client_bonus.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   client_bonus.c                                     :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: gvardaki <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/10/02 09:23:02 by gvardaki          #+#    #+#             */
/*   Updated: 2023/10/02 10:39:27 by gvardaki         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "minitalk.h"

void	ft_send_sig(int pid, char c)
{
	int	ascii;
	int	bin[8];
	int	i;

	ascii = (int)c;
	i = 7;
	while (i >= 0)
	{
		bin[i] = (ascii >> i) & 1;
		i--;
	}
	i = 8;
	while (--i >= 0)
	{
		if (bin[i] == 0)
			kill(pid, SIGUSR1);
		else if (bin[i] == 1)
			kill(pid, SIGUSR2);
		usleep(50);
	}
}

void	handler(int num, siginfo_t *info, void *context)
{
	(void)info;
	(void)context;
	if (num == SIGUSR2)
		write(1, "Message fully received\n", 23);
	exit(1);
}

int	main(int ac, char **av)
{
	int					pid;
	struct sigaction	sa;

	sa.sa_sigaction = handler;
	sa.sa_flags = SA_SIGINFO;
	if (ac != 3)
		write(1, "Arguments error\n", 16);
	else
	{
		pid = ft_atoi(av[1]);
		if (pid < 0 || ft_strlen(av[1]) > 5)
		{
			write(1, "Wrong PID\n", 10);
			exit(1);
		}
		sigaction(SIGUSR2, &sa, NULL);
		while (*av[2])
			ft_send_sig(pid, *av[2]++);
		ft_send_sig(pid, '\0');
	}
	while (1)
		pause();
	return (0);
}