer (str): referrer URL of the download.
    temporary_location (str): temporary location of the download.
    total_bytes (int): total number of bytes of the download.
    url (str): source URL of the download.
  """

  DATA_TYPE = 'firefox:downloads:download'

  def __init__(self):
    """Initializes event data."""
    super(FirefoxDownloadEventData, self).__init__(
        data_type=self.DATA_TYPE)
    self.full_path = None
    self.mime_type = None
    self.name = None
    self.offset = None
    self.received_bytes = None
    self.referrer = None
    self.temporary_location = None
    self.total_bytes = None
    self.url = None


class FirefoxHistoryPlugin(interface.SQLitePlugin):
  """Parses a Firefox history file.

     The Firefox history is stored in a SQLite database file named
     places.sqlite.
  """

  NAME = 'firefox_history'
  DESCRIPTION = 'Parser for Firefox history SQLite database files.'

  # Define the needed queries.
  QUERIES = [
      (('SELECT moz_historyvisits.id, moz_places.url, moz_places.title, '
        'moz_places.visit_count, moz_historyvisits.visit_date, '
        'moz_historyvisits.from_visit, moz_places.rev_host, '
        'moz_places.hidden, moz_places.typed, moz_historyvisits.visit_type '
        'FROM moz_places, moz_historyvisits '
        'WHERE moz_places.id = moz_historyvisits.place_id'),
       'ParsePageVisitedRow'),
      (('SELECT moz_bookmarks.type, moz_bookmarks.title AS bookmark_title, '
        'moz_bookmarks.dateAdded, moz_bookmarks.lastModified, '
        'moz_places.url, moz_places.title AS places_title, '
        'moz_places.rev_host, moz_places.visit_count, moz_bookmarks.id '
        'FROM moz_places, moz_bookmarks '
        'WHERE moz_bookmarks.fk = moz_places.id AND moz_bookmarks.type <> 3'),
       'ParseBookmarkRow'),
      (('SELECT moz_items_annos.content, moz_items_annos.dateAdded, '
        'moz_items_annos.lastModified, moz_bookmarks.title, '
        'moz_places.url, moz_places.rev_host, moz_items_annos.id '
        'FROM moz_items_annos, moz_bookmarks, moz_places '
        'WHERE moz_items_annos.item_id = moz_bookmarks.id '
        'AND moz_bookmarks.fk = moz_places.id'),
       'ParseBookmarkAnnotationRow'),
      (('SELECT moz_bookmarks.id, moz_bookmarks.title,'
        'moz_bookmarks.dateAdded, moz_bookmarks.lastModified '
        'FROM moz_bookmarks WHERE moz_bookmarks.type = 2'),
       'ParseBookmarkFolderRow')]

  # The required tables.
  REQUIRED_TABLES = frozenset([
      'moz_places', 'moz_historyvisits', 'moz_bookmarks',
      'moz_items_annos'])

