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91c024dfd8
This should make it identical. Signed-off-by: Jeremy Allison <jra@samba.org> Reviewed-by: Volker Lendecke <vl@samba.org> Autobuild-User(master): Volker Lendecke <vl@samba.org> Autobuild-Date(master): Wed Sep 8 06:38:21 UTC 2021 on sn-devel-184
125 lines
3.5 KiB
C
125 lines
3.5 KiB
C
/*
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Unix SMB/CIFS implementation.
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Authentication utility functions
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Copyright (C) Andrew Tridgell 1992-1998
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Copyright (C) Andrew Bartlett 2001
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Copyright (C) Jeremy Allison 2000-2001
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Copyright (C) Rafal Szczesniak 2002
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Copyright (C) Volker Lendecke 2006
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "auth.h"
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#include "nsswitch/winbind_client.h"
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#include "passdb.h"
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#undef DBGC_CLASS
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#define DBGC_CLASS DBGC_AUTH
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/***************************************************************************
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Is the incoming username our own machine account ?
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If so, the connection is almost certainly from winbindd.
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***************************************************************************/
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static bool is_our_machine_account(const char *username)
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{
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bool ret;
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size_t ulen = strlen(username);
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const char *nb_name = lp_netbios_name();
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size_t nb_namelen = strlen(nb_name);
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if (ulen == 0 || username[ulen-1] != '$') {
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return false;
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}
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if (nb_namelen != ulen-1) {
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return false;
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}
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ret = strnequal(username, nb_name, ulen-1);
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return ret;
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}
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/***************************************************************************
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Make (and fill) a user_info struct from a struct samu
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***************************************************************************/
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NTSTATUS make_server_info_sam(TALLOC_CTX *mem_ctx,
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struct samu *sampass,
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struct auth_serversupplied_info **pserver_info)
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{
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struct passwd *pwd;
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struct auth_serversupplied_info *server_info;
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const char *username = pdb_get_username(sampass);
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TALLOC_CTX *tmp_ctx = talloc_stackframe();
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NTSTATUS status;
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server_info = make_server_info(tmp_ctx);
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if (server_info == NULL) {
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status = NT_STATUS_NO_MEMORY;
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goto out;
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}
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pwd = Get_Pwnam_alloc(tmp_ctx, username);
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if (pwd == NULL) {
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DEBUG(1, ("User %s in passdb, but getpwnam() fails!\n",
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pdb_get_username(sampass)));
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status = NT_STATUS_NO_SUCH_USER;
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goto out;
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}
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status = samu_to_SamInfo3(server_info,
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sampass,
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lp_netbios_name(),
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&server_info->info3,
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&server_info->extra);
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if (!NT_STATUS_IS_OK(status)) {
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goto out;
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}
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server_info->unix_name = talloc_move(server_info, &pwd->pw_name);
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server_info->utok.gid = pwd->pw_gid;
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server_info->utok.uid = pwd->pw_uid;
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if (IS_DC && is_our_machine_account(username)) {
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/*
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* This is a hack of monstrous proportions.
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* If we know it's winbindd talking to us,
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* we know we must never recurse into it,
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* so turn off contacting winbindd for this
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* entire process. This will get fixed when
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* winbindd doesn't need to talk to smbd on
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* a PDC. JRA.
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*/
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(void)winbind_off();
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DEBUG(10, ("make_server_info_sam: our machine account %s "
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"turning off winbindd requests.\n", username));
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}
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DEBUG(5,("make_server_info_sam: made server info for user %s -> %s\n",
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pdb_get_username(sampass), server_info->unix_name));
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*pserver_info = talloc_move(mem_ctx, &server_info);
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status = NT_STATUS_OK;
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out:
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talloc_free(tmp_ctx);
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return status;
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}
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