From 5af4557c03a6f7087975995bca43d6969fa9ddb4 Mon Sep 17 00:00:00 2001
From: randomuser <randomuser@tilde.club>
Date: Wed, 17 Feb 2021 19:42:23 -0600
Subject: [PATCH] check uid before executing netcat

---
 shellgopher.sh | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/shellgopher.sh b/shellgopher.sh
index 1caca7a..d912e76 100644
--- a/shellgopher.sh
+++ b/shellgopher.sh
@@ -11,6 +11,15 @@ createsrv () {
 
   nc -l "$1" <"$2" >>"$3" & exec 3>"$2"
 }
+die () {
+  # $1 - error message
+  printf "%s\n" $1
+  exit 1
+}
+checkuid () {
+  [ $(whoami) = "root" ] && \
+    die "You must execute shellgopher as root."
+}
 writefile () {
   # $1 - file
   foo cat "$1" >&3
@@ -34,6 +43,7 @@ tmplocation=$(mktmp)
 writelocation="${tmplocation}/write"
 readlocation="${tmplocation}/read"
 
+checkuid
 createsrv 70 "${writelocation}" "${readlocation}"
 printf "server created\n"
 while true; do