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lxmf_distribution_group.py
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lxmf_distribution_group.py
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#!/usr/bin/env python3
##############################################################################################################
#
# Copyright (c) 2024 Sebastian Obele / obele.eu
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#
# This software uses the following software-parts:
# Reticulum, LXMF, NomadNet / Copyright (c) 2016-2022 Mark Qvist / unsigned.io / MIT License
#
##############################################################################################################
##############################################################################################################
# Include
#### System ####
import sys
import os
import time
import datetime
import argparse
import random
#### Config ####
import configparser
#### Variables ####
from collections import defaultdict
#### JSON ####
import json
import pickle
#### String ####
import string
#### Regex ####
import re
#### Search ####
import fnmatch
#### Process ####
import signal
import threading
#### Reticulum, LXMF ####
# Install: pip3 install rns lxmf
# Source: https://markqvist.github.io
import RNS
import LXMF
import RNS.vendor.umsgpack as msgpack
##############################################################################################################
# Globals
#### Global Variables - Configuration ####
NAME = "LXMF Distribution Group"
DESCRIPTION = "Server-Side group functions for LXMF based apps"
VERSION = "0.0.1 (2024-05-31)"
COPYRIGHT = "(c) 2024 Sebastian Obele / obele.eu"
PATH = os.path.expanduser("~")+"/.config/"+os.path.splitext(os.path.basename(__file__))[0]
PATH_RNS = None
#### Global Variables - System (Not changeable) ####
DATA = None
CONFIG = None
RNS_CONNECTION = None
LXMF_PEER = None
CONV_P2P = 0x01
CONV_GROUP = 0x02
CONV_BROADCAST = 0x03
CONV_DISTRIBUTION_GROUP = 0x04
MSG_FIELD_EMBEDDED_LXMS = 0x01
MSG_FIELD_TELEMETRY = 0x02
MSG_FIELD_TELEMETRY_STREAM = 0x03
MSG_FIELD_ICON_APPEARANCE = 0x04
MSG_FIELD_FILE_ATTACHMENTS = 0x05
MSG_FIELD_IMAGE = 0x06
MSG_FIELD_AUDIO = 0x07
MSG_FIELD_THREAD = 0x08
MSG_FIELD_COMMANDS = 0x09
MSG_FIELD_RESULTS = 0x0A
MSG_FIELD_GROUP = 0x0B
MSG_FIELD_TICKET = 0x0C
MSG_FIELD_EVENT = 0x0D
MSG_FIELD_RNR_REFS = 0x0E
MSG_FIELD_RENDERER = 0x0F
MSG_FIELD_CUSTOM_TYPE = 0xFB
MSG_FIELD_CUSTOM_DATA = 0xFC
MSG_FIELD_CUSTOM_META = 0xFD
MSG_FIELD_NON_SPECIFIC = 0xFE
MSG_FIELD_DEBUG = 0xFF
MSG_FIELD_ANSWER = 0xA0
MSG_FIELD_ATTACHMENT = 0xA1
MSG_FIELD_COMMANDS_EXECUTE = 0xA2
MSG_FIELD_COMMANDS_RESULT = 0xA3
MSG_FIELD_CONTACT = 0xA4
MSG_FIELD_DATA = 0xA5
MSG_FIELD_DELETE = 0xA6
MSG_FIELD_EDIT = 0xA7
MSG_FIELD_GROUP = 0xA8
MSG_FIELD_HASH = 0xA9
MSG_FIELD_ICON = 0xC1
MSG_FIELD_ICON_MENU = 0xAA
MSG_FIELD_ICON_SRC = 0xAB
MSG_FIELD_KEYBOARD = 0xAC
MSG_FIELD_KEYBOARD_INLINE = 0xAD
MSG_FIELD_LOCATION = 0xAE
MSG_FIELD_OWNER = 0xC0
MSG_FIELD_POLL = 0xAF
MSG_FIELD_POLL_ANSWER = 0xB0
MSG_FIELD_REACTION = 0xB1
MSG_FIELD_RECEIPT = 0xB2
MSG_FIELD_SCHEDULED = 0xB3
MSG_FIELD_SILENT = 0xB4
MSG_FIELD_SRC = 0xB5
MSG_FIELD_STATE = 0xB6
MSG_FIELD_STICKER = 0xB7
MSG_FIELD_TELEMETRY_DB = 0xB8
MSG_FIELD_TELEMETRY_PEER = 0xB9
MSG_FIELD_TELEMETRY_COMMANDS = 0xBA
MSG_FIELD_TEMPLATE = 0xBB
MSG_FIELD_TOPIC = 0xBC
MSG_FIELD_TYPE = 0xBD
MSG_FIELD_TYPE_FIELDS = 0xBE
MSG_FIELD_VOICE = 0xBF
##############################################################################################################
# LXMF Class
class LXMFPeer:
