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# -*- coding: utf-8 -*-
## This file is part of Gajim.
##
## Gajim 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; version 3 only.
##
## Gajim 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 Gajim. If not, see <http://www.gnu.org/licenses/>.
##
'''
Block some incoming messages
:author: Yann Leboulanger <asterix@lagaule.org>
:since: 16 August 2012
:copyright: Copyright (2012) Yann Leboulanger <asterix@lagaule.org>
:license: GPLv3
'''
from gi.repository import Gtk
import nbxmpp
from common import gajim, ged
from plugins import GajimPlugin
from plugins.helpers import log, log_calls
from plugins.gui import GajimPluginConfigDialog
class AntiSpamPlugin(GajimPlugin):
@log_calls('AntiSpamPlugin')
def init(self):
self.description = _('Allows to block some kind of incoming messages')
self.config_dialog = AntiSpamPluginConfigDialog(self)
self.gui_extension_points = {
}
self.events_handlers = {
'atom-entry-received': (ged.POSTCORE,
self._nec_atom_entry_received),
'message-received': (ged.PRECORE,
self._nec_message_received_received),
'decrypted-message-received': (ged.PRECORE,
self._nec_decrypted_message_received_received),
'subscribe-presence-received': (ged.POSTCORE,
self._nec_subscribe_presence_received),
'message-outgoing': (ged.OUT_PRECORE,
self._nec_message_outgoing)
}
self.config_default_values = {
'block_pubsub_messages': (False, 'If True, Gajim will block incoming messages from pubsub.'),
'disable_xhtml_muc': (False, ''),
'disable_xhtml_pm': (False, ''),
'block_subscription_requests': (False, ''),
'msgtxt_limit': (-1, ''),
'msgtxt_question': ('Please answer: 12 x 12 =', ''),
'msgtxt_answer': ('', ''),
'antispam_for_conference': (False, ''),
'conference_white_list': ([], ''), # conference private chat jid's
}
# List of outgoing jid's
# Needs to avoid chat of two anti spam plugins
# Contain all jid's where are you initiate a chat
self.outgoing_jids = []
@log_calls('AntiSpamPlugin')
def _nec_atom_entry_received(self, obj):
if self.config['block_pubsub_messages']:
log.info('discarding pubdubd message')
return True
@log_calls('AntiSpamPlugin')
def _nec_message_received_received(self, obj):
if self.config['disable_xhtml_muc'] and obj.mtype == 'groupchat':
self.remove_xhtml(obj)
if self.config['disable_xhtml_pm'] and obj.gc_control and \
obj.resource and obj.mtype == 'chat':
self.remove_xhtml(obj)
return False
@log_calls('AntiSpamPlugin')
def _nec_decrypted_message_received_received(self, obj):
if not obj.msgtxt:
return False
if self._nec_decrypted_message_received_question(obj):
return True
limit = self.config['msgtxt_limit']
if limit > -1 and len(obj.msgtxt) > limit:
return True
return False
@log_calls('AntiSpamPlugin')
def _nec_subscribe_presence_received(self, obj):
if self.config['block_subscription_requests'] and \
not gajim.contacts.get_contacts(obj.conn.name, obj.jid):
log.info('discarding subscription request from %s' % obj.jid)
return True
@log_calls('AntiSpamPlugin')
def _nec_decrypted_message_received_question(self, obj):
if obj.mtype != 'chat' and obj.mtype != 'normal':
return False
tjid = obj.jid if obj.mtype == 'normal' else obj.fjid
if tjid in self.outgoing_jids:
return False
answer = self.config['msgtxt_answer']
if len(answer) == 0:
return False
block_conference = self.config['antispam_for_conference']
is_conference = gajim.contacts.is_gc_contact(obj.conn.name, obj.fjid)
if not block_conference and is_conference:
return False
jid = obj.jid if not is_conference else obj.fjid
# If we receive conference privat message or direct message from unknown user than
# anti spam question will send in background mode, without any notification for us
# There are two methods to see who wrote you and not passed filter:
# 1. Using XML console
# 2. Running Gajim with log info messages and see logs (probably gajim.log file)
if is_conference or not gajim.contacts.get_contacts(obj.conn.name, jid):
if not self.contain_answer(obj.msgtxt, answer):
if is_conference and jid in self.config['conference_white_list']:
return False
self.send_question(obj, jid)
return True
else:
if is_conference and jid not in self.config['conference_white_list']:
self.config['conference_white_list'].append(jid)
