Update env.sh

env.sh

@@ -7,7 +7,7 @@
 # 3. SMTP
 # 4. IRC
 
-PROTOCOL=0
+PROTOCOL=2
 
 # Don't modify the next line
-echo "PROTOCOL=${PROTOCOL}" >> "$GITHUB_ENV"
+echo "PROTOCOL=${PROTOCOL}" >> "$GITHUB_ENV"

main/client.py

@@ -0,0 +1,69 @@
+import socket
+import sys
+
+
+class FTPClient:
+    def __init__(self, host, port):
+        self.host = host
+        self.port = port
+        self.control_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        self.control_socket.connect((self.host, self.port))
+        self.receive_response()  # Recibir mensaje de bienvenida
+
+    def receive_response(self):
+        response = self.control_socket.recv(4096).decode('utf-8')
+        print(response, end='')
+        return response
+
+    def send_command(self, command):
+        self.control_socket.send((command + '\r\n').encode('utf-8'))
+        return self.receive_response()
+
+    def login(self, username, password):
+        self.send_command(f'USER {username}')
+        self.send_command(f'PASS {password}')
+
+    def list_files(self):
+        response = self.send_command('LIST')
+        if "150" in response:
+            return self.receive_response()
+
+    def quit(self):
+        self.send_command('QUIT')
+        self.control_socket.close()
+        print("Conexión cerrada.")
+
+
+def main():
+    if len(sys.argv) != 3:
+        print("Uso: python client.py <servidor> <puerto>")
+        return
+
+    host = sys.argv[1]
+    port = int(sys.argv[2])
+
+    client = FTPClient(host, port)
+
+    while True:
+        try:
+            command = input("ftp> ").strip()
+            if not command:
+                continue
+
+            if command.startswith("login"):
+                _, username, password = command.split()
+                client.login(username, password)
+            elif command == "list":
+                client.list_files()
+
+            elif command == "quit":
+                client.quit()
+                break
+            else:
+                print("Comando no reconocido. Comandos disponibles: login, list, download, upload, quit")
+        except Exception as e:
+            print(f"Error: {e}")
+
+
+if __name__ == "__main__":
+    main()

main/server.py

@@ -0,0 +1,50 @@
+import socket
+import os
+import threading
+
+
+class FTPServer:
+    def __init__(self, host, port):
+        self.host = host
+        self.port = port
+        self.server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        self.server_socket.bind((self.host, self.port))
+        self.server_socket.listen(5)
+        print(f"Servidor FTP escuchando en {self.host}:{self.port}")
+
+    def handle_client(self, client_socket):
+        client_socket.send("220 Bienvenido al Servidor FTP\r\n".encode('utf-8'))
+        while True:
+            data = client_socket.recv(1024).decode('utf-8').strip()
+            if not data:
+                break
+
+            command = data.split(' ')[0].upper()
+            if command == 'USER':
+                client_socket.send("331 Nombre de usuario correcto, se requiere contraseña\r\n".encode('utf-8'))
+            elif command == 'PASS':
+                client_socket.send("230 Usuario autenticado, proceda\r\n".encode('utf-8'))
+            elif command == 'LIST':
+                files = os.listdir('.')
+                client_socket.send("150 Listado de directorio en proceso\r\n".encode('utf-8'))
+                client_socket.send(('\r\n'.join(files) + '\r\n').encode('utf-8'))
+                client_socket.send("226 Listado de directorio completado\r\n".encode('utf-8'))
+            elif command == 'QUIT':
+                client_socket.send("221 Adios\r\n".encode('utf-8'))
+                break
+            else:
+                client_socket.send("500 Comando desconocido\r\n".encode('utf-8'))
+
+        client_socket.close()
+
+    def run(self):
+        while True:
+            client_socket, addr = self.server_socket.accept()
+            print(f"Conexión aceptada de {addr}")
+            client_thread = threading.Thread(target=self.handle_client, args=(client_socket,))
+            client_thread.start()
+
+
+if __name__ == "__main__":
+    server = FTPServer('0.0.0.0', 21)
+    server.run()