From 391adcc526d8e3f7ea3514bd4f1909d70ea6ef0c Mon Sep 17 00:00:00 2001
From: Marcelo Araujo <araujo@FreeBSD.org>
Date: Mon, 11 Jul 2016 03:34:32 +0000
Subject: [PATCH] Do not allow whitespace in macro names.

Obtained from:	OpenBSD (r1.19).
---
 usr.sbin/ypldap/parse.y | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/usr.sbin/ypldap/parse.y b/usr.sbin/ypldap/parse.y
index 15d3ff202320..b97af1dfa801 100644
--- a/usr.sbin/ypldap/parse.y
+++ b/usr.sbin/ypldap/parse.y
@@ -144,6 +144,14 @@ include		: INCLUDE STRING			{
 		;
 
 varset		: STRING '=' STRING			{
+			char *s = $1;
+			while (*s++) {
+				if (isspace((unsigned char) *s)) {
+					yyerror("macro name cannot contain "
+					  "whitespace");
+					YYERROR;
+				}
+			}
 			if (symset($1, $3, 0) == -1)
 				fatal("cannot store variable");
 			free($1);