ew

src/client/client.c

@@ -0,0 +1,52 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   client.c                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: yantoine <yantoine@student.42.fr>          +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/04/10 16:51:00 by yantoine          #+#    #+#             */
+/*   Updated: 2024/05/17 16:13:47 by yantoine         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "minitalk.h"
+
+static void	pausing(int signum)
+{
+	(void)signum;
+}
+
+static void	send_bits(int pid, char c)
+{
+	int	bit;
+
+	usleep(50);
+	bit = 0;
+	while (bit < 8)
+	{
+		if ((c & (0x01 << bit)) != 0)
+			kill(pid, SIGUSR1);
+		else
+			kill(pid, SIGUSR2);
+		signal(SIGUSR1, pausing);
+		pause();
+		bit++;
+	}
+}
+
+int	main(int argc, char **argv)
+{
+	int	i;
+
+	if (argc != 3 || !ft_strlen(argv[2]) || ft_atoi(argv[1]) <= 0)
+		return (1);
+	i = 0;
+	while (argv[2][i] != '\0')
+	{
+		send_bits(ft_atoi(argv[1]), argv[2][i]);
+		i++;
+	}
+	send_bits(ft_atoi(argv[1]), '\n');
+	send_bits(ft_atoi(argv[1]), '\0');
+}

src/server/server.c

@@ -0,0 +1,127 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   server.c                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hexplor <hexplor@student.42.fr>            +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/03/26 22:48:59 by yantoine          #+#    #+#             */
+/*   Updated: 2024/05/13 21:22:13 by hexplor          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "minitalk.h"
+
+char	*g_str;
+
+static void	print_hello(void)
+{
+	ft_printf("                               , ----.\n");
+	ft_printf("                              -  -     `\n");
+	ft_printf("                        ,__.,'           \\\n");
+	ft_printf("                      .'                 *`\\\n");
+	ft_printf("                     /       |   |     / **\\\n");
+	ft_printf("                    .                 / ****.\n");
+	ft_printf("                    |    mm           | ****|\n");
+	ft_printf("                     \\                | ****|\n");
+	ft_printf("                      ` ._______      \\ ****/\n");
+	ft_printf("                               \\      /`---'\n");
+	ft_printf("                                 \\___(\n");
+	ft_printf("                                 /~~~~\\\n");
+	ft_printf("                                /      \\\n");
+	ft_printf("                               /      | \\\n");
+	ft_printf("                              |       |  \\\n");
+	ft_printf("                    , ~~ .    |, ~~ . |  |\\\n");
+	ft_printf("                   ( |||| )   ( |||| )(,,,)`\n");
+	ft_printf("                  ( |||||| )-( |||||| )    | ^\n");
+	ft_printf("                  ( |||||| ) ( |||||| )    |'/\n");
+	ft_printf("                  ( |||||| )-( |||||| )___,'-\n");
+	ft_printf("                   ( |||| )   ( |||| )\n");
+	ft_printf("                    ` ~~ '     ` ~~ '\n");
+}
+
+char	*ft_strcpy(char *dest, const char *src)
+{
+	int	i;
+
+	i = 0;
+	while (src[i] != '\0')
+	{
+		dest[i] = src[i];
+		i++;
+	}
+	dest[i] = '\0';
+	return (dest);
+}
+
+static char	*add_char_to_string(char *str, char c)
+{
+	int		len;
+	char	*new_str;
+
+	len = 0;
+	new_str = NULL;
+	if (str == NULL)
+	{
+		str = (char *)malloc(2 * sizeof(char));
+		str[0] = c;
+		str[1] = '\0';
+	}
+	else
+	{
+		len = ft_strlen(str);
+		new_str = (char *)malloc((len + 2) * sizeof(char));
+		ft_strcpy(new_str, str);
+		new_str[len] = c;
+		new_str[len + 1] = '\0';
+		free(str);
+		str = new_str;
+	}
+	return (str);
+}
+
+static void	action(int signum, siginfo_t *info, void *context)
+{
+	static int	current_byte;
+	static int	bit_count;
+
+	(void)context;
+	if (signum == SIGUSR1)
+		current_byte |= (0x01 << bit_count);
+	bit_count++;
+	if (bit_count == 8)
+	{
+		if (current_byte == '\0')
+		{
+			ft_printf("%s", g_str);
+			free(g_str);
+			g_str = NULL;
+			kill(info->si_pid, SIGUSR1);
+			current_byte = 0;
+			bit_count = 0;
+			return ;
+		}
+		g_str = add_char_to_string(g_str, current_byte);
+		current_byte = 0;
+		bit_count = 0;
+	}
+	usleep(50);
+	kill(info->si_pid, SIGUSR1);
+}
+
+int	main(void)
+{
+	struct sigaction	sa;
+
+	print_hello();
+	sa.sa_sigaction = action;
+	sa.sa_flags = SA_SIGINFO;
+	ft_printf("pid: %d\n", getpid());
+	while (1)
+	{
+		sigaction(SIGUSR1, &sa, NULL);
+		sigaction(SIGUSR2, &sa, NULL);
+		pause();
+	}
+	return (0);
+}