  _SCHEMA_V24 = {
      'moz_anno_attributes': (
          'CREATE TABLE moz_anno_attributes ( id INTEGER PRIMARY KEY, name '
          'VARCHAR(32) UNIQUE NOT NULL)'),
      'moz_annos': (
          'CREATE TABLE moz_annos ( id INTEGER PRIMARY KEY, place_id INTEGER '
          'NOT NULL, anno_attribute_id INTEGER, mime_type VARCHAR(32) DEFAULT '
          'NULL, content LONGVARCHAR, flags INTEGER DEFAULT 0, expiration '
          'INTEGER DEFAULT 0, type INTEGER DEFAULT 0, dateAdded INTEGER '
          'DEFAULT 0, lastModified INTEGER DEFAULT 0)'),
      'moz_bookmarks': (
          'CREATE TABLE moz_bookmarks ( id INTEGER PRIMARY KEY, type INTEGER, '
          'fk INTEGER DEFAULT NULL, parent INTEGER, position INTEGER, title '
          'LONGVARCHAR, keyword_id INTEGER, folder_type TEXT, dateAdded '
          'INTEGER, lastModified INTEGER)'),
      'moz_bookmarks_roots': (
          'CREATE TABLE moz_bookmarks_roots ( root_name VARCHAR(16) UNIQUE, '
          'folder_id INTEGER)'),
      'moz_favicons': (
          'CREATE TABLE moz_favicons ( id INTEGER PRIMARY KEY, url '
          'LONGVARCHAR UNIQUE, data BLOB, mime_type VARCHAR(32), expiration '
          'LONG)'),
      'moz_historyvisits': (
          'CREATE TABLE moz_historyvisits ( id INTEGER PRIMARY KEY, '
          'from_visit INTEGER, place_id INTEGER, visit_date INTEGER, '
          'visit_type INTEGER, session INTEGER)'),
      'moz_inputhistory': (
          'CREATE TABLE moz_inputhistory ( place_id INTEGER NOT NULL, input '
          'LONGVARCHAR NOT NULL, use_count INTEGER, PRIMARY KEY (place_id, '
          'input))'),
      'moz_items_annos': (
          'CREATE TABLE moz_items_annos ( id INTEGER PRIMARY KEY, item_id '
          'INTEGER NOT NULL, anno_attribute_id INTEGER, mime_type VARCHAR(32) '
          'DEFAULT NULL, content LONGVARCHAR, flags INTEGER DEFAULT 0, '
          'expiration INTEGER DEFAULT 0, type INTEGER DEFAULT 0, dateAdded '
          'INTEGER DEFAULT 0, lastModified INTEGER DEFAULT 0)'),
      'moz_keywords': (
          'CREATE TABLE moz_keywords ( id INTEGER PRIMARY KEY AUTOINCREMENT, '
          'keyword TEXT UNIQUE)'),
      'moz_places': (
          'CREATE TABLE moz_places ( id INTEGER PRIMARY KEY, url LONGVARCHAR, '
          'title LONGVARCHAR, rev_host LONGVARCHAR, visit_count INTEGER '
          'DEFAULT 0, hidden INTEGER DEFAULT 0 NOT NULL, typed INTEGER '
          'DEFAULT 0 NOT NULL, favicon_id INTEGER, frecency INTEGER DEFAULT '
          '-1 NOT NULL, last_visit_date INTEGER )')}

  _SCHEMA_V25 = {
      'moz_anno_attributes': (
          'CREATE TABLE moz_anno_attributes ( id INTEGER PRIMARY KEY, name '
          'VARCHAR(32) UNIQUE NOT NULL)'),
      'moz_annos': (
          'CREATE TABLE moz_annos ( id INTEGER PRIMARY KEY, place_id INTEGER '
          'NOT NULL, anno_attribute_id INTEGER, mime_type VARCHAR(32) DEFAULT '
          'NULL, content LONGVARCHAR, flags INTEGER DEFAULT 0, expiration '
          'INTEGER DEFAULT 0, type INTEGER DEFAULT 0, dateAdded INTEGER '
          'DEFAULT 0, lastModified INTEGER DEFAULT 0)'),
      'moz_bookmarks': (
          'CREATE TABLE moz_bookmarks ( id INTEGER PRIMARY KEY, type INTEGER, '
          'fk INTEGER DEFAULT NULL, parent INTEGER, position INTEGER, title '
          'LONGVARCHAR, keyword_id INTEGER, folder_type TEXT, dateAdded '
          'INTEGER, lastModified INTEGER, guid TEXT)'),
      'moz_bookmarks_roots': (
          'CREATE TABLE moz_bookmarks_roots ( root_name VARCHAR(16) UNIQUE, '
          'folder_id INTEGER)'),
      'moz_favicons': (
          'CREATE TABLE moz_favicons ( id INTEGER PRIMARY KEY, url '
          'LONGVARCHAR UNIQUE, data BLOB, mime_type VARCHAR(32), expiration '
          'LONG, guid TEXT)'),
      'moz_historyvisits': (
          'CREATE TABLE moz_historyvisits ( id INTEGER PRIMARY KEY, '
          'from_visit INTEGER, place_id INTEGER, visit_date INTEGER, '
          'visit_type INTEGER, session INTEGER)'),
      'moz_hosts': (
          'CREATE TABLE moz_hosts ( id INTEGER PRIMARY KEY, host TEXT NOT '
          'NULL UNIQUE, frecency INTEGER, typed INTEGER NOT NULL DEFAULT 0, '
          'prefix TEXT)'),
      'moz_inputhistory': (
          'CREATE TABLE moz_inputhistory ( place_id INTEGER NOT NULL, input '
          'LONGVARCHAR NOT NULL, use_count INTEGER, PRIMARY KEY (place_id, '
          'input))'),
      'moz_items_annos': (
          'CREATE TABLE moz_items_annos ( id INTEGER PRIMARY KEY, item_id '
          'INTEGER NOT NULL, anno_attribute_id INTEGER, mime_type VARCHAR(32) '
          'DEFAULT NULL, content LONGVARCHAR, flags INTEGER DEFAULT 0, '
          'expiration INTEGER DEFAULT 0, type INTEGER DEFAULT 0, dateAdded '
          'INTEGER DEFAULT 0, lastModified INTEGER DEFAULT 0)'),
      'moz_keywords': (
          'CREATE TABLE moz_keywords ( id INTEGER PRIMARY KEY AUTOINCREMENT, '
          'keyword TEXT UNIQUE)'),
      'moz_places': (
          'CREATE TABLE moz_places ( id INTEGER PRIMARY KEY, url LONGVARCHAR, '
          'title LONGVARCHAR, rev_host LONGVARCHAR, visit_count INTEGER '
          'DEFAULT 0, hidden INTEGER DEFAULT 0 NOT NULL, typed INTEGER '
          'DEFAULT 0 NOT NULL, favicon_id INTEGER, frecency INTEGER DEFAULT '
          '-1 NOT NULL, last_visit_date INTEGER , guid TEXT)'),
      'sqlite_stat1': (
          'CREATE TABLE sqlite_stat1(tbl, idx, stat)')}

