From: Michael Brown <mcb30@ipxe.org>
Date: Fri, 19 Jun 2020 16:29:46 +0000 (+0100)
Subject: [parseopt] Treat empty integer strings in user input as invalid
X-Git-Tag: secboot-ioactive-20200603~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8830f2f3514751e702199600fa6d0c42522a709a;p=thirdparty%2Fipxe.git

[parseopt] Treat empty integer strings in user input as invalid

Signed-off-by: Michael Brown <mcb30@ipxe.org>
---

diff --git a/src/core/parseopt.c b/src/core/parseopt.c
index 3ddf94f3d..007080088 100644
--- a/src/core/parseopt.c
+++ b/src/core/parseopt.c
@@ -93,7 +93,7 @@ int parse_integer ( char *text, unsigned int *value ) {
 
 	/* Parse integer */
 	*value = strtoul ( text, &endp, 0 );
-	if ( *endp ) {
+	if ( *endp || ( ! *text ) ) {
 		printf ( "\"%s\": invalid integer value\n", text );
 		return -EINVAL_INTEGER;
 	}