From 4eada97796ddda887c932ec65225faad31380a29 Mon Sep 17 00:00:00 2001
From: Lukas Jiriste <ljiriste@student.42prague.com>
Date: Sat, 20 Jan 2024 18:21:29 +0100
Subject: [PATCH] Implement client, change Makefile accordingly

Because of signals merging, client now waits for 1000 us between bits
for server to "certainly" handle the signal. This could use some tuning
but a better protocol for communications would be better.
---
 Makefile     | 24 +++++++++++++++------
 src/client.c | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/server.c |  5 +++--
 3 files changed, 81 insertions(+), 8 deletions(-)
 create mode 100644 src/client.c

diff --git a/Makefile b/Makefile
index 658fbf2..e79a212 100644
--- a/Makefile
+++ b/Makefile
@@ -12,20 +12,31 @@ INCLUDE := $(addprefix -I, $(INCDIR) $(SUBINCDIR))
 
 SRCDIR := src
 
-SOURCES :=	server.c			\
+CLISOURCES :=	client.c			\
 
-SOURCES := $(addprefix $(SRCDIR)/, $(SOURCES))
+CLISOURCES := $(addprefix $(SRCDIR)/, $(CLISOURCES))
 
-OBJECTS := $(SOURCES:.c=.o)
+CLIOBJECTS := $(CLISOURCES:.c=.o)
 
-NAME := server
+SERVSOURCES :=	server.c			\
+
+SERVSOURCES := $(addprefix $(SRCDIR)/, $(SERVSOURCES))
+
+SERVOBJECTS := $(SERVSOURCES:.c=.o)
+
+OBJECTS := $(SERVOBJECTS) $(CLIOBJECTS)
+
+NAME := server client
 
 all : $(NAME)
 
 debug : CFLAGS += -g
 debug : $(NAME)
 
-$(NAME) : $(OBJECTS) Libft/libft.a
+server : $(SERVOBJECTS) Libft/libft.a
+	$(CC) $(CFLAGS) -o $@ $^
+
+client : $(CLIOBJECTS) Libft/libft.a
 	$(CC) $(CFLAGS) -o $@ $^
 
 Libft/libft.a :
@@ -45,7 +56,8 @@ clean :
 	$(RM) $(OBJECTS)
 	$(foreach proj, $(SUBPROJECTS), $(MAKE) -C $(proj) clean)
 
-fclean : clean
+fclean :
+	$(RM) $(OBJECTS)
 	$(RM) $(NAME)
 	$(foreach proj, $(SUBPROJECTS), $(MAKE) -C $(proj) fclean)
 
diff --git a/src/client.c b/src/client.c
new file mode 100644
index 0000000..c9e2a37
--- /dev/null
+++ b/src/client.c
@@ -0,0 +1,60 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   client.c                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: ljiriste <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2024/01/20 17:15:06 by ljiriste          #+#    #+#             */
+/*   Updated: 2024/01/20 18:14:47 by ljiriste         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+#include <limits.h>
+#include <signal.h>
+#include <unistd.h>
+
+void	send(pid_t server_pid, const char *message)
+{
+	int		char_bits_sent;
+	int		char_ind;
+
+	char_bits_sent = 0;
+	char_ind = 0;
+	while (1)
+	{
+		if (message[char_ind] & 1 << char_bits_sent)
+			kill(server_pid, SIGUSR1);
+		else
+			kill(server_pid, SIGUSR2);
+		++char_bits_sent;
+		if (char_bits_sent == CHAR_BIT && message[char_ind] == '\0')
+			break;
+		if (char_bits_sent == CHAR_BIT)
+			++char_ind;
+		char_bits_sent %= CHAR_BIT;
+		usleep(1000);
+	}
+	return ;
+}
+
+int	main(int argc, char **argv)
+{
+	pid_t	server_pid;
+
+	if (argc != 3)
+	{
+		ft_printf("Invalid number of args. Th call should look like:\n"
+				"client SERVER_PID MESSAGE\n");
+		return (0);
+	}
+	server_pid = ft_atoi(argv[1]);
+	if (kill(server_pid, 0))
+	{
+		ft_printf("%i is not a valid PID.\n", server_pid);
+		return (0);
+	}
+	send(server_pid, argv[2]);
+	return (0);
+}
diff --git a/src/server.c b/src/server.c
index 98e9ba5..cc4aa65 100644
--- a/src/server.c
+++ b/src/server.c
@@ -1,12 +1,12 @@
 /* ************************************************************************** */
 /*                                                                            */
 /*                                                        :::      ::::::::   */
-/*   main.c                                             :+:      :+:    :+:   */
+/*   server.c                                           :+:      :+:    :+:   */
 /*                                                    +:+ +:+         +:+     */
 /*   By: ljiriste <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2024/01/20 15:12:04 by ljiriste          #+#    #+#             */
-/*   Updated: 2024/01/20 17:06:28 by ljiriste         ###   ########.fr       */
+/*   Updated: 2024/01/20 18:12:40 by ljiriste         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -68,6 +68,7 @@ int	main(void)
 		if (g_transfer.transfer_done)
 		{
 			ft_printf(g_transfer.string.vec);
+			ft_printf("\n");
 			ft_vec_forget_range(&g_transfer.string, g_transfer.string.size, 0);
 			g_transfer.transfer_done = 0;
 		}
-- 
2.30.2