Treat an empty argument as an error, instead of fetching the

contents of the root directory.

MFC after:	1 week

1 files changed, 5 insertions, 0 deletions

diff --git a/usr.bin/fetch/fetch.c b/usr.bin/fetch/fetch.c
index 2512a2e..7553bd8 100644
--- a/usr.bin/fetch/fetch.c
+++ b/usr.bin/fetch/fetch.c
@@ -340,6 +340,11 @@ fetch(char *URL, const char *path)
 		fetchDebug = 1;
 
 	/* parse URL */
+	url = NULL;
+	if (*URL == '\0') {
+		warnx("empty URL");
+		goto failure;
+	}
 	if ((url = fetchParseURL(URL)) == NULL) {
 		warnx("%s: parse error", URL);
 		goto failure;