From 39ab7a9055a3a75dc06bec4a6f4daefb262f139b Mon Sep 17 00:00:00 2001
From: bx <bx@tilde.town>
Date: Sat, 2 Apr 2022 11:59:31 +0000
Subject: [PATCH] commands take buf, bad commmands dont segfault

---
 c_quit.c   | 3 ++-
 commands.c | 2 +-
 efn.h      | 7 +++++--
 globals.h  | 0
 main.c     | 5 +++--
 5 files changed, 11 insertions(+), 6 deletions(-)
 create mode 100644 globals.h

diff --git a/c_quit.c b/c_quit.c
index 9bba0bc..9160d04 100644
--- a/c_quit.c
+++ b/c_quit.c
@@ -1,4 +1,5 @@
 void
-c_quit() {
+c_quit(char *b) {
 	exit(0);
 }
+
diff --git a/commands.c b/commands.c
index 0de604c..2c549e8 100644
--- a/commands.c
+++ b/commands.c
@@ -1,3 +1,3 @@
-void (*commands[256])() = {
+void (*commands[256])(char *) = {
 NULL,
 ['q'] = c_quit,
diff --git a/efn.h b/efn.h
index fb9bd37..e45ebfd 100644
--- a/efn.h
+++ b/efn.h
@@ -1,4 +1,7 @@
-extern void (*commands[256])();
+#include <stdlib.h>
+#include "globals.h"
 
-void c_quit();
+extern void (*commands[256])(char *);
+
+void c_quit(char *);
 
diff --git a/globals.h b/globals.h
new file mode 100644
index 0000000..e69de29
diff --git a/main.c b/main.c
index e36e221..a231a38 100644
--- a/main.c
+++ b/main.c
@@ -1,10 +1,11 @@
 int
 main(int argc, char **argv) {
 	static char buf[256];
-	while (1) {
+	while(1) {
 		char *com = fgets(buf, sizeof(buf), stdin);
 		if (com != NULL) {
-			commands[com[0]]();
+			if (commands[com[0]] != NULL) commands[com[0]](buf);
+			else puts("invalid command.");
 		}
 	}
 	return 0;