From 3985929b6dcd9f0d642a7e57d71b3e216afa7369 Mon Sep 17 00:00:00 2001
From: sin <sin@2f30.org>
Date: Thu, 17 Apr 2014 17:01:57 +0100
Subject: [PATCH] Error out if there are multiple separators in sysctl

---
 sysctl.c | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/sysctl.c b/sysctl.c
index 6a764e5..159180a 100644
--- a/sysctl.c
+++ b/sysctl.c
@@ -131,17 +131,27 @@ main(int argc, char *argv[])
 		usage();
 
 	for (i = 0; i < argc; i++) {
-		value = NULL;
-		variable = argv[i];
-		p = strchr(variable, '=');
+		for (p = argv[i]; *p; p++) {
+			if (p[0] == '.' && p[1] == '.') {
+				weprintf("malformed input: %s\n", argv[i]);
+				break;
+			}
+		}
+		if (*p != '\0')
+			continue;
+		p = strchr(argv[i], '=');
 		if (p) {
 			if (p[1] == '\0') {
-				weprintf("malformed sysctl: %s\n", argv[i]);
+				weprintf("malformed input: %s\n", argv[i]);
 				continue;
 			}
 			*p = '\0';
 			value = &p[1];
+		} else {
+			value = NULL;
 		}
+		variable = argv[i];
+
 		if (variable) {
 			if (value) {
 				if (setsysctl(variable, value) < 0) {