# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
# Mobius Forensic Toolkit
# Copyright (C) 2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018 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 pymobius.forensics.vfs
import pymobius.forensics.registry.installed_programs
from pymobius.forensics.registry import *

import pymobius.p2p
import pymobius.p2p.application
from pymobius.p2p.local_file import *
import pymobius.p2p.shareaza.decoder_sd

import decoder_ac_searchstrings_dat
import decoder_cancelled_met
import decoder_ip_to_country
import decoder_key_index_dat
import decoder_known_met
import decoder_part_met
import decoder_part_met_txtsrc
import decoder_preferences_dat
import decoder_preferences_ini
import decoder_preferenceskad_dat
import decoder_stored_searches_met
import CTag

import mobius
import urllib

# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
# Versions examined: Emule 0.50a and DreaMule 3.2
#
# Emule main forensic files:
# @see http://www.emule-project.net/home/perl/help.cgi?l=1&rm=show_topic&topic_id=106
#
# . AC_SearchStrings.dat: Stores search strings
#
# . Cancelled.met: Files cancelled before completing downloading
#
# . Clients.met: Credit control file. Control credits of each peer (dl and ul)
#
# . Downloads.txt/bak: Summary of .part.met files (part name and url)
#
# . Known.met: Shared files, downloading files, downloaded files
#
# . Preferences.dat: Stores the user GUID for eDonkey network
#
# . PreferencesKad.dat: Stores Kademlia network client ID
#
# . Sharedir.dat: Stores the paths to all shared directories
#
# . StoredSearches.met: Stores open searches (ongoing searches)
#
# . *.part.met: information about a file being downloaded (not in known.met)
#
# DreaMule forensic files:
# . *.part.met.txtsrc: list of sources, with IP and expiration date/time
#
# Kademlia forensic files:
# . key_index.dat: stores a chunk of Kademlia's Distributed Hash Table,
#   including search hash value, hits (files) and peers sharing those files
#
# All Date/Times are stored in Coordinated Universal Time (UTC).
# @see https://msdn.microsoft.com/pt-br/library/windows/desktop/ms724397(v=vs.85).aspx
#
# According to eMule Homepage: "Your Incoming and Temporary directory are always shared"
# @see https://www.emule-project.net/home/perl/help.cgi?l=1&topic_id=112&rm=show_topic
# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
# @brief Generic dataholder
# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
class dataholder (object):
  pass

# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
# @brief iterate through user folders
# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
def iter_users_folders (vfs):
  for root in vfs:
    users_folder = root.get_child_by_name ('Users', False)

    if not users_folder:
      users_folder = root.get_child_by_name ('Documents and Settings', False)

    if users_folder:
      for child in users_folder.get_children ():
        if child.is_folder ():
          username = child.name
          yield username, child

# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
# @brief Retrieves Emule P2P activity data
# @author Eduardo Aguiar
# This function is planned to run in an independent thread. The idea here
# is to gather all activity data and only then write data to the model
# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
def retrieve (model):
  ant = Ant (model)
  ant.run ()

# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
# @brief forensics: P2P Emule
# @author Eduardo Aguiar
# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
class Ant (object):

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief initialize object
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __init__ (self, model):
    self.__model = model
    self.__item = model.item

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief run
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def run (self):

    # create local data model
    self.__data = dataholder ()
    self.__data.accounts = []
    self.__data.searches = []
    self.__data.local_files = []
    self.__data.remote_files = []

    # create app
    self.__data.application = pymobius.p2p.application.application ()
    self.__data.application.id = 'emule'
    self.__data.application.name = 'Emule'

    # retrieve data
    self.__retrieve_registry_data ()
    self.__retrieve_app_data ()
    self.__normalize_data ()

    # update P2P model
    self.__model.applications.append (self.__data.application)
    self.__model.accounts += self.__data.accounts
    self.__model.searches += self.__data.searches
    self.__model.local_files += self.__data.local_files
    self.__model.remote_files += self.__data.remote_files

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief retrieve registry data
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __retrieve_registry_data (self):
    ant = pymobius.forensics.registry.main.Ant (self.__item)

    for registry in ant.get_data ():
      for program in pymobius.forensics.registry.installed_programs.get (registry):
        program_name = program.display_name.lower ()
        
        if program_name.startswith ('emule plus '):
          self.__data.application.versions.add (program.display_name[6:])

        elif program_name.startswith ('emule '):
          self.__data.application.versions.add (program.display_name[6:])

        elif program_name.startswith ('dreamule '):
          self.__data.application.versions.add (program.display_name)

