From ef438e1477e436111970d9d6057c59c2fa014604 Mon Sep 17 00:00:00 2001
From: wenngle <wenngle@disroot.org>
Date: Sun, 17 Jan 2021 15:41:35 -0500
Subject: [PATCH] disallow duplicate names

---
 main.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/main.c b/main.c
index 9a25284..b709638 100644
--- a/main.c
+++ b/main.c
@@ -1223,6 +1223,7 @@ handle_input(int fd)
 		players[pid].fd = -1;
 		if (players[pid].stage != PLAYER_STAGE_NAME) {
 			snprintf(buf, sizeof(buf), "Player [%s] disconnected.", players[pid].name);
+			players[pid].name[0] = '\0';
 			printf("Sending disconnection message\n");
 			broadcast(buf, -1);
 		}
@@ -1239,6 +1240,7 @@ handle_input(int fd)
 		players[pid].fd = -1;
 		if (players[pid].stage != PLAYER_STAGE_NAME) {
 			snprintf(buf, sizeof(buf), "Player [%s] left the game.", players[pid].name);
+			players[pid].name[0] = '\0';
 			printf("Sending parting message\n");
 			broadcast(buf, -1);
 		}
@@ -1273,6 +1275,13 @@ handle_input(int fd)
 				write(fd, buf, strlen(buf));
 				return 0;
 			}
+			for (size_t i = 0; i < NUM_PLAYERS; i++) {
+				if (strcmp(players[i].name, buf) == 0) {
+					snprintf(buf, sizeof(buf), "Taken, pick another name\n> ");
+					write(fd, buf, strlen(buf));
+					return 0;
+				}
+			}
 			for (size_t i = 0; i < strlen(buf); i++) {
 				if(!isprint(buf[i])) {
 					snprintf(buf, sizeof(buf), "Invalid char, pick another name\n> ");