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Check leading white spaces in :protocol

This commit is contained in:
Tatsuhiro Tsujikawa 2022-09-06 21:17:46 +09:00
parent 1340b296dd
commit a94d2de89a
1 changed files with 19 additions and 0 deletions
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19
lib/nghttp2_http.c
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@ -336,6 +336,16 @@ static int check_scheme(const uint8_t *value, size_t len) {
return 1;
}
static int lws(const uint8_t *s, size_t n) {
size_t i;
for (i = 0; i < n; ++i) {
if (s[i] != ' ' && s[i] != '\t') {
return 0;
}
}
return 1;
}
int nghttp2_http_on_header(nghttp2_session *session, nghttp2_stream *stream,
nghttp2_frame *frame, nghttp2_hd_nv *nv,
int trailer) {
@ -385,6 +395,15 @@ int nghttp2_http_on_header(nghttp2_session *session, nghttp2_stream *stream,
case NGHTTP2_TOKEN__SCHEME:
rv = check_scheme(nv->value->base, nv->value->len);
break;
case NGHTTP2_TOKEN__PROTOCOL:
/* Check the value consists of just white spaces, which was done
in check_pseudo_header before
nghttp2_check_header_value_rfc9113 has been introduced. */
if (lws(nv->value->base, nv->value->len)) {
rv = 0;
break;
}
/* fall through */
default:
rv = nghttp2_check_header_value_rfc9113(nv->value->base, nv->value->len);
}