message_received_callback = None
message_notification_callback = None
message_notification_success_callback = None
message_notification_failed_callback = None
config_set_callback = None
def __init__(self, storage_path=None, identity_file="identity", identity=None, destination_name="lxmf", destination_type="delivery", announce_display_name="", announce_fields=None, announce_hidden=False, send_delay=0, method="auto", propagation_node=None, propagation_node_auto=False, propagation_node_active=None, stamps_enabled=False, stamps_required=False, stamps_cost=8, announce_startup=False, announce_startup_delay=0, announce_periodic=False, announce_periodic_interval=360, sync_startup=False, sync_startup_delay=0, sync_limit=8, sync_periodic=False, sync_periodic_interval=360):
self.storage_path = storage_path
self.identity_file = identity_file
self.identity = identity
self.destination_name = destination_name
self.destination_type = destination_type
self.aspect_filter = self.destination_name + "." + self.destination_type
self.announce_display_name = announce_display_name
self.announce_fields = announce_fields if announce_fields and len(announce_fields) > 0 else None
self.announce_hidden = announce_hidden
if stamps_enabled:
stamps_cost = int(stamps_cost)
if stamps_cost < 1 or stamps_cost > 255:
stamps_cost = None
else:
stamps_cost = None
if self.announce_fields:
self.announce_data = msgpack.packb([self.announce_display_name.encode("utf-8"), stamps_cost, self.announce_fields])
elif stamps_cost:
self.announce_data = msgpack.packb([self.announce_display_name.encode("utf-8"), stamps_cost])
else:
self.announce_data = self.announce_display_name.encode("utf-8")
log("LXMF - Configured announce data: " + str(self.announce_data), LOG_DEBUG)
self.send_delay = int(send_delay)
self.method = method
self.propagation_node = propagation_node
self.propagation_node_auto = propagation_node_auto
self.propagation_node_active = propagation_node_active
self.announce_startup = announce_startup
self.announce_startup_delay = int(announce_startup_delay)
if self.announce_startup_delay == 0:
self.announce_startup_delay = random.randint(5, 30)
self.announce_periodic = announce_periodic
self.announce_periodic_interval = int(announce_periodic_interval)
self.sync_startup = sync_startup
self.sync_startup_delay = int(sync_startup_delay)
if self.sync_startup_delay == 0:
self.sync_startup_delay = random.randint(5, 30)
self.sync_limit = int(sync_limit)
self.sync_periodic = sync_periodic
self.sync_periodic_interval = int(sync_periodic_interval)
if not self.storage_path:
log("LXMF - No storage_path parameter", LOG_ERROR)
return
if not os.path.isdir(self.storage_path):
os.makedirs(self.storage_path)
log("LXMF - Storage path was created", LOG_NOTICE)
log("LXMF - Storage path: " + self.storage_path, LOG_INFO)
if self.identity:
log("LXMF - Using existing Primary Identity %s" % (str(self.identity)))
else:
if not self.identity_file:
self.identity_file = "identity"
self.identity_path = self.storage_path + "/" + self.identity_file
if os.path.isfile(self.identity_path):
try:
self.identity = RNS.Identity.from_file(self.identity_path)
if self.identity != None:
log("LXMF - Loaded Primary Identity %s from %s" % (str(self.identity), self.identity_path))
else:
log("LXMF - Could not load the Primary Identity from "+self.identity_path, LOG_ERROR)
except Exception as e:
log("LXMF - Could not load the Primary Identity from "+self.identity_path, LOG_ERROR)
log("LXMF - The contained exception was: %s" % (str(e)), LOG_ERROR)
else:
try:
log("LXMF - No Primary Identity file found, creating new...")