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief retrieve data from disk files
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __retrieve_app_data (self):
    self.__ip_table = None

    # get item VFS
    vfs = pymobius.forensics.vfs.get_item_vfs (self.__item)
    if not vfs:
      raise Exception, "Datasource is not available"

    # decode ":/Program Files/Emule/Config"
    for root in vfs:
      folder = root.get_child_by_path ('Program Files/Emule/Config', False)
      if folder:
        self.__retrieve_program_files_folder (folder)

    # decode "<USER_FOLDER>/"
    for username, user_folder in iter_users_folders (vfs):
      self.__incoming_dir = None
      self.__temp_dir = None

      folder = \
         user_folder.get_child_by_path ('AppData/Local/eMule', False) or \
         user_folder.get_child_by_path ('Application Data/eMule', False)

      if folder:
        self.__retrieve_appdatalocal (username, folder)

      # Incoming dir
      if self.__incoming_dir:
        path = self.__incoming_dir[3:].replace ('\\', '/')
        folder = root.get_child_by_path (path, False)

        if folder:
          self.__retrieve_part_control_files (folder, username)

      # Temp dir
      if self.__temp_dir:
        path = self.__temp_dir[3:].replace ('\\', '/')
        folder = root.get_child_by_path (path, False)

        if folder:
          self.__retrieve_part_control_files (folder, username)

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Retrieve program files folder
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __retrieve_program_files_folder (self, folder):

    for f in folder.get_children ():
      fname = f.name.lower ()

      # Ignore reallocated entries
      if f.is_reallocated:
        pass

      # ip-to-country.csv
      elif fname == 'ip-to-country.csv':
        self.__ip_table = decoder_ip_to_country.retrieve (f)
        pymobius.p2p.set_handled (self.__item, f)

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Retrieve data from APPDATALOCAL folder
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __retrieve_appdatalocal (self, username, folder):

    # config folder
    config_folder = folder.get_child_by_name ('config', False)
    if config_folder:
    
      # retrieve 'preferences.ini' first
      f = config_folder.get_child_by_name ('preferences.ini', False)
      self.__retrieve_preferences_ini (self.__item, self.__data, f, username)

      # retrieve other files
      self.__retrieve_config_files (config_folder, username)

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Retrieve data from config files
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __retrieve_config_files (self, folder, username):
    idx = 0

    for f in folder.get_children ():
      fname = f.name.lower ()

      # Ignore reallocated entries
      if f.is_reallocated:
        pass

      # AC_SearchStrings.dat
      elif fname == 'ac_searchstrings.dat':
        self.__retrieve_ac_searchstrings_dat (self.__item, self.__data, f, username)

      # AC_SearchMetURLs.dat
      elif fname == 'ac_servermeturls.dat':
        pymobius.p2p.set_handled (self.__item, f)

      # Cancelled.met
      elif fname == 'cancelled.met':
        self.__retrieve_cancelled_met (self.__item, self.__data, f, username)

      # Clients.met
      elif fname == 'clients.met':
        pymobius.p2p.set_handled (self.__item, f)

      # downloads.bak
      elif fname == 'downloads.bak':
        pymobius.p2p.set_handled (self.__item, f)

      # downloads.txt
      elif fname == 'downloads.txt':
        pymobius.p2p.set_handled (self.__item, f)

      # ip-to-country.csv
      elif fname == 'ip-to-country.csv':
        self.__ip_table = decoder_ip_to_country.retrieve (f)
        pymobius.p2p.set_handled (self.__item, f)

      # key_index.dat
      elif fname == 'key_index.dat':
        self.__retrieve_key_index_dat (self.__item, self.__data, f, username)

      # Known.met
      elif fname == 'known.met':
        self.__retrieve_known_met (self.__item, self.__data, f, username)

      # Known2_64.met
      elif fname == 'known2_64.met':
        pymobius.p2p.set_handled (self.__item, f)

      # load_index.dat
      elif fname == 'load_index.dat':
        pymobius.p2p.set_handled (self.__item, f)

      # Nodes.dat
      elif fname == 'nodes.dat':
        pymobius.p2p.set_handled (self.__item, f)

      # Preferences.dat
      elif fname == 'preferences.dat':
        self.__retrieve_preferences_dat (self.__item, self.__data, f, username)

