「✨」 feat: working bitch

.gitignore

@@ -1 +1,2 @@
 .direnv
+a.out

mini_serv.c

@@ -1,4 +1,5 @@
 #include <netinet/in.h>
+#include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -22,23 +23,102 @@ int sockfd;
 
 fd_set main_fd, read_fd;
 
+void send_all();
+
+int extract_message(char **buf, char **msg) {
+	char *newbuf;
+	int	  i;
+
+	*msg = 0;
+	if (*buf == 0)
+		return (0);
+	i = 0;
+	while ((*buf)[i]) {
+		if ((*buf)[i] == '\n') {
+			newbuf = calloc(1, sizeof(*newbuf) * (strlen(*buf + i + 1) + 1));
+			if (newbuf == 0)
+				return (-1);
+			strcpy(newbuf, *buf + i + 1);
+			*msg = *buf;
+			(*msg)[i + 1] = 0;
+			*buf = newbuf;
+			return (1);
+		}
+		i++;
+	}
+	return (0);
+}
+
+char *str_join(char *buf, char *add) {
+	char *newbuf;
+	int	  len;
+
+	if (buf == 0)
+		len = 0;
+	else
+		len = strlen(buf);
+	newbuf = malloc(sizeof(*newbuf) * (len + strlen(add) + 1));
+	if (newbuf == 0)
+		return (0);
+	newbuf[0] = 0;
+	if (buf != 0)
+		strcat(newbuf, buf);
+	free(buf);
+	strcat(newbuf, add);
+	return (newbuf);
+}
+
 void append_client(int cli_fd) {
 	lastid++;
 	clients[cli_fd].id = lastid;
 	clients[cli_fd].msg = NULL;
 	FD_SET(cli_fd, &main_fd);
+	bzero(send_buf, 3000);
+	sprintf(send_buf, "server: client %d just arrived\n", lastid);
+	send_all(cli_fd);
 }
 
-void send_all() {
+void rm_client(int cli_fd) {
+	FD_CLR(cli_fd, &read_fd);
+	sprintf(send_buf, "server: client %d, just left\n", clients[cli_fd].id);
+	send_all(cli_fd);
+	clients[cli_fd].id = -1;
+	if (clients[cli_fd].msg != NULL) {
+		free(clients[cli_fd].msg);
+		clients[cli_fd].msg = NULL;
+	}
+	FD_CLR(cli_fd, &main_fd);
+	close(cli_fd);
+}
+
+int read_client(int fd) {
+	char tmp[3000];
+	int	 bytes;
+	if ((bytes = recv(fd, tmp, 3000, 0)) <= 0)
+		return (rm_client(fd), 0);
+	tmp[bytes] = 0;
+	clients[fd].msg = str_join(clients[fd].msg, tmp);
+	char *line = 0;
+	while (extract_message(&clients[fd].msg, &line)) {
+		bzero(send_buf, 3000);
+		sprintf(send_buf, "client %d: %s", clients[fd].id, line);
+		send_all(fd);
+		free(line);
+	}
+	return 1;
+}
+
+void send_all(int cli_fd) {
 	size_t len = strlen(send_buf);
+	printf("%s", send_buf);
 
 	for (int i = 0; i <= maxfd; i++)
-		if (FD_ISSET(i, &read_fd))
+		if (FD_ISSET(i, &main_fd) != 0 && i != cli_fd && i != sockfd)
 			send(i, send_buf, len, 0);
 }
 
 int send_error(void) {
-	for (int i = 0; i < FD_SETSIZE; i++)
+	for (int i = 0; i < maxfd; i++)
 		if (FD_ISSET(i, &main_fd))
 			close(i);
 	close(sockfd);
@@ -66,7 +146,7 @@ int main(int ac, char **av) {
 	if (bind(sockfd, (struct sockaddr *)&servaddr, sizeof(servaddr)) != 0)
 		return (send_error());
 
-	if (listen(sockfd, 10) != 0)
+	if (listen(sockfd, SOMAXCONN) != 0)
 		return (send_error());
 
 	FD_ZERO(&main_fd);
@@ -91,11 +171,10 @@ int main(int ac, char **av) {
 					if (cli_fd > maxfd)
 						maxfd = cli_fd;
 					append_client(cli_fd);
-					bzero(send_buf, 3000);
-					sprintf(send_buf, "server: client %d just arrived\n",
-							lastid);
-					send_all();
+					break;
 				} else {
+					if (!read_client(i))
+						break;
 				}
 			}
 		}