self.identity = RNS.Identity()
self.identity.to_file(self.identity_path)
log("LXMF - Created new Primary Identity %s" % (str(self.identity)))
except Exception as e:
log("LXMF - Could not create and save a new Primary Identity", LOG_ERROR)
log("LXMF - The contained exception was: %s" % (str(e)), LOG_ERROR)
self.message_router = LXMF.LXMRouter(identity=self.identity, storagepath=self.storage_path)
if self.destination_name == "lxmf" and self.destination_type == "delivery":
self.destination = self.message_router.register_delivery_identity(self.identity, display_name=self.announce_display_name, stamp_cost=stamps_cost)
self.message_router.register_delivery_callback(self.process_lxmf_message_propagated)
else:
self.destination = RNS.Destination(self.identity, RNS.Destination.IN, RNS.Destination.SINGLE, self.destination_name, self.destination_type)
if self.announce_display_name == "":
self.announce_display_name = RNS.prettyhexrep(self.destination_hash())
if stamps_enabled and stamps_required:
self.message_router.enforce_stamps()
else:
self.message_router.ignore_stamps()
self.destination.set_default_app_data(self.announce_display_name.encode("utf-8"))
self.destination.set_proof_strategy(RNS.Destination.PROVE_ALL)
RNS.Identity.remember(packet_hash=None, destination_hash=self.destination.hash, public_key=self.identity.get_public_key(), app_data=None)
log("LXMF - Identity: " + str(self.identity), LOG_INFO)
log("LXMF - Destination: " + str(self.destination), LOG_INFO)
log("LXMF - Hash: " + RNS.prettyhexrep(self.destination_hash()), LOG_INFO)
self.destination.set_link_established_callback(self.client_connected)
if self.propagation_node_auto:
self.propagation_callback = LXMFPeerPropagation(self, "lxmf.propagation")
RNS.Transport.register_announce_handler(self.propagation_callback)
if self.propagation_node_active:
self.propagation_node_set(self.propagation_node_active)
elif self.propagation_node:
self.propagation_node_set(self.propagation_node)
else:
self.propagation_node_set(self.propagation_node)
if self.announce_startup or self.announce_periodic:
self.announce(initial=True)
if self.sync_startup or self.sync_periodic:
self.sync(True)
def register_announce_callback(self, handler_function):
self.announce_callback = handler_function(self.aspect_filter)
RNS.Transport.register_announce_handler(self.announce_callback)
def register_message_received_callback(self, handler_function):
self.message_received_callback = handler_function
def register_message_notification_callback(self, handler_function):
self.message_notification_callback = handler_function
def register_message_notification_success_callback(self, handler_function):
self.message_notification_success_callback = handler_function
def register_message_notification_failed_callback(self, handler_function):
self.message_notification_failed_callback = handler_function
def register_config_set_callback(self, handler_function):
self.config_set_callback = handler_function
def destination_hash(self):
return self.destination.hash
def destination_hash_str(self):
return RNS.hexrep(self.destination.hash, False)
def destination_check(self, destination):
if type(destination) is not bytes:
if len(destination) == ((RNS.Reticulum.TRUNCATED_HASHLENGTH//8)*2)+2:
destination = destination[1:-1]
if len(destination) != ((RNS.Reticulum.TRUNCATED_HASHLENGTH//8)*2):
log("LXMF - Destination length is invalid", LOG_ERROR)
return False
try:
destination = bytes.fromhex(destination)
except Exception as e:
log("LXMF - Destination is invalid", LOG_ERROR)
return False
return True
def destination_correct(self, destination):
if type(destination) is not bytes:
if len(destination) == ((RNS.Reticulum.TRUNCATED_HASHLENGTH//8)*2)+2:
destination = destination[1:-1]
if len(destination) != ((RNS.Reticulum.TRUNCATED_HASHLENGTH//8)*2):
return ""
try:
destination_bytes = bytes.fromhex(destination)
return destination
except Exception as e:
return ""
return ""
def send(self, destination, content="", title="", fields=None, timestamp=None, app_data="", destination_name=None, destination_type=None, method=None):
if type(destination) is not bytes:
if len(destination) == ((RNS.Reticulum.TRUNCATED_HASHLENGTH//8)*2)+2:
