client.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   client.c                                           :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: omkuzu <omkuzu@student.42.fr>              +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/12/17 16:36:08 by omkuzu            #+#    #+#             */
/*   Updated: 2024/12/17 17:02:32 by omkuzu           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include <stdio.h>
#include <unistd.h>
#include <signal.h>
#include <sys/types.h>

static int	ft_atoi(const char *str)
{
	int	i;
	int	result;

	i = 0;
	result = 0;
	while (str[i] >= '0' && str[i] <= '9')
	{
		result = (result * 10) + (str[i] - 48);
		i++;
	}
	return (result);
}

static void	send_signal(pid_t id, char *message)
{
	int		i;
	int		j;
	char	result;

	i = 0;
	while (message[i] != '\0')
	{
		j = 7;
		while (j >= 0)
		{
			result = (message[i] >> j) & 1;
			if (result == 1)
				kill(id, SIGUSR1);
			else if (result == 0)
				kill(id, SIGUSR2);
			usleep(50);
			j--;
		}
		i++;
	}
}

int	main(int argc, char *argv[])
{
	pid_t	server_id;

	if (argc == 3)
	{
		server_id = ft_atoi(argv[1]);
		if (server_id <= 0)
		{
			write(1, "Error: Invalid server PID.\n", 28);
			return (1);
		}
		send_signal(server_id, argv[2]);
	}
	else
		write(1, "İstenen bagimsiz degisken sayisi girilmedi\n", 43);
	return (0);
}