      # Preferences.ini
      elif fname == 'preferences.ini':
        pass		# already handled

      # PreferencesKad.dat
      elif fname == 'preferenceskad.dat':
        self.__retrieve_preferenceskad_dat (self.__item, self.__data, f, username)

      # src_index.dat
      elif fname == 'src_index.dat':
        pymobius.p2p.set_handled (self.__item, f)

      # StoredSearches.met
      elif fname == 'storedsearches.met':
        self.__retrieve_stored_searches_met (self.__item, self.__data, f, username)	      

      else:
        t = 'file' if f.is_file () else 'folder'
        mobius.core.log ('p2p.emule: Unhandled Config/%s %s' % (f.name, t))

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Retrieve data from .part.* control files
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __retrieve_part_control_files (self, folder, username):
    if not folder or not folder.is_folder ():
      return

    # decode .part.met.txtsrc files first... (DreaMule only)
    sources = {}

    for f in folder.get_children ():
      path = f.path.lower ()

      if path.endswith ('.part.met.txtsrc'):
        peers = decoder_part_met_txtsrc.decode (f)

        if peers:
          part_name = f.name[:-7]
          sources[part_name] = peers

    # decode .part.met files
    part_met = set ()

    for f in folder.get_children ():
      path = f.path.lower ()

      if path.endswith ('.part.met'):
        source_list = sources.get (f.name, [])
        decoder_part_met.retrieve (self.__item, self.__data, f, source_list, username)
        part_met.add (path)

    # handle other control files
    for f in folder.get_children ():
      path = f.path.lower ()

      if path.endswith ('.part.met'):
        pass	# already handled

      elif path.endswith ('.part.met.txtsrc'):
        pass	# already handled

      elif path.endswith ('.part.met.bak'):
        if path[:-4] not in part_met:
          source_list = sources.get (f.name, [])
          decoder_part_met.retrieve (self.__item, self.__data, f, source_list, username)
        else:
          pymobius.p2p.set_handled (self.__item, f)

      elif path.endswith ('.part.stats'):
        pymobius.p2p.set_handled (self.__item, f)
        
      elif path.endswith ('.sd'):	# Shareaza control file
        pymobius.p2p.shareaza.decoder_sd.retrieve (self.__item, self.__data, f, None)

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Retrieve data from AC_SearchStrings.dat
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __retrieve_ac_searchstrings_dat (self, item, model, f, username):
    data = decoder_ac_searchstrings_dat.decode (f)
    if not data:
      return

    for text in data:
      search = pymobius.p2p.search.search ()
      search.app_id = 'emule'
      search.app = 'Emule'
      search.username = username
      search.text = text
      search.add_metadata ('Application', 'Emule')
      search.add_metadata ('Search Term', text)
      search.add_metadata ('AC_SearchStrings.dat path', f.path)
      model.searches.append (search)

    # set file handled
    pymobius.p2p.set_handled (item, f)

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Retrieve data from cancelled.met
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __retrieve_cancelled_met (self, item, model, f, username):
    data = decoder_cancelled_met.decode (f)
    if not data:
      return

    # set file handled
    pymobius.p2p.set_handled (item, f)

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Retrieve data from key_index.dat
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __retrieve_key_index_dat (self, item, model, f, username):
    data = decoder_key_index_dat.decode (f)
    if not data:
      return

    for key in data.keys:
      for source in key.sources:
        for name in source.names:
          for ip, timestamp in name.ips:
            rf = pymobius.p2p.remote_file.remote_file ()
            rf.username = username
            rf.timestamp = timestamp
            rf.app_id = 'emule'
            rf.app = 'Emule'

            rf.set_hash ('ed2k', source.hash_ed2k)
            rf.add_metadata ('key_index.dat path', f.path)

            # process tags
            pymobius.p2p.emule.CTag.set_file_attributes (rf, name.tags)

            # peer data
            rf.peer.ip = ip

            # add to model
            model.remote_files.append (rf)

    # set file handled
    pymobius.p2p.set_handled (item, f)

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Retrieve data from known.met
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __retrieve_known_met (self, item, model, f, username):
    data = decoder_known_met.decode (f)
    if not data:
      return

    # process entries
    for entry in data.entries:
      lf = self.__new_local_file_from_cknowfile (entry)
      lf.username = username