  SCHEMAS = [_SCHEMA_V24, _SCHEMA_V25]

  # Cache queries.
  URL_CACHE_QUERY = (
      'SELECT h.id AS id, p.url, p.rev_host FROM moz_places p, '
      'moz_historyvisits h WHERE p.id = h.place_id')

  # TODO: move to formatter.
  _BOOKMARK_TYPES = {
      1: 'URL',
      2: 'Folder',
      3: 'Separator',
  }

  def ParseBookmarkAnnotationRow(
      self, parser_mediator, query, row, **unused_kwargs):
    """Parses a bookmark annotation 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 = FirefoxPlacesBookmarkAnnotationEventData()
    event_data.content = self._GetRowValue(query_hash, row, 'content')
    event_data.offset = self._GetRowValue(query_hash, row, 'id')
    event_data.query = query
    event_data.title = self._GetRowValue(query_hash, row, 'title')
    event_data.url = self._GetRowValue(query_hash, row, 'url')

    timestamp = self._GetRowValue(query_hash, row, 'dateAdded')
    if timestamp:
      date_time = dfdatetime_posix_time.PosixTimeInMicroseconds(
          timestamp=timestamp)
      event = time_events.DateTimeValuesEvent(
          date_time, definitions.TIME_DESCRIPTION_ADDED)
      parser_mediator.ProduceEventWithEventData(event, event_data)

    timestamp = self._GetRowValue(query_hash, row, 'lastModified')
    if timestamp:
      date_time = dfdatetime_posix_time.PosixTimeInMicroseconds(
          timestamp=timestamp)
      event = time_events.DateTimeValuesEvent(
          date_time, definitions.TIME_DESCRIPTION_MODIFICATION)
      parser_mediator.ProduceEventWithEventData(event, event_data)

  def ParseBookmarkFolderRow(
      self, parser_mediator, query, row, **unused_kwargs):
    """Parses a bookmark folder 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)

    title = self._GetRowValue(query_hash, row, 'title')

    event_data = FirefoxPlacesBookmarkFolderEventData()
    event_data.offset = self._GetRowValue(query_hash, row, 'id')
    event_data.query = query
    event_data.title = title or 'N/A'

    timestamp = self._GetRowValue(query_hash, row, 'dateAdded')
    if timestamp:
      date_time = dfdatetime_posix_time.PosixTimeInMicroseconds(
          timestamp=timestamp)
      event = time_events.DateTimeValuesEvent(
          date_time, definitions.TIME_DESCRIPTION_ADDED)
      parser_mediator.ProduceEventWithEventData(event, event_data)

