LXMF-Tools/lxmf_ping/lxmf_ping.py

#!/usr/bin/env python3
##############################################################################################################
#
# Copyright (c) 2022 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 argparse

#### JSON ####
import json
import pickle

#### String ####
import string

#### Other ####
import random
import secrets

#### 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 umsgpack


##############################################################################################################
# Globals


#### Global Variables - Configuration ####
NAME = "LXMF Ping"
DESCRIPTION = "Periodically sends pings/messages and evaluates the status"
VERSION = "0.0.1 (2022-10-21)"
COPYRIGHT = "(c) 2022 Sebastian Obele  /  obele.eu"
PATH = os.path.expanduser("~") + "/." + os.path.splitext(os.path.basename(__file__))[0]
PATH_RNS = None




#### Global Variables - System (Not changeable) ####
DATA = None
RNS_CONNECTION = None
LXMF_CONNECTION = None


##############################################################################################################
# LXMF Class


class lxmf_connection:
    message_received_callback = None
    message_notification_callback = None
    message_notification_success_callback = None
    message_notification_failed_callback = None


    def __init__(self, storage_path=None, identity_file="identity", identity=None, destination_name="lxmf", destination_type="delivery", display_name="", send_delay=0, desired_method="direct", propagation_node=None, try_propagation_on_fail=False, 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.display_name = display_name

        self.send_delay = int(send_delay)

        if desired_method == "propagated" or desired_method == "PROPAGATED":
            self.desired_method_direct = False
        else:
            self.desired_method_direct = True
        self.propagation_node = propagation_node
        self.try_propagation_on_fail = try_propagation_on_fail

        self.announce_startup = announce_startup
        self.announce_startup_delay = int(announce_startup_delay)

        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)
        self.sync_limit = int(sync_limit)
        self.sync_periodic = sync_periodic
        self.sync_periodic_interval = int(sync_periodic_interval)

        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)

        self.destination = self.message_router.register_delivery_identity(self.identity, display_name=self.display_name)

        self.message_router.register_delivery_callback(self.process_lxmf_message_propagated)

        if self.display_name == "":
            self.display_name = RNS.prettyhexrep(self.destination_hash())

        self.destination.set_default_app_data(self.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)

        self.autoselect_propagation_node()

        if self.announce_startup or self.announce_periodic:
            self.announce(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 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=""):
        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

            try:
                destination = bytes.fromhex(destination)
            except Exception as e:
                log("LXMF - Destination is invalid", LOG_ERROR)
                return

        destination_identity = RNS.Identity.recall(destination)
        destination = RNS.Destination(destination_identity, RNS.Destination.OUT, RNS.Destination.SINGLE, self.destination_name, self.destination_type)
        self.send_message(destination, self.destination, content, title, fields, timestamp, app_data)


    def send_message(self, destination, source, content="", title="", fields=None, timestamp=None, app_data=""):
        if self.desired_method_direct:
            desired_method = LXMF.LXMessage.DIRECT
        else:
            desired_method = LXMF.LXMessage.PROPAGATED

        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.message_method(message)
        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 = self.try_propagation_on_fail

        try:
            self.message_router.handle_outbound(message)
            time.sleep(self.send_delay)
        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


    def message_notification(self, message):
        self.message_method(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:
            self.log_message(message, "LXMF - Delivery receipt (failed) Retrying as propagated message")
            message.try_propagation_on_fail = None
            message.delivery_attempts = 0
            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 message_method(self, message):
        if message.desired_method == LXMF.LXMessage.DIRECT:
            message.desired_method_str = "direct"
        elif message.desired_method == LXMF.LXMessage.PROPAGATED:
            message.desired_method_str = "propagated"


    def announce(self, 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()
            return

        self.announce_now()