      # path
      if lf.name and self.__incoming_dir:
        lf.path = self.__incoming_dir + '\\' + lf.name

      lf.add_metadata ('Known.met path', f.path)
      model.local_files.append (lf)

    # set file handled
    pymobius.p2p.set_handled (item, f)

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Retrieve data from preferences.dat
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __retrieve_preferences_dat (self, item, model, f, username):
    data = decoder_preferences_dat.decode (f)
    if not data:
      return
  
    # create account
    account = pymobius.p2p.account.account ()
    account.username = username
    account.app_id = 'emule'
    account.app = 'Emule'
    account.network = 'eDonkey'
    account.guid = data.guid
    model.accounts.append (account)

    # set file handled
    pymobius.p2p.set_handled (item, f)

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Retrieve data from preferences.ini
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __retrieve_preferences_ini (self, item, model, f, username):
    self.__incoming_dir = None
    self.__temp_dir = None
    
    if not f:
      return

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

    self.__incoming_dir = data.incoming_dir
    self.__temp_dir = data.temp_dir

    # set file handled
    pymobius.p2p.set_handled (item, f)

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Retrieve data from preferencesKad.dat
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __retrieve_preferenceskad_dat (self, item, model, f, username):
    data = decoder_preferenceskad_dat.decode (f)
    if not data:
      return

    # create account
    account = pymobius.p2p.account.account ()
    account.username = username
    account.app_id = 'emule'
    account.app = 'Emule'
    account.network = 'Kademlia'
    account.guid = data.client_id.upper ()
    model.accounts.append (account)

    # set file handled
    pymobius.p2p.set_handled (item, f)

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Retrieve data from StoredSearches.met
  # @todo Find a suitable timestamp for cfiles, to add them to remote files
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __retrieve_stored_searches_met (self, item, model, f, username):
    data = decoder_stored_searches_met.decode (f)
    if not data:
      return
    
    for csearch in data.csearches:
      search = pymobius.p2p.search.search ()
      search.app_id = 'emule'
      search.app = 'Emule'
      search.username = username
      search.text = csearch.expression

      # add remote files
      for cfile in csearch.files:
        info = CTag.get_metadata (cfile.tags)

        rf = pymobius.p2p.remote_file.remote_file ()
        rf.app_id = 'emule'
        rf.app = 'Emule'
        rf.name = info.get ('name')
        rf.size = info.get ('size')
        rf.username = username

        # hashes (ED2K, AICH)
        rf.set_hash ('ed2k', cfile.hash_ed2k)
        if 'hash_aich' in info:
          rf.set_hash ('aich', info.get ('hash_aich'))

        # tags
        self.__set_file_attributes (rf, info)

        # peer data
        if cfile.user_ip != '0.0.0.0':
          rf.peer.ip = cfile.user_ip
          rf.peer.port = cfile.user_port

        rf.add_metadata ('Search Term', search.text)
        search.add_file (rf)

      # add metadata
      search.add_metadata ('Case Item', item.name)
      search.add_metadata ('Application', 'Emule')
      search.add_metadata ('Search ID', '%08x' % csearch.search_id)
      search.add_metadata ('Search Term', csearch.expression)
      search.add_metadata ('Special Title', csearch.special_title)
      search.add_metadata ('Filetype', csearch.filetype)
      search.add_metadata ('Hits', search.get_file_count ())
      search.add_metadata ('StoredSearches.met path', f.path)

      # add to search list
      model.searches.append (search)

    # set file handled
    pymobius.p2p.set_handled (item, f)
    
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief Create new local file from CKnownFile structure
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __new_local_file_from_cknowfile (self, entry):

    # get info from CTags
    info = CTag.get_metadata (entry.tags)

    # create local files
    f = local_file ()
    f.app_id = 'emule'
    f.app = 'Emule'
    f.name = info.get ('name')
    f.size = info.get ('size', 0)

    # flags
    f.flag_shared = STATE_ALWAYS
    f.flag_corrupted = STATE_YES if info.get ('corrupted_parts') else STATE_NO      
    f.flag_downloaded = STATE_YES
    f.flag_uploaded = STATE_YES if info.get ('uploaded_bytes') > 0 or info.get ('times_accepted', 0) > 0 else STATE_NO
    f.flag_completed = STATE_YES	# @see CPartFile::PerformFileCompleteEnd