    timestamp = self._GetRowValue(query_hash, row, 'lastModified')
    if timestamp:
      date_time = dfdatetime_posix_time.PosixTimeInMicroseconds(
          timestamp=timestamp)
      event = time_events.DateTimeValuesEvent(
          date_time, definitions.TIME_DESCRIPTION_MODIFICATION)
      parser_mediator.ProduceEventWithEventData(event, event_data)

  def ParseBookmarkRow(
      self, parser_mediator, query, row, **unused_kwargs):
    """Parses a bookmark 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)

    rev_host = self._GetRowValue(query_hash, row, 'rev_host')
    bookmark_type = self._GetRowValue(query_hash, row, 'type')

    event_data = FirefoxPlacesBookmarkEventData()
    event_data.host = rev_host or 'N/A'
    event_data.offset = self._GetRowValue(query_hash, row, 'id')
    event_data.places_title = self._GetRowValue(query_hash, row, 'places_title')
    event_data.query = query
    event_data.title = self._GetRowValue(query_hash, row, 'bookmark_title')
    event_data.type = self._BOOKMARK_TYPES.get(bookmark_type, 'N/A')
    event_data.url = self._GetRowValue(query_hash, row, 'url')
    event_data.visit_count = self._GetRowValue(query_hash, row, 'visit_count')

    timestamp = self._GetRowValue(query_hash, row, 'dateAdded')
    if timestamp:
      date_time = dfdatetime_posix_time.PosixTimeInMicroseconds(
          timestamp=timestamp)
      event = time_events.DateTimeValuesEvent(
          date_time, definitions.TIME_DESCRIPTION_ADDED)
      parser_mediator.ProduceEventWithEventData(event, event_data)

    timestamp = self._GetRowValue(query_hash, row, 'lastModified')
    if timestamp:
      date_time = dfdatetime_posix_time.PosixTimeInMicroseconds(
          timestamp=timestamp)
      event = time_events.DateTimeValuesEvent(
          date_time, definitions.TIME_DESCRIPTION_MODIFICATION)
      parser_mediator.ProduceEventWithEventData(event, event_data)

  def ParsePageVisitedRow(
      self, parser_mediator, query, row, cache=None, database=None,
      **unused_kwargs):
    """Parses a page visited 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.
      cache (Optional[SQLiteCache]): cache.
      database (Optional[SQLiteDatabase]): database.
    """
    query_hash = hash(query)

    from_visit = self._GetRowValue(query_hash, row, 'from_visit')
    hidden = self._GetRowValue(query_hash, row, 'hidden')
    rev_host = self._GetRowValue(query_hash, row, 'rev_host')
    typed = self._GetRowValue(query_hash, row, 'typed')

    # TODO: make extra conditional formatting.
    extras = []
    if from_visit:
      extras.append('visited from: {0:s}'.format(
          self._GetUrl(from_visit, cache, database)))

    if hidden == '1':
      extras.append('(url hidden)')

    if typed == '1':
      extras.append('(directly typed)')
    else:
      extras.append('(URL not typed directly)')

    event_data = FirefoxPlacesPageVisitedEventData()
    event_data.host = self._ReverseHostname(rev_host)
    event_data.offset = self._GetRowValue(query_hash, row, 'id')
    event_data.query = query
    event_data.title = self._GetRowValue(query_hash, row, 'title')
    event_data.url = self._GetRowValue(query_hash, row, 'url')
    event_data.visit_count = self._GetRowValue(query_hash, row, 'visit_count')
    event_data.visit_type = self._GetRowValue(query_hash, row, 'visit_type')

    if extras:
      event_data.extra = extras

    timestamp = self._GetRowValue(query_hash, row, 'visit_date')
    if timestamp:
      date_time = dfdatetime_posix_time.PosixTimeInMicroseconds(
          timestamp=timestamp)
      event = time_events.DateTimeValuesEvent(
          date_time, definitions.TIME_DESCRIPTION_LAST_VISITED)
      parser_mediator.ProduceEventWithEventData(event, event_data)

  def _ReverseHostname(self, hostname):
    """Reverses the hostname and strips the leading dot.

    The hostname entry is reversed:
      moc.elgoog.www.
    Should be:
      www.google.com

    Args:
      hostname (str): reversed hostname.

    Returns:
      str: hostname without a leading dot.
    """
    if not hostname:
      return ''

    if len(hostname) <= 1:
      return hostname

    if hostname[-1] == '.':
      return hostname[::-1][1:]

    return hostname[::-1][0:]

  def _GetUrl(self, url_id, cache, database):
    """Retrieves an URL from a reference to an entry in the from_visit table.