    def announce_now(self, app_data=None):
        if app_data:
            self.destination.announce(app_data.encode("utf-8"))
            log("LXMF - Announced: " + RNS.prettyhexrep(self.destination_hash()) + ":" + app_data, LOG_DEBUG)
        else:
            self.destination.announce()
            log("LXMF - Announced: " + RNS.prettyhexrep(self.destination_hash()) + ": " + self.display_name, 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))
                self.message_router.request_messages_from_propagation_node(self.identity, max_messages = limit)
                return True
            else:
                return False
        else:
            return False


    def autoselect_propagation_node(self):
        if self.propagation_node is not None:
            if len(self.propagation_node) != ((RNS.Reticulum.TRUNCATED_HASHLENGTH//8)*2):
                    log("LXMF - Propagation node length is invalid", LOG_ERROR)
            else:
                try:
                    propagation_hash = bytes.fromhex(self.propagation_node)
                except Exception as e:
                    log("LXMF - Propagation node is invalid", LOG_ERROR)
                    return

            node_identity = RNS.Identity.recall(propagation_hash)
            if node_identity != None:
                log("LXMF - Propagation node: " + RNS.prettyhexrep(propagation_hash), LOG_INFO)
                propagation_hash = RNS.Destination.hash_from_name_and_identity("lxmf.propagation", node_identity)
                self.message_router.set_outbound_propagation_node(propagation_hash)
            else:
                log("LXMF - Propagation node identity not known", LOG_ERROR)


    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.message_method(message)
        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.message_method(message)
        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)
        if hasattr(message, "desired_method_str"):
            log("-      Method: " + message.desired_method_str + " (" + str(message.desired_method) + ")", LOG_DEBUG)
        else:
            log("-      Method: " + str(message.desired_method), LOG_DEBUG)
        if hasattr(message, "app_data"):
            log("-    App Data: " + message.app_data, LOG_DEBUG)


##############################################################################################################
# LXMF Functions


#### LXMF - Success ####
def lxmf_success(message):
    global DATA
    key = RNS.hexrep(message.destination_hash, False)
    if not key in DATA:
        key = "."
    if not key in DATA:
        return
    DATA[key]["count_success"] = DATA[key]["count_success"] + 1
    timestamp = round(float(time.time()) - float(message.timestamp), 4)
    if DATA[key]["time_min"] == 0 or DATA[key]["time_min"] > timestamp:
        DATA[key]["time_min"] = timestamp
    if DATA[key]["time_max"] == 0 or DATA[key]["time_max"] < timestamp:
        DATA[key]["time_max"] = timestamp
    DATA[key]["time"] = DATA[key]["time"] + timestamp
    DATA[key]["time_avg"] = round(DATA[key]["time"]/DATA[key]["count_success"], 4)
    count = str(message.content)
    if "#" in count:
        count = count.split("#", 1)[1]
        count = count.split(" ", 1)[0]
    else:
        count = ""
    print("Destination: " + str (key) + "  |  #: " + str(count) + "  |  Messages delivered: " + str(DATA[key]["count_success"]) + "/" + str(DATA[key]["count"]) + " (" + str(round(100/DATA[key]["count"]*DATA[key]["count_success"], 2)) + "%)  |  Time (min / max / avg): " + str(DATA[key]["time_min"]) + " / " + str(DATA[key]["time_max"]) + " / " + str(DATA[key]["time_avg"]) + "  |  Info: Success")




#### LXMF - Failed ####
def lxmf_failed(message):
    global DATA
    key = RNS.hexrep(message.destination_hash, False)
    if not key in DATA:
        key = "."
    if not key in DATA:
        return
    DATA[key]["count_failed"] = DATA[key]["count_failed"] + 1
    count = str(message.content)
    if "#" in count:
        count = count.split("#", 1)[1]
        count = count.split(" ", 1)[0]
    else:
        count = ""
    print("Destination: " + str (key) + "  |  #: " + str(count) + "  |  Messages delivered: " + str(DATA[key]["count_success"]) + "/" + str(DATA[key]["count"]) + " (" + str(round(100/DATA[key]["count"]*DATA[key]["count_success"], 2)) + "%)  |  Time (min / max / avg): " + str(DATA[key]["time_min"]) + " / " + str(DATA[key]["time_max"]) + " / " + str(DATA[key]["time_avg"]) + "  |  Info: Failed")


