From f18e8e8221f3e34d1076d1cab3722bf88197dae3 Mon Sep 17 00:00:00 2001
From: Kage1 <2062390+Kage1@users.noreply.github.com>
Date: Tue, 30 Mar 2021 20:05:06 -0500
Subject: [PATCH] Restrict IPv var to 4 or 6

Restrict the grep to only 4 or 6 to prevent unintended command line switch from being executed.
---
 tinystatus | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tinystatus b/tinystatus
index cb6f8d2..5e841fb 100755
--- a/tinystatus
+++ b/tinystatus
@@ -25,7 +25,7 @@ check(){
     name="${3}"
     expectedcode="${4}"
 
-    IPv="$(echo "${ctype}" | grep -o '[0-9]$')"
+    IPv="$(echo "${ctype}" | grep -o '[46]$')"
     case "${ctype}" in
         http*)
             statuscode="$(curl -${IPv}sSkLo /dev/null -H "${useragent}" -m "${timeout}" -w "%{http_code}" "${host}" 2> "${tmp}/ko/${name}.error")";;