diff options
| -rw-r--r-- | misc.c | 5 |
1 files changed, 3 insertions, 2 deletions
@@ -1,4 +1,4 @@ -/* $OpenBSD: misc.c,v 1.197 2024/09/25 01:24:04 djm Exp $ */ +/* $OpenBSD: misc.c,v 1.198 2024/10/24 03:14:37 djm Exp $ */ /* * Copyright (c) 2000 Markus Friedl. All rights reserved. * Copyright (c) 2005-2020 Damien Miller. All rights reserved. @@ -2406,7 +2406,8 @@ valid_domain(char *name, int makelower, const char **errstr) strlcpy(errbuf, "empty domain name", sizeof(errbuf)); goto bad; } - if (!isalpha((u_char)name[0]) && !isdigit((u_char)name[0])) { + if (!isalpha((u_char)name[0]) && !isdigit((u_char)name[0]) && + name[0] != '_' /* technically invalid, but common */) { snprintf(errbuf, sizeof(errbuf), "domain name \"%.100s\" " "starts with invalid character", name); goto bad; |