destination = destination[1:-1]
if len(destination) != ((RNS.Reticulum.TRUNCATED_HASHLENGTH//8)*2):
log("LXMF - Destination length is invalid", LOG_ERROR)
return None
try:
destination = bytes.fromhex(destination)
except Exception as e:
log("LXMF - Destination is invalid", LOG_ERROR)
return None
if destination_name == None:
destination_name = self.destination_name
if destination_type == None:
destination_type = self.destination_type
if method == None:
method = self.method
destination_identity = RNS.Identity.recall(destination)
destination = RNS.Destination(destination_identity, RNS.Destination.OUT, RNS.Destination.SINGLE, destination_name, destination_type)
return self.send_message(destination, self.destination, content, title, fields, timestamp, app_data, method)
def send_message(self, destination, source, content="", title="", fields=None, timestamp=None, app_data="", method=None):
if destination == self.destination:
return None
if method.lower() == "auto":
opportunistic = True
propagation = False
propagation_on_fail = True
elif method.lower() == "opportunistic":
opportunistic = True
propagation = False
propagation_on_fail = False
elif method.lower() == "direct":
opportunistic = False
propagation = False
propagation_on_fail = False
elif method.lower() == "propagated":
opportunistic = False
propagation = True
propagation_on_fail = False
elif method.lower() == "command":
opportunistic = True
propagation = False
propagation_on_fail = False
else:
opportunistic = True
propagation = False
propagation_on_fail = True
if propagation:
desired_method = LXMF.LXMessage.PROPAGATED
elif opportunistic and not self.message_router.delivery_link_available(destination.hash) and RNS.Identity.current_ratchet_id(destination.hash) != None:
desired_method = LXMF.LXMessage.OPPORTUNISTIC
else:
desired_method = LXMF.LXMessage.DIRECT
message = LXMF.LXMessage(destination, source, content, title=title, desired_method=desired_method)
if fields is not None:
message.fields = fields
if timestamp is not None:
message.timestamp = timestamp
message.app_data = app_data
self.log_message(message, "LXMF - Message send")
message.register_delivery_callback(self.message_notification)
message.register_failed_callback(self.message_notification)
if self.message_router.get_outbound_propagation_node() != None:
message.try_propagation_on_fail = propagation_on_fail
try:
self.message_router.handle_outbound(message)
time.sleep(self.send_delay)
return message.hash
except Exception as e:
log("LXMF - Could not send message " + str(message), LOG_ERROR)
log("LXMF - The contained exception was: " + str(e), LOG_ERROR)
return None
def message_notification(self, message):
if self.message_notification_callback is not None:
self.message_notification_callback(message)
if message.state == LXMF.LXMessage.FAILED and hasattr(message, "try_propagation_on_fail") and message.try_propagation_on_fail:
if hasattr(message, "stamp_generation_failed") and message.stamp_generation_failed == True:
self.log_message(message, "LXMF - Delivery receipt (failed)")
if self.message_notification_failed_callback is not None:
self.message_notification_failed_callback(message)
else:
self.log_message(message, "LXMF - Delivery receipt (failed) Retrying as propagated message")
message.try_propagation_on_fail = None
message.delivery_attempts = 0
if hasattr(message, "next_delivery_attempt"):
del message.next_delivery_attempt
message.packed = None
message.desired_method = LXMF.LXMessage.PROPAGATED
self.message_router.handle_outbound(message)
elif message.state == LXMF.LXMessage.FAILED:
self.log_message(message, "LXMF - Delivery receipt (failed)")
if self.message_notification_failed_callback is not None:
self.message_notification_failed_callback(message)
else:
self.log_message(message, "LXMF - Delivery receipt (success)")
if self.message_notification_success_callback is not None:
self.message_notification_success_callback(message)
def announce(self, app_data=None, attached_interface=None, initial=False):
announce_timer = None
if self.announce_periodic and self.announce_periodic_interval > 0:
announce_timer = threading.Timer(self.announce_periodic_interval*60, self.announce)
