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')
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) {
--
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