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samba-mirror/source3/lib/util_names.c
Stefan Metzmacher 52190982de CVE-2020-25717: s3:lib: add lp_allow_trusted_domains() logic to is_allowed_domain()
is_allowed_domain() is a central place we already use to
trigger NT_STATUS_AUTHENTICATION_FIREWALL_FAILED, so
we can add additional logic there.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14801
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14556

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2021-11-09 19:45:33 +00:00

87 lines
2.3 KiB
C

/*
Unix SMB/CIFS implementation.
Samba utility functions
Copyright (C) Andrew Tridgell 1992-1998
Copyright (C) Jeremy Allison 2001-2007
Copyright (C) Simo Sorce 2001
Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
Copyright (C) James Peach 2006
Copyright (C) Andrew Bartlett 2010-2011
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
/******************************************************************
get the default domain/netbios name to be used when dealing
with our passdb list of accounts
******************************************************************/
const char *get_global_sam_name(void)
{
if (IS_DC) {
return lp_workgroup();
}
return lp_netbios_name();
}
/******************************************************************
Get the default domain/netbios name to be used when
testing authentication.
******************************************************************/
const char *my_sam_name(void)
{
if (lp_server_role() == ROLE_STANDALONE) {
return lp_netbios_name();
}
return lp_workgroup();
}
bool is_allowed_domain(const char *domain_name)
{
const char **ignored_domains = NULL;
const char **dom = NULL;
ignored_domains = lp_parm_string_list(-1,
"winbind",
"ignore domains",
NULL);
for (dom = ignored_domains; dom != NULL && *dom != NULL; dom++) {
if (gen_fnmatch(*dom, domain_name) == 0) {
DBG_NOTICE("Ignoring domain '%s'\n", domain_name);
return false;
}
}
if (lp_allow_trusted_domains()) {
return true;
}
if (strequal(lp_workgroup(), domain_name)) {
return true;
}
if (is_myname(domain_name)) {
return true;
}
DBG_NOTICE("Not trusted domain '%s'\n", domain_name);
return false;
}