announce_timer.daemon = True
announce_timer.start()
if initial:
if self.announce_startup:
if self.announce_startup_delay > 0:
if announce_timer is not None:
announce_timer.cancel()
announce_timer = threading.Timer(self.announce_startup_delay, self.announce)
announce_timer.daemon = True
announce_timer.start()
else:
self.announce_now(app_data=app_data, attached_interface=attached_interface)
return
self.announce_now(app_data=app_data, attached_interface=attached_interface)
def announce_now(self, app_data=None, attached_interface=None):
if self.announce_hidden:
self.destination.announce("".encode("utf-8"), attached_interface=attached_interface)
log("LXMF - Announced: " + RNS.prettyhexrep(self.destination_hash()) +" (Hidden)", LOG_DEBUG)
elif app_data != None:
if isinstance(app_data, str):
self.destination.announce(app_data.encode("utf-8"), attached_interface=attached_interface)
log("LXMF - Announced: " + RNS.prettyhexrep(self.destination_hash()) +": " + app_data, LOG_DEBUG)
else:
self.destination.announce(app_data, attached_interface=attached_interface)
log("LMF - Announced: " + RNS.prettyhexrep(self.destination_hash()), LOG_DEBUG)
else:
self.destination.announce(self.announce_data, attached_interface=attached_interface)
log("LXMF - Announced: " + RNS.prettyhexrep(self.destination_hash()), LOG_DEBUG)
def sync(self, initial=False):
sync_timer = None
if self.sync_periodic and self.sync_periodic_interval > 0:
sync_timer = threading.Timer(self.sync_periodic_interval*60, self.sync)
sync_timer.daemon = True
sync_timer.start()
if initial:
if self.sync_startup:
if self.sync_startup_delay > 0:
if sync_timer is not None:
sync_timer.cancel()
sync_timer = threading.Timer(self.sync_startup_delay, self.sync)
sync_timer.daemon = True
sync_timer.start()
else:
self.sync_now(self.sync_limit)
return
self.sync_now(self.sync_limit)
def sync_now(self, limit=None):
if self.message_router.get_outbound_propagation_node() is not None:
if self.message_router.propagation_transfer_state == LXMF.LXMRouter.PR_IDLE or self.message_router.propagation_transfer_state == LXMF.LXMRouter.PR_COMPLETE:
log("LXMF - Message sync requested from propagation node " + RNS.prettyhexrep(self.message_router.get_outbound_propagation_node()) + " for " + str(self.identity), LOG_DEBUG)
self.message_router.request_messages_from_propagation_node(self.identity, max_messages = limit)
return True
else:
return False
else:
return False
def propagation_node_set(self, dest_str):
if not dest_str:
return False
if len(dest_str) != ((RNS.Reticulum.TRUNCATED_HASHLENGTH//8)*2):
log("LXMF - Propagation node length is invalid", LOG_ERROR)
return False
try:
dest_hash = bytes.fromhex(dest_str)
except Exception as e:
log("LXMF - Propagation node is invalid", LOG_ERROR)
return False
node_identity = RNS.Identity.recall(dest_hash)
if node_identity != None:
log("LXMF - Propagation node: " + RNS.prettyhexrep(dest_hash), LOG_INFO)
dest_hash = RNS.Destination.hash_from_name_and_identity("lxmf.propagation", node_identity)
self.message_router.set_outbound_propagation_node(dest_hash)
self.propagation_node_active = dest_str
return True
else:
log("LXMF - Propagation node identity not known", LOG_ERROR)
return False
def propagation_node_update(self, dest_str):
if self.propagation_node_hash_str() != dest_str:
if self.propagation_node_set(dest_str) and self.config_set_callback is not None:
self.config_set_callback("propagation_node_active", dest_str)
def propagation_node_hash(self):
try:
return bytes.fromhex(self.propagation_node_active)
except:
return None
def propagation_node_hash_str(self):
if self.propagation_node_active:
return self.propagation_node_active
else:
return ""
def client_connected(self, link):
log("LXMF - Client connected " + str(link), LOG_EXTREME)
link.set_resource_strategy(RNS.Link.ACCEPT_ALL)
link.set_resource_concluded_callback(self.resource_concluded)
link.set_packet_callback(self.packet_received)
def packet_received(self, lxmf_bytes, packet):
log("LXMF - Single packet delivered " + str(packet), LOG_EXTREME)
self.process_lxmf_message_bytes(lxmf_bytes)
def resource_concluded(self, resource):
