fix: allow reusing revoked client names (#1185)

Close #680, close
#652, close
#1024, close
#746

Co-authored-by: Stanislas <git@slange.me>

Author: joelpramos

openvpn-install.sh

@@ -1510,8 +1510,8 @@ function newClient() {
 		read -rp "Select an option [1-2]: " -e -i 1 PASS
 	done
 
-	CLIENTEXISTS=$(tail -n +2 /etc/openvpn/easy-rsa/pki/index.txt | grep -c -E "/CN=$CLIENT\$")
-	if [[ $CLIENTEXISTS == '1' ]]; then
+	CLIENTEXISTS=$(tail -n +2 /etc/openvpn/easy-rsa/pki/index.txt | grep -E "^V" | grep -c -E "/CN=$CLIENT\$")
+	if [[ $CLIENTEXISTS != '0' ]]; then
 		log_error "The specified client CN was already found in easy-rsa, please choose another name."
 		exit
 	else