##############################################################################################################
# Value convert


def val_to_bool(val):
    if val == "on" or val == "On" or val == "true" or val == "True" or val == "yes" or val == "Yes" or val == "1" or val == "open" or val == "opened" or val == "up":
        return True
    elif val == "off" or val == "Off" or val == "false" or val == "False" or val == "no" or val == "No" or val == "0" or val == "close" or val == "closed" or val == "down":
        return False
    elif val != "":
        return True
    else:
        return False


##############################################################################################################
# Log


LOG_FORCE    = -1
LOG_CRITICAL = 0
LOG_ERROR    = 1
LOG_WARNING  = 2
LOG_NOTICE   = 3
LOG_INFO     = 4
LOG_VERBOSE  = 5
LOG_DEBUG    = 6
LOG_EXTREME  = 7

LOG_LEVEL         = LOG_NOTICE
LOG_LEVEL_SERVICE = LOG_NOTICE
LOG_TIMEFMT       = "%Y-%m-%d %H:%M:%S"
LOG_MAXSIZE       = 5*1024*1024
LOG_PREFIX        = ""
LOG_SUFFIX        = ""
LOG_FILE          = ""




def log(text, level=3, file=None):
    if not LOG_LEVEL:
        return

    if LOG_LEVEL >= level:
        name = "Unknown"
        if (level == LOG_FORCE):
            name = ""
        if (level == LOG_CRITICAL):
            name = "Critical"
        if (level == LOG_ERROR):
            name = "Error"
        if (level == LOG_WARNING):
            name = "Warning"
        if (level == LOG_NOTICE):
            name = "Notice"
        if (level == LOG_INFO):
            name = "Info"
        if (level == LOG_VERBOSE):
            name = "Verbose"
        if (level == LOG_DEBUG):
            name = "Debug"
        if (level == LOG_EXTREME):
            name = "Extra"

        if not isinstance(text, str):
            text = str(text)

        text = "[" + time.strftime(LOG_TIMEFMT, time.localtime(time.time())) +"] [" + name + "] " + LOG_PREFIX + text + LOG_SUFFIX

        if file == None and LOG_FILE != "":
            file = LOG_FILE

        if file == None:
            print(text)
        else:
            try:
                file_handle = open(file, "a")
                file_handle.write(text + "\n")
                file_handle.close()
                
                if os.path.getsize(file) > LOG_MAXSIZE:
                    file_prev = file + ".1"
                    if os.path.isfile(file_prev):
                        os.unlink(file_prev)
                    os.rename(file, file_prev)
            except:
                return


##############################################################################################################
# System


#### Panic #####
def panic():
    sys.exit(255)


#### Exit #####
def exit():
    sys.exit(0)


##############################################################################################################
# Setup/Start


#### Setup #####
def setup(path=None, path_rns=None, path_log=None, loglevel=None, dest="", interval=1, size=128, count=0, inst=1):
    global DATA
    global PATH
    global PATH_RNS
    global LOG_LEVEL
    global LOG_FILE
    global RNS_CONNECTION
    global LXMF_CONNECTION

    if path is not None:
        if path.endswith("/"):
            path = path[:-1]
        PATH = path

    if path_rns is not None:
        if path_rns.endswith("/"):
            path_rns = path_rns[:-1]
        PATH_RNS = path_rns

    if loglevel is not None:
        LOG_LEVEL = loglevel
        rns_loglevel = loglevel
    else:
        rns_loglevel = None

    RNS_CONNECTION = RNS.Reticulum(configdir=PATH_RNS, loglevel=rns_loglevel)

    print("...............................................................................")
    print("        Name: " + NAME + " - " + DESCRIPTION)
    print("Program File: " + __file__)
    print("     Version: " + VERSION)
    print("   Copyright: " + COPYRIGHT)
    print("...............................................................................")