log("LXMF - Resource data transfer (multi packet) delivered " + str(resource.file), LOG_EXTREME)
if resource.status == RNS.Resource.COMPLETE:
lxmf_bytes = resource.data.read()
self.process_lxmf_message_bytes(lxmf_bytes)
else:
log("LXMF - Received resource message is not complete", LOG_EXTREME)
def process_lxmf_message_bytes(self, lxmf_bytes):
try:
message = LXMF.LXMessage.unpack_from_bytes(lxmf_bytes)
except Exception as e:
log("LXMF - Could not assemble LXMF message from received data", LOG_ERROR)
log("LXMF - The contained exception was: " + str(e), LOG_ERROR)
return
message.desired_method = LXMF.LXMessage.DIRECT
self.log_message(message, "LXMF - Message received")
if self.message_received_callback is not None:
log("LXMF - Call to registered message received callback", LOG_DEBUG)
self.message_received_callback(message)
else:
log("LXMF - No message received callback registered", LOG_DEBUG)
def process_lxmf_message_propagated(self, message):
message.desired_method = LXMF.LXMessage.PROPAGATED
self.log_message(message, "LXMF - Message received")
if self.message_received_callback is not None:
log("LXMF - Call to registered message received callback", LOG_DEBUG)
self.message_received_callback(message)
else:
log("LXMF - No message received callback registered", LOG_DEBUG)
def log_message(self, message, message_tag="LXMF - Message log"):
if message.signature_validated:
signature_string = "Validated"
else:
if message.unverified_reason == LXMF.LXMessage.SIGNATURE_INVALID:
signature_string = "Invalid signature"
elif message.unverified_reason == LXMF.LXMessage.SOURCE_UNKNOWN:
signature_string = "Cannot verify, source is unknown"
else:
signature_string = "Signature is invalid, reason undetermined"
title = message.title.decode("utf-8")
content = message.content.decode("utf-8")
fields = message.fields
log(message_tag + ":", LOG_DEBUG)
log("- Date/Time: " + time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(message.timestamp)), LOG_DEBUG)
log("- Title: " + title, LOG_DEBUG)
log("- Content: " + content, LOG_DEBUG)
log("- Fields: " + str(fields), LOG_DEBUG)
log("- Size: " + str(len(title) + len(content) + len(title) + len(pickle.dumps(fields))) + " bytes", LOG_DEBUG)
log("- Source: " + RNS.prettyhexrep(message.source_hash), LOG_DEBUG)
log("- Destination: " + RNS.prettyhexrep(message.destination_hash), LOG_DEBUG)
log("- Signature: " + signature_string, LOG_DEBUG)
log("- Attempts: " + str(message.delivery_attempts), LOG_DEBUG)
log("- Method: " + str(message.desired_method), LOG_DEBUG)
if hasattr(message, "app_data"):
log("- App Data: " + message.app_data, LOG_DEBUG)
class LXMFPeerPropagation():
def __init__(self, owner, aspect_filter=None):
self.owner = owner
self.aspect_filter = aspect_filter
EMITTED_DELTA_GRACE = 300
EMITTED_DELTA_IGNORE = 10
def received_announce(self, destination_hash, announced_identity, app_data):
if app_data == None:
return
if len(app_data) == 0:
return
try:
unpacked = msgpack.unpackb(app_data)
if not LXMF.pn_announce_data_is_valid(unpacked):
raise ValueError("Received malformed propagation node announce")
node_active = unpacked[0]
emitted = unpacked[1]
hop_count = RNS.Transport.hops_to(destination_hash)
age = time.time() - emitted
if age < 0:
if age < -1*PropDetector.EMITTED_DELTA_GRACE:
return
log("LXMF - Received an propagation node announce from "+RNS.prettyhexrep(destination_hash)+": "+str(age)+" seconds ago, "+str(hop_count)+" hops away", LOG_INFO)
if self.owner.propagation_node_active == None:
self.owner.propagation_node_update(RNS.hexrep(destination_hash, False))
else:
prev_hop_count = RNS.Transport.hops_to(self.owner.propagation_node_hash())
if hop_count <= prev_hop_count:
self.owner.propagation_node_update(RNS.hexrep(destination_hash, False))
except:
return
##############################################################################################################
# LXMF Functions
#### LXMF - Announce ####
class lxmf_announce_callback:
def __init__(self, aspect_filter=None):
self.aspect_filter = aspect_filter
@staticmethod
def received_announce(destination_hash, announced_identity, app_data):
if app_data == None:
return
if len(app_data) == 0:
return
try:
if (app_data[0] >= 0x90 and app_data[0] <= 0x9f) or app_data[0] == 0xdc:
app_data = msgpack.unpackb(app_data)
if isinstance(app_data, list):
if len(app_data) > 2 and app_data[2] != None and isinstance(app_data[2], dict):
if MSG_FIELD_TYPE in app_data[2]:
denys = config_getarray(CONFIG, "lxmf", "announce_deny_type")
if len(denys) > 0:
if "*" in denys:
return
for deny in denys:
if app_data[2][MSG_FIELD_TYPE] == deny:
return
if len(app_data) > 1 and app_data[0] != None:
app_data = app_data[0]
else:
app_data = b""
else:
app_data = b""
except:
app_data = b""
try:
app_data = app_data.decode("utf-8")
except:
return
log("LXMF - Received an announce from " + RNS.prettyhexrep(destination_hash) + ": " + app_data, LOG_INFO)
global DATA
sections = []
for (key, val) in CONFIG.items("rights"):
if DATA.has_section(key):
sections.append(key)
if DATA["main"].getboolean("auto_add_user_announce"):
source_hash = RNS.hexrep(destination_hash, False)
exist = False
hop_count = RNS.Transport.hops_to(destination_hash)
hop_min = DATA.getint("main", "auto_add_user_announce_hop_min")
hop_max = DATA.getint("main", "auto_add_user_announce_hop_max")
if hop_min > 0 and hop_count < hop_min:
exist = True
if hop_max > 0 and hop_count < hop_max:
exist = True
for section in DATA.sections():
for (key, val) in DATA.items(section):
if key == source_hash:
exist = True
break
if exist:
break
if not exist:
source_right = DATA["main"]["auto_add_user_type"]
if DATA.has_section(source_right) and source_right != "main":
if CONFIG["main"].getboolean("auto_name_add"):
source_name = app_data
else:
source_name = ""
DATA[source_right][source_hash] = source_name
fields = fields_generate(src_hash=destination_hash, src_name=source_name, members=True, result_key="join", result_value=True)
for section in sections:
if "receive_join" in config_get(CONFIG, "rights", section).split(","):
for (key, val) in DATA.items(section):
if key != source_hash:
LXMF_PEER.send(key, "", "", fields)
if CONFIG["main"].getboolean("auto_save_data"):
DATA.remove_option("main", "unsaved")
if not data_save(PATH + "/data.cfg"):
DATA["main"]["unsaved"] = "True"
else:
DATA["main"]["unsaved"] = "True"
LXMF_PEER.send(source_hash, DATA["main"]["welcome"].replace("!n!", "\n"), "", fields_generate(members=True, data=True, cmd=source_right, config=source_right, result_key="join", result_value=True))
return
elif source_right == "":
log("LXMF - Source " + RNS.prettyhexrep(message.source_hash) + " not exist (auto add disabled)", LOG_DEBUG)
return
if CONFIG["main"].getboolean("auto_name_def") or CONFIG["main"].getboolean("auto_name_change"):
source_hash = RNS.hexrep(destination_hash, False)
for section in DATA.sections():
for (key, val) in DATA.items(section):
if key == source_hash:
if (val == "" and CONFIG["main"].getboolean("auto_name_def")) or (val != "" and CONFIG["main"].getboolean("auto_name_change")):
value = app_data
if value != DATA[section][key]:
DATA[section][key] = value
if CONFIG["main"].getboolean("auto_save_data"):
DATA.remove_option("main", "unsaved")
if not data_save(PATH + "/data.cfg"):
DATA["main"]["unsaved"] = "True"
else:
DATA["main"]["unsaved"] = "True"
#### LXMF - Message ####
def lxmf_message_received_callback(message):
if CONFIG["lxmf"].getboolean("signature_validated") and not message.signature_validated:
log("LXMF - Source " + RNS.prettyhexrep(message.source_hash) + " have no valid signature", LOG_DEBUG)
return
title = message.title.decode("utf-8").strip()
denys = config_getarray(CONFIG, "message", "deny_title")
if len(denys) > 0:
if "*" in denys:
return
for deny in denys:
if deny in title:
return
content = message.content.decode("utf-8").strip()
denys = config_getarray(CONFIG, "message", "deny_content")
if len(denys) > 0:
if "*" in denys:
return
for deny in denys:
if deny in title:
return
if message.fields:
denys = config_getarray(CONFIG, "message", "deny_fields")
if len(denys) > 0:
if "*" in denys:
return
for deny in denys:
if deny in message.fields:
return
if not CONFIG["message"].getboolean("title"):
title = ""
if CONFIG["message"].getboolean("fields") and message.fields:
pass
elif content == "":
return
fields = message.fields
sections = []
for (key, val) in CONFIG.items("rights"):
