Curso-lenguaje-python/python-ofensivo/11_chat_cifrado_E2E/server.py

89 lines
2.0 KiB
Python

#!/usr/bin/env python3
"""
SERVER DE CHAT CIFRADO E2E
"""
import socket as s
import threading as th
import ssl
def client_thread(client_socket, clients, usernames):
username = client_socket.recv(1024).decode()
usernames[client_socket] = username
print(f"\n[+] El usuario {username} se ha conectado al chat")
for client in clients:
if client is not client_socket:
client.sendall(
f"\n[+] El usuario {username} se ha conectado al chat\n\n".encode()
)
while True:
try:
message = client_socket.recv(1024).decode()
if not message:
break
if message == "!usuarios":
client_socket.sendall(
f"\n[i] Usuarios conectados: {', '.join(usernames.values())}\n\n".encode()
)
continue
for client in clients:
if client is not client_socket:
client.sendall(message.encode())
except:
break
client_socket.close()
clients.remove(client_socket)
del usernames[client_socket]
def server_program():
host = 'localhost'
port = 1234
server_socket = s.socket(s.AF_INET, s.SOCK_STREAM)
server_socket.setsockopt(s.SOL_SOCKET, s.SO_REUSEADDR, 1) # TIME_WAIT
server_socket.bind((host, port))
server_socket = ssl.wrap_socket(
server_socket, keyfile='server-key.key',
certfile='server-cert.pem', server_side=True
)
server_socket.listen()
print(f"\n[+] Server está en escucha...")
clients = []
usernames = {}
while True:
client_socket, addr = server_socket.accept()
clients.append(client_socket)
print(f"\n[+] Conectado a {addr}")
thread = th.Thread(
target=client_thread,
args=(client_socket, clients, usernames)
)
thread.daemon = True
thread.start()
server_socket.close()
if __name__ == '__main__':
server_program()