optimized control_mqtt

control_mqtt.py

@@ -0,0 +1,119 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import paho.mqtt.subscribe as subscribe
+import paho.mqtt.publish as publish
+import subprocess
+import argparse
+import json
+import os
+import logging
+
+class CurrentClients:
+    def __init__(self, args):
+        with open(args.dyn_sec_conf, "r") as file:
+            data = json.load(file)
+        self.active_clients_list = [client["username"] for client in data["clients"]]
+        self.active_clients_pids = {}
+        for username in self.active_clients_list:
+            if username.endswith("_ase"):
+                self.start_client(username, args)
+
+    def list(self):
+        return self.active_clients_list
+
+    def pids(self):
+        return self.active_clients_pids
+
+    def add(self, client, args):
+        self.active_clients_list.append(client)
+        self.start_client(client, args) if client.endswith("_ase") else None
+
+    def remove(self, client):
+        self.active_clients_list.remove(client)
+        self.stop_client(client) if client.endswith("_ase") else None
+
+    def start_client(self, client, args):
+        process = subprocess.Popen(
+            ["python3", args.ase_receiver, client],
+            stdout=subprocess.PIPE,
+            stderr=subprocess.PIPE,
+            text=True
+        )
+        self.active_clients_pids[client] = process.pid
+        logging.info(f"Started process for {client}, PID: {process.pid}")
+
+    def stop_client(self, client):
+        logging.info(f"Terminating process for {client} (PID: {self.active_clients_pids[client]})")
+        os.kill(self.active_clients_pids[client], 9)
+
+def get_client_list(args, auth):
+    publish.single(args.pub_topic, '{"commands":[{"command":"listClients"}]}', hostname=args.host, port=args.port, auth=auth)
+
+def create_client(datas, userdata):
+    get_client_list(userdata['args'], userdata['auth'])
+
+def delete_client(datas, userdata):
+    get_client_list(userdata['args'], userdata['auth'])
+
+def list_clients(datas, userdata):
+    list_clients = datas['responses'][0]['data']['clients']
+
+    delta_clients_add = set(list_clients) - set(userdata['cur_clients'].list())
+    [userdata['cur_clients'].add(item, userdata['args']) for item in delta_clients_add]
+
+    delta_clients_del = set(userdata['cur_clients'].list()) - set(list_clients)
+    [userdata['cur_clients'].remove(item) for item in delta_clients_del]
+
+def ctrl_client_mod(client, userdata, message):
+
+    command_functions = {
+        "createClient": create_client,
+        "deleteClient": delete_client,
+        "listClients": list_clients,
+    }
+
+    datas = json.loads(message.payload)
+    target_commands = {"createClient", "deleteClient", "listClients"}
+    found_command = [item["command"] for item in datas['responses'] if item["command"] in target_commands]
+    if found_command:
+        command_functions[found_command[0]](datas, userdata)
+
+def main():
+    parser = argparse.ArgumentParser()
+
+    parser.add_argument('-H', '--host', default="mqtt")
+    parser.add_argument('-t', '--sub_topic', default="$CONTROL/dynamic-security/v1/response")
+    parser.add_argument('-T', '--pub_topic', default="$CONTROL/dynamic-security/v1")
+    parser.add_argument('-q', '--qos', type=int,default=0)
+    parser.add_argument('-u', '--username', default="admin")
+    parser.add_argument('-p', '--password', default="BatManu#171017")
+    parser.add_argument('-P', '--port', type=int, default=1883)
+    parser.add_argument('-l', '--log', default='/var/log/mosquitto/subscriber_manager.log')
+    parser.add_argument('-L', '--log_level', choices=['DEBUG', 'INFO', 'WARNING', 'ERROR'], default='INFO')
+    parser.add_argument('-s', '--dyn_sec_conf', default='./dynamic-security.json')
+    parser.add_argument('-r', '--ase_receiver', default='./subscribe_ase_receiver.py')
+
+    args = parser.parse_args()
+
+    logging.basicConfig(
+        format="%(asctime)s - PID: %(process)d %(levelname)8s: %(message)s ",
+        level=args.log_level,
+        filename=args.log
+    )
+
+    cur_clients = CurrentClients(args)
+    auth = {'username': args.username, 'password': args.password}
+    userdata = {'args': args, 'cur_clients': cur_clients, 'auth': auth}
+
+    try:
+        subscribe.callback(ctrl_client_mod, hostname=args.host, port=args.port, topics=args.sub_topic, auth=auth, userdata=userdata)
+    except (KeyboardInterrupt, Exception) as e:
+        logging.info("Terminating: ....")
+
+        for client in cur_clients.list():
+            cur_clients.stop_client(client) if client.endswith("_ase") else None
+
+
+if __name__ == "__main__":
+    main()