if DATA.has_section(key):
sections.append(key)
destination_hash = RNS.hexrep(message.destination_hash, False)
source_hash = RNS.hexrep(message.source_hash, False)
source_name = ""
source_right = ""
for section in DATA.sections():
if section.startswith("block"):
if DATA.has_option(section, source_hash):
log("LXMF - Source " + RNS.prettyhexrep(message.source_hash) + " blocked", LOG_DEBUG)
return
source_rights = []
for section in DATA.sections():
for (key, val) in DATA.items(section):
if key == source_hash:
if source_name == "":
source_name = val
source_right = section
source_rights.append(section)
if source_right == "" and DATA["main"].getboolean("auto_add_user_message"):
if CONFIG["lxmf"].getboolean("signature_validated_new") and not message.signature_validated:
log("LXMF - Source " + RNS.prettyhexrep(message.source_hash) + " have no valid signature 'new'", LOG_DEBUG)
return
source_right = DATA["main"]["auto_add_user_type"]
if DATA.has_section(source_right) and source_right != "main":
if CONFIG["main"].getboolean("auto_name_add"):
app_data = RNS.Identity.recall_app_data(message.source_hash)
if app_data != None and len(app_data) > 0:
try:
if (app_data[0] >= 0x90 and app_data[0] <= 0x9f) or app_data[0] == 0xdc:
app_data = msgpack.unpackb(app_data)
if isinstance(app_data, list) and len(app_data) > 1 and app_data[0] != None:
app_data = app_data[0]
else:
app_data = b""
except:
pass
source_name = app_data.decode("utf-8")
DATA[source_right][source_hash] = source_name
fields = fields_generate(src_hash=message.source_hash, src_name=source_name, members=True, result_key="join", result_value=True)
for section in sections:
if "receive_join" in config_get(CONFIG, "rights", section).split(","):
for (key, val) in DATA.items(section):
if key != source_hash:
LXMF_PEER.send(key, "", title, fields)
if CONFIG["main"].getboolean("auto_save_data"):
DATA.remove_option("main", "unsaved")
if not data_save(PATH + "/data.cfg"):
DATA["main"]["unsaved"] = "True"
else:
DATA["main"]["unsaved"] = "True"
LXMF_PEER.send(source_hash, DATA["main"]["welcome"].replace("!n!", "\n"), title, fields_generate(members=True, data=True, cmd=source_right, config=source_right, result_key="join", result_value=True))
return
elif source_right == "":
log("LXMF - Source " + RNS.prettyhexrep(message.source_hash) + " not exist (auto add disabled)", LOG_DEBUG)
return
source_rights = config_get(CONFIG, "rights", source_right)
if source_rights == "":
log("LXMF - Source " + RNS.prettyhexrep(message.source_hash) + " have no right", LOG_DEBUG)
return
source_rights = source_rights.split(",")
if CONFIG["lxmf"].getboolean("signature_validated_known") and not message.signature_validated:
log("LXMF - Source " + RNS.prettyhexrep(message.source_hash) + " have no valid signature 'known'", LOG_DEBUG)
return
# Commands
if fields and MSG_FIELD_COMMANDS_EXECUTE in fields:
cmd = ""
key, value = list(fields[MSG_FIELD_COMMANDS_EXECUTE][0].items())[0]
if isinstance(key, str):
cmd = key
if isinstance(value, str):
cmd += " "+value
# allow
if cmd.startswith("allow ") and "allow" in source_rights:
try:
cmd, value = cmd.split(" ", 1)
user_section = DATA["main"]["allow_user_type"]
if DATA.has_section(user_section) and user_section != "main":
value = LXMF_PEER.destination_correct(value)
if value != "":
executed = False
section = "wait"
if DATA.has_section(section):
for (key, val) in DATA.items(section):
if key == value:
user_name = val
executed = True
DATA[user_section][key] = val
DATA.remove_option(section, key)
if executed:
LXMF_PEER.send(value, "", "", fields_generate(members=True, data=True, cmd=user_section, config=user_section, result_key="allow", result_value=True))
fields = fields_generate(src_hash=bytes.fromhex(value), src_name=user_name, members=True, result_key="allow", result_value=True)
for section in sections:
if "receive_allow" in config_get(CONFIG, "rights", section).split(","):
for (key, val) in DATA.items(section):
LXMF_PEER.send(key, "", "", fields)
LXMF_PEER.send(source_hash, "", "", fields_generate(src_hash=bytes.fromhex(value), src_name=user_name, members=True, result_key="allow", result_value=True))
if CONFIG["main"].getboolean("auto_save_data"):