/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   main.c                                             :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: tomoron <tomoron@student.42angouleme.fr>   +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2025/04/24 00:03:56 by tomoron           #+#    #+#             */
/*   Updated: 2025/08/08 22:30:18 by tomoron          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "includes/ft_ping.h"

int g_stop = 0;

void show_help(t_settings *set, char *name)
{
	set->stop = 1;
	printf("Usage: %s %s", name, HELP_MESSAGE);
}

int init_socket(char *name)
{
	int res;

	res = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP);
	if(res == -1)
	{
		if(errno == EPERM)
			fprintf(stderr, "%s: socket creation permission denied, make sure you are runing as root\n", name);
		else
			fprintf(stderr, "%s: can't initialize socket\n", name);
		return(-1);
	}
	return(res);
}

uint16_t get_id(void)
{
	struct timeval time;
	uint16_t res;

	gettimeofday(&time,0);
	res = (uint8_t)time.tv_sec;
	res |= (uint8_t)time.tv_usec << 8;
	return(res);
	
}

void signal_handler(int signum)
{
	(void)signum;
	g_stop = 1;
}

int main(int argc, char **argv)
{
	t_settings settings;

	settings = parse_args(argc, argv);
	if(settings.stop)
		goto early_stop;
	settings.socket = init_socket(argv[0]);
	settings.id = get_id();
	settings.name = argv[0];
	signal(SIGINT, signal_handler);
	if(settings.stop || settings.err || settings.socket == -1)
	{
early_stop:
		free_hosts(settings.hosts);
		return((settings.err != 0) * 64);
	}
	if(!settings.hosts)
	{
		fprintf(stderr, "%s: missing host operand\n", argv[0]);
		return(64);
	}
	send_pings(&settings);
	free_hosts(settings.hosts);
	return(0);
}