From e0d7dc5dfd7bdaa62b6bc18e9c1cce00bbe08577 Mon Sep 17 00:00:00 2001
From: Tavian Barnes <tavianator@tavianator.com>
Date: Sat, 9 Dec 2023 17:02:57 -0500
Subject: parse: Reject integers that start with whitespace

---
 src/parse.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'src/parse.c')

diff --git a/src/parse.c b/src/parse.c
index 13e65bc..778fc68 100644
--- a/src/parse.c
+++ b/src/parse.c
@@ -565,13 +565,17 @@ enum int_flags {
  * Parse an integer.
  */
 static const char *parse_int(const struct parser_state *state, char **arg, const char *str, void *result, enum int_flags flags) {
-	char *endptr;
+	// strtoll() skips leading spaces, but we want to reject them
+	if (xisspace(str[0])) {
+		goto bad;
+	}
 
 	int base = flags & IF_BASE_MASK;
 	if (base == 0) {
 		base = 10;
 	}
 
+	char *endptr;
 	errno = 0;
 	long long value = strtoll(str, &endptr, base);
 	if (errno != 0) {
-- 
cgit v1.2.3