    log("LXMF - Connecting ...", LOG_DEBUG)

    if path is None:
        path = PATH

    LXMF_CONNECTION = lxmf_connection(storage_path=path)

    LXMF_CONNECTION.register_message_notification_success_callback(lxmf_success)
    LXMF_CONNECTION.register_message_notification_failed_callback(lxmf_failed)

    log("LXMF - Connected", LOG_DEBUG)

    log("...............................................................................", LOG_FORCE)
    log("LXMF - Address: " + RNS.prettyhexrep(LXMF_CONNECTION.destination_hash()), LOG_FORCE)
    log("...............................................................................", LOG_FORCE)

    DATA = {}
    destinations = dest.split(",") 
    for key in destinations:    
        DATA[key] = {}
        DATA[key]["count"] = 0
        DATA[key]["count_success"] = 0
        DATA[key]["count_failed"] = 0
        DATA[key]["time"] = 0
        DATA[key]["time_min"] = 0
        DATA[key]["time_max"] = 0
        DATA[key]["time_avg"] = 0

    count_current = 0
    while True:
        if count == 0 or count_current < count:
            count_current = count_current + 1
            letters = string.ascii_lowercase
            content = ''.join(random.choice(letters) for i in range(size))
            for key in DATA:
                DATA[key]["count"] = DATA[key]["count"] + 1
                content = "#"+ str(DATA[key]["count"]) + " " + content
                content = content[:size]
                if key == ".":
                    LXMF_CONNECTION.send(secrets.token_hex(nbytes=10), content)
                else:
                    LXMF_CONNECTION.send(key, content)
                print("Destination: " + str (key) + "  |  #: " + str(DATA[key]["count"]) + "  |  Messages delivered: " + str(DATA[key]["count_success"]) + "/" + str(DATA[key]["count"]) + " (" + str(round(100/DATA[key]["count"]*DATA[key]["count_success"], 2)) + "%)  |  Time (min / max / avg): " + str(DATA[key]["time_min"]) + " / " + str(DATA[key]["time_max"]) + " / " + str(DATA[key]["time_avg"]) + "  |  Info: Sending/Queued")
        time.sleep(interval)




#### Start ####
def main():
    try:
        description = NAME + " - " + DESCRIPTION
        parser = argparse.ArgumentParser(description=description)

        parser.add_argument("-p", "--path", action="store", type=str, default=None, help="Path to alternative config directory")
        parser.add_argument("-pr", "--path_rns", action="store", type=str, default=None, help="Path to alternative Reticulum config directory")
        parser.add_argument("-pl", "--path_log", action="store", type=str, default=None, help="Path to alternative log directory")
        parser.add_argument("-l", "--loglevel", action="store", type=int, default=LOG_LEVEL)

        parser.add_argument("-d", "--dest", action="store", required=True, type=str, default=None, help="Single destination hash or ,-separated list with destination hashs or . for random destination")
        parser.add_argument("-t", "--time", action="store", type=float, default=1, help="Time between messages in seconds")
        parser.add_argument("-s", "--size", action="store", type=int, default=128, help="Size (lenght) of the message content")
        parser.add_argument("-c", "--count", action="store", type=float, default=0, help="Maximum message send count (0=no end)")
        parser.add_argument("-i", "--inst", action="store", type=int, default=1, help="Parallel instances (different sender addresses)")

        params = parser.parse_args()

        setup(path=params.path, path_rns=params.path_rns, path_log=params.path_log, loglevel=params.loglevel, dest=params.dest, interval=params.time, size=params.size, count=params.count, inst=params.inst)

    except KeyboardInterrupt:
        print("Terminated by CTRL-C")
        exit()


##############################################################################################################
# Init


if __name__ == "__main__":
    main()