# Need to save because 'append' method does not implement __setitem__ method
self.config.save()
return False
@log_calls('AntiSpamPlugin')
def _nec_message_outgoing(self, obj):
if obj.type_ != 'chat' and obj.type_ != 'normal':
return
if isinstance(obj.jid, list):
for i in obj.jid:
if i not in self.outgoing_jids:
self.outgoing_jids.append(i)
else:
if obj.jid not in self.outgoing_jids:
self.outgoing_jids.append(obj.jid)
def send_question(self, obj, jid):
if obj.mtype != 'chat' and obj.mtype != 'normal':
log.info('Anti_spam wrong message type: %s', obj.mtype)
return
# only for 'chat' messages
if obj.receipt_request_tag and obj.mtype == 'chat':
receipt = nbxmpp.Message(to=obj.fjid, typ='chat')
receipt.setTag('received', namespace='urn:xmpp:receipts', attrs={'id': obj.id_})
if obj.thread_id:
receipt.setThread(obj.thread_id)
gajim.connections[obj.conn.name].connection.send(receipt, now=True)
question = self.config['msgtxt_question']
log.info('Anti_spam enabled for %s, question: %s', jid, question)
message = _('Antispam enabled. Please answer the question. The message must only ' + \
'contain the answer. (Messages sent before the correct answer, will be lost): ') \
+ question
if obj.mtype == 'chat':
stanza = nbxmpp.Message(to=jid, body=message, typ=obj.mtype)
else: # for 'normal' type
stanza = nbxmpp.Message(to=jid, body=message, subject='Antispam enabled', typ=obj.mtype)
gajim.connections[obj.conn.name].connection.send(stanza, now=True)
def contain_answer(self, msg, answer):
return answer in msg.split('\n')
def remove_xhtml(self, obj):
html_node = obj.stanza.getTag('html')
if html_node:
obj.stanza.delChild(html_node)
class AntiSpamPluginConfigDialog(GajimPluginConfigDialog):
def init(self):
self.GTK_BUILDER_FILE_PATH = self.plugin.local_file_path(
'config_dialog.ui')
self.xml = Gtk.Builder()
self.xml.set_translation_domain('gajim_plugins')
self.xml.add_objects_from_file(self.GTK_BUILDER_FILE_PATH,
['anti_spam_config_vbox'])
self.config_vbox = self.xml.get_object('anti_spam_config_vbox')
self.get_child().pack_start(self.config_vbox, True, True, 0)
self.block_pubsub_messages_checkbutton = self.xml.get_object(
'block_pubsub_messages_checkbutton')
self.xml.connect_signals(self)
def on_run(self):
self.block_pubsub_messages_checkbutton.set_active(self.plugin.config[
'block_pubsub_messages'])
widget = self.xml.get_object('disable_xhtml_muc_checkbutton')
widget.set_active(self.plugin.config['disable_xhtml_muc'])
widget = self.xml.get_object('disable_xhtml_pm_checkbutton')
widget.set_active(self.plugin.config['disable_xhtml_pm'])
widget = self.xml.get_object('block_subscription_requests_checkbutton')
widget.set_active(self.plugin.config['block_subscription_requests'])
widget = self.xml.get_object('message_size_limit_entry')
widget.set_text(str(self.plugin.config['msgtxt_limit']))
widget = self.xml.get_object('antispam_question')
widget.set_text(str(self.plugin.config['msgtxt_question']))
widget = self.xml.get_object('antispam_answer')
widget.set_text(str(self.plugin.config['msgtxt_answer']))
widget = self.xml.get_object('antispam_for_conference')
widget.set_active(self.plugin.config['antispam_for_conference'])
def on_block_pubsub_messages_checkbutton_toggled(self, button):
self.plugin.config['block_pubsub_messages'] = button.get_active()
def on_disable_xhtml_muc_checkbutton_toggled(self, button):
self.plugin.config['disable_xhtml_muc'] = button.get_active()
def on_disable_xhtml_pm_checkbutton_toggled(self, button):
self.plugin.config['disable_xhtml_pm'] = button.get_active()
def on_block_subscription_requests_checkbutton_toggled(self, button):
self.plugin.config['block_subscription_requests'] = button.get_active()
def on_message_size_limit_entry_changed(self, entry):
try:
self.plugin.config['msgtxt_limit'] = int(entry.get_text())
except Exception:
pass
def on_message_question_entry_changed(self, entry):
try:
self.plugin.config['msgtxt_question'] = entry.get_text()
except Exception:
pass
def on_message_answer_entry_changed(self, entry):
try:
self.plugin.config['msgtxt_answer'] = entry.get_text()
except Exception:
pass
def on_antispam_for_conference_checkbutton_toggled(self, button):
self.plugin.config['antispam_for_conference'] = button.get_active()
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