    Args:
      url_id (str): identifier of the visited URL.
      cache (SQLiteCache): cache.
      database (SQLiteDatabase): database.

    Returns:
      str: URL and hostname.
    """
    url_cache_results = cache.GetResults('url')
    if not url_cache_results:
      result_set = database.Query(self.URL_CACHE_QUERY)

      cache.CacheQueryResults(
          result_set, 'url', 'id', ('url', 'rev_host'))
      url_cache_results = cache.GetResults('url')

    url, reverse_host = url_cache_results.get(url_id, ['', ''])

    if not url:
      return ''

    hostname = self._ReverseHostname(reverse_host)
    return '{0:s} ({1:s})'.format(url, hostname)


class FirefoxDownloadsPlugin(interface.SQLitePlugin):
  """Parses a Firefox downloads file.

  The Firefox downloads history is stored in a SQLite database file named
  downloads.sqlite.
  """

  NAME = 'firefox_downloads'
  DESCRIPTION = 'Parser for Firefox downloads SQLite database files.'

  # Define the needed queries.
  QUERIES = [
      (('SELECT moz_downloads.id, moz_downloads.name, moz_downloads.source, '
        'moz_downloads.target, moz_downloads.tempPath, '
        'moz_downloads.startTime, moz_downloads.endTime, moz_downloads.state, '
        'moz_downloads.referrer, moz_downloads.currBytes, '
        'moz_downloads.maxBytes, moz_downloads.mimeType '
        'FROM moz_downloads'),
       'ParseDownloadsRow')]

  SCHEMAS = [
      {'moz_downloads':
       'CREATE TABLE moz_downloads (id INTEGER PRIMARY KEY, name TEXT, '
       'source TEXT, target TEXT, tempPath TEXT, startTime INTEGER, endTime '
       'INTEGER, state INTEGER, referrer TEXT, entityID TEXT, currBytes '
       'INTEGER NOT NULL DEFAULT 0, maxBytes INTEGER NOT NULL DEFAULT -1, '
       'mimeType TEXT, preferredApplication TEXT, preferredAction INTEGER '
       'NOT NULL DEFAULT 0, autoResume INTEGER NOT NULL DEFAULT 0)'}]

  # The required tables.
  REQUIRED_TABLES = frozenset(['moz_downloads'])

  def ParseDownloadsRow(
      self, parser_mediator, query, row, **unused_kwargs):
    """Parses a downloads 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 = FirefoxDownloadEventData()
    event_data.full_path = self._GetRowValue(query_hash, row, 'target')
    event_data.mime_type = self._GetRowValue(query_hash, row, 'mimeType')
    event_data.name = self._GetRowValue(query_hash, row, 'name')
    event_data.offset = self._GetRowValue(query_hash, row, 'id')
    event_data.query = query
    event_data.received_bytes = self._GetRowValue(query_hash, row, 'currBytes')
    event_data.referrer = self._GetRowValue(query_hash, row, 'referrer')
    event_data.temporary_location = self._GetRowValue(
        query_hash, row, 'tempPath')
    event_data.total_bytes = self._GetRowValue(query_hash, row, 'maxBytes')
    event_data.url = self._GetRowValue(query_hash, row, 'source')

    timestamp = self._GetRowValue(query_hash, row, 'startTime')
    if timestamp:
      date_time = dfdatetime_posix_time.PosixTimeInMicroseconds(
          timestamp=timestamp)
      event = time_events.DateTimeValuesEvent(
          date_time, definitions.TIME_DESCRIPTION_START)
      parser_mediator.ProduceEventWithEventData(event, event_data)

    timestamp = self._GetRowValue(query_hash, row, 'endTime')
    if timestamp:
      date_time = dfdatetime_posix_time.PosixTimeInMicroseconds(
          timestamp=timestamp)
      event = time_events.DateTimeValuesEvent(
          date_time, definitions.TIME_DESCRIPTION_END)
      parser_mediator.ProduceEventWithEventData(event, event_data)


sqlite.SQLiteParser.RegisterPlugins([
    FirefoxHistoryPlugin, FirefoxDownloadsPlugin])