    # hashes (ED2K, AICH)
    f.set_hash ('ed2k', entry.hash_ed2k)
    if 'hash_aich' in info:
      f.set_hash ('aich', info.get ('hash_aich'))

    # metadata
    self.__set_file_attributes (f, info)

    return f

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief set file attributes from tags
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __set_file_attributes (self, f, info):

    def add_metadata (f, name, value):
      if value != None:
        f.add_metadata (name, value)

    f.name = info.get ('name')
    f.size = info.get ('size', -1)

    add_metadata (f, 'File type', info.get ('filetype'))
    add_metadata (f, 'File format', info.get ('fileformat'))
    add_metadata (f, 'Last seen complete date/time (UTC)', info.get ('last_seen_time'))
    add_metadata (f, '.part file path', info.get ('part_path'))
    add_metadata (f, 'Bytes actually downloaded', info.get ('bytes_downloaded'))
    add_metadata (f, 'Description', info.get ('description'))
    add_metadata (f, 'Version', info.get ('version'))
    add_metadata (f, '.part file name', info.get ('part_name'))
    add_metadata (f, 'Sources', info.get ('sources'))
    add_metadata (f, 'Download priority', info.get ('dl_priority'))
    add_metadata (f, 'Upload priority', info.get ('ul_priority'))
    add_metadata (f, 'Compression gain in bytes', info.get ('compression_gain'))
    add_metadata (f, 'Corrupted loss in bytes', info.get ('corrupted_loss'))
    add_metadata (f, 'KAD last published date/time (UTC)', info.get ('kad_last_published_time'))
    add_metadata (f, 'Flags', info.get ('flags'))
    add_metadata (f, 'Download active time', info.get ('download_active_time'))
    add_metadata (f, 'Complete sources', info.get ('complete_sources'))
    add_metadata (f, 'Last shared date/time (UTC)', info.get ('last_shared_time'))
    add_metadata (f, 'Times requested', info.get ('times_requested'))
    add_metadata (f, 'Times accepted', info.get ('times_accepted'))
    add_metadata (f, 'Category', info.get ('category'))
    add_metadata (f, 'Max sources', info.get ('max_sources'))
    add_metadata (f, 'Last data update date/time (UTC)', info.get ('last_update_time'))
    add_metadata (f, 'Media artist', info.get ('media_artist'))
    add_metadata (f, 'Media album', info.get ('media_album'))
    add_metadata (f, 'Media title', info.get ('media_title'))
    add_metadata (f, 'Media length', info.get ('media_length'))
    add_metadata (f, 'Media bitrate', info.get ('media_bitrate'))
    add_metadata (f, 'Media Codec', info.get ('media_codec'))
    add_metadata (f, 'File comment', info.get ('file_comment'))
    add_metadata (f, 'File rating', info.get ('file_rating'))

    # other metadata
    value = info.get ('uploaded_bytes', 0)
    if value > 0:
      f.add_metadata ('Bytes uploaded', value)

    value = info.get ('not_counted_uploaded_bytes', 0)
    if value > 0:
      f.add_metadata ('Bytes uploaded (not counted)', value)

  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  # @brief normalize retrieved data
  # =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
  def __normalize_data (self):

    # remove duplicated search entries, preferring searches with len (files) > 0
    hit_searches = set ((s.text for s in self.__data.searches if s.has_files ()))
    self.__data.searches = [ s for s in self.__data.searches if s.has_files () or s.text not in hit_searches ]

    # add country to remote_files, when possible
    if self.__ip_table:
      for f in self.__data.remote_files:
        if f.peer.ip:
          f.peer.country_code, f.peer.country = self.__ip_table.get (f.peer.ip)

    # add URL to remote_files
    for f in self.__data.remote_files:
      if not f.url:
        f.url = 'ed2k://|file|%s|%d|%s|/' % (urllib.quote (f.name), f.size, f.get_hash ('ed2k'))

    # sort and remove duplicated remote files
    remote_files = [ (f.timestamp, f) for f in self.__data.remote_files ]
    timestamp, peer_ip, size, name = None, None, None, None
    self.__data.remote_files = []

    for timestamp, f in sorted (remote_files):
      if (timestamp, peer_ip, size, name) != (f.timestamp, f.peer.ip, f.size, f.name):
        self.__data.remote_files.append (f)
        timestamp, peer_ip, size, name = f.timestamp, f.peer.ip, f.size, f.name
