# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
# Mobius Forensic Toolkit
# Copyright (C) 2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018,2019,2020,2021,2022 Eduardo Aguiar
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any later
# version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
# Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
import copy
import mobius
import pymobius
from . import decoder_dht_dat
from . import decoder_resume_dat
from . import decoder_settings_dat
from . import decoder_torrent

APP_ID = 'utorrent'
APP_NAME = 'µTorrent'

# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
# @brief uTorrent Profile class
# @author Eduardo Aguiar
# @see https://www.forensicfocus.com/articles/forensic-analysis-of-the-%CE%BCtorrent-peer-to-peer-client-in-windows/
# @see https://robertpearsonblog.wordpress.com/2016/11/10/utorrent-forensic-artifacts/
# @see https://robertpearsonblog.wordpress.com/2016/11/11/utorrent-and-windows-10-forensic-nuggets-of-info/
# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
class Profile (object):

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Initialize object
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __init__ (self, folder, item):
    self.__folder = folder
    self.__item = item

    # set profile attributes
    self.name = folder.name
    self.path = mobius.io.to_win_path (folder.path)
    self.folder = folder
    self.metadata = mobius.pod.map ()
    self.username = None
    self.app_id = APP_ID
    self.app_name = APP_NAME

    # set data attributes
    self.__configuration_loaded = False
    self.__files_loaded = False
    self.__dht_loaded = False
    self.__configuration = None
    self.__downloaded_files = []
    self.__uploaded_files = []
    self.__shared_files = []
    self.__local_files = []
    self.__remote_files = []
    self.__ip_addresses = []
    self.__accounts = []

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Get configuration
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def get_configuration (self):
    if not self.__configuration_loaded:
      self.__load_configuration ()

    return self.__configuration

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Get downloaded files
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def get_downloaded_files (self):
    if not self.__files_loaded:
      self.__load_files ()

    return self.__downloaded_files

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Get uploaded files
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def get_uploaded_files (self):
    if not self.__files_loaded:
      self.__load_files ()

    return self.__uploaded_files

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Get shared files
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def get_shared_files (self):
    if not self.__files_loaded:
      self.__load_files ()

    return self.__shared_files

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Get local files
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def get_local_files (self):
    if not self.__files_loaded:
      self.__load_files ()

    return self.__local_files

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Get remote files
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def get_remote_files (self):
    if not self.__files_loaded:
      self.__load_files ()

    return self.__remote_files

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Get IP addresses
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def get_ip_addresses (self):
    if not self.__dht_loaded:
      self.__load_dht_files ()

    return self.__ip_addresses

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Get accounts
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def get_accounts (self):
    if not self.__dht_loaded:
      self.__load_dht_files ()

    return self.__accounts

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Load configuration
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __load_configuration (self):

    # settings.dat
    f = self.folder.get_child_by_path ('settings.dat', False)

    if f and not f.is_reallocated ():
      self.__configuration = decoder_settings_dat.decode (f)

    # settings.dat.old      
    if not self.__configuration:
      f = self.folder.get_child_by_path ('settings.dat.old', False)

      if f and not f.is_reallocated ():
        self.__configuration = decoder_settings_dat.decode (f)

    self.__configuration_loaded = True
    
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Load files data
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __load_files (self):
    entries = {}

    # read resume.dat.old
    f = self.folder.get_child_by_path ('resume.dat.old', False)
    self.__load_resume_dat (f, entries)

    # read resume.dat
    f = self.folder.get_child_by_path ('resume.dat', False)
    self.__load_resume_dat (f, entries)

    # read torrent files
    files = []

    for f in self.folder.get_children ():
      if not f.is_reallocated () and f.name.endswith ('.torrent'):
        files += decoder_torrent.decode (f) or []

    # complete files info with resume.dat entries info
    for f in files:
      f.username = self.username
      f.profile_path = self.path
      f.app_id = APP_ID
      f.app_name = APP_NAME

      entry = entries.get (f.torrent_name)

      if entry:
        f.is_completed = entry.completed_time != None
        f.flag_shared = entry.seeded_seconds > 0
        f.flag_downloaded = entry.bytes_downloaded > 0
        f.flag_uploaded = entry.bytes_uploaded > 0
        f.added_time = entry.added_time
        f.completed_time = entry.completed_time
        f.metadata_time = entry.metadata_time
        f.last_seen_complete_time = entry.last_seen_complete_time
        f.download_url = entry.download_url
        f.caption = entry.caption
        f.peers = entry.peers
        f.metadata = entry.metadata
        f.resume_dat_path = entry.resume_dat_path
        f.resume_dat_modification_time = entry.resume_dat_modification_time
        
        if f.path:
          f.path = entry.path + '\\' + f.path
        else:
          f.path = entry.path

      else:
        f.is_completed = False
        f.flag_shared = False
        f.flag_downloaded = False
        f.flag_uploaded = False
        f.added_time = None
        f.completed_time = None
        f.metadata_time = None
        f.last_seen_complete_time = None
        f.download_url = None
        f.caption = None
        f.peers = []
        f.metadata = {}
        f.resume_dat_path = None
        f.resume_dat_modification_time = None
        f.path = f.path or f.name

    # files
    self.__downloaded_files = [ f for f in files if f.flag_downloaded ]
    self.__uploaded_files = [ f for f in files if f.flag_uploaded ]
    self.__shared_files = [ f for f in files if f.flag_shared ]
    self.__local_files = list (files)

    # remote files
    self.__remote_files = []

    for f in files:
      for ip, port in f.peers:
        rf = copy.copy (f)
        rf.ip = ip
        rf.port = port
        rf.timestamp = f.metadata_time
        rf.hashes = []
        rf.app_id = APP_ID
        rf.app_name = APP_NAME
        self.__remote_files.append (rf)

    # set files loaded
    self.__files_loaded = True

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Load files data from resume.dat file
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __load_resume_dat (self, f, entries):
    if not f or f.is_reallocated ():
      return

    resume_dat_entries = decoder_resume_dat.decode (f)
    if not resume_dat_entries:
      return

    # add file if it is either new or newer than existing file
    for e in resume_dat_entries:
      e_old = entries.get (e.name)

      if not e_old or e_old.metadata_time < e.metadata_time:
        entries[e.name] = e

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Load dht.dat
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __load_dht_files (self):

    # dht.dat.old      
    f = self.folder.get_child_by_path ('dht.dat.old', False)
    self.__load_dht_dat (f)

    # dht.dat
    f = self.folder.get_child_by_path ('dht.dat', False)
    self.__load_dht_dat (f)

    self.__dht_loaded = True

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Load dht.dat
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __load_dht_dat (self, f):

    # check if file is valid
    if not f or f.is_reallocated ():
      return

    data = decoder_dht_dat.decode (f)
    if not data:
      return

    # add ip address if it is different
    if data.ip and data.timestamp and all (a.ip != data.ip or a.timestamp != data.timestamp for a in self.__ip_addresses):
      ip_data = pymobius.Data ()
      ip_data.ip = data.ip
      ip_data.timestamp = data.timestamp
      ip_data.app_id = APP_ID
      ip_data.app_name = APP_NAME
      ip_data.dht_dat_path = mobius.io.to_win_path (f.path)
      ip_data.username = self.username
      self.__ip_addresses.append (ip_data)

    # add account if it is different
    if data.guid and all (a.guid != data.guid for a in self.__accounts):
      account = pymobius.Data ()
      account.guid = data.guid
      account.app_id = APP_ID
      account.app_name = APP_NAME
      account.timestamp = data.timestamp
      account.ip = data.ip
      account.username = self.username
      self.__accounts.append (account)
