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https://github.com/samba-team/samba.git
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c136b84f0d
Guenther
1403 lines
34 KiB
C
1403 lines
34 KiB
C
/*
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Unix SMB/CIFS implementation.
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Winbind daemon for ntdom nss module
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Copyright (C) Tim Potter 2000-2001
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Copyright (C) 2001 by Martin Pool <mbp@samba.org>
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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 "winbindd.h"
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#include "secrets.h"
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#undef DBGC_CLASS
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#define DBGC_CLASS DBGC_WINBIND
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extern struct winbindd_methods cache_methods;
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/**
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* @file winbindd_util.c
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*
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* Winbind daemon for NT domain authentication nss module.
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**/
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/* The list of trusted domains. Note that the list can be deleted and
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recreated using the init_domain_list() function so pointers to
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individual winbindd_domain structures cannot be made. Keep a copy of
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the domain name instead. */
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static struct winbindd_domain *_domain_list = NULL;
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struct winbindd_domain *domain_list(void)
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{
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/* Initialise list */
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if ((!_domain_list) && (!init_domain_list())) {
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smb_panic("Init_domain_list failed");
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}
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return _domain_list;
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}
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/* Free all entries in the trusted domain list */
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static void free_domain_list(void)
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{
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struct winbindd_domain *domain = _domain_list;
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while(domain) {
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struct winbindd_domain *next = domain->next;
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DLIST_REMOVE(_domain_list, domain);
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SAFE_FREE(domain);
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domain = next;
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}
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}
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static bool is_internal_domain(const struct dom_sid *sid)
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{
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if (sid == NULL)
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return False;
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return (sid_check_is_domain(sid) || sid_check_is_builtin(sid));
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}
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static bool is_in_internal_domain(const struct dom_sid *sid)
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{
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if (sid == NULL)
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return False;
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return (sid_check_is_in_our_domain(sid) || sid_check_is_in_builtin(sid));
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}
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/* Add a trusted domain to our list of domains */
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static struct winbindd_domain *add_trusted_domain(const char *domain_name, const char *alt_name,
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struct winbindd_methods *methods,
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const struct dom_sid *sid)
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{
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struct winbindd_domain *domain;
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const char *alternative_name = NULL;
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char *idmap_config_option;
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const char *param;
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const char **ignored_domains, **dom;
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ignored_domains = lp_parm_string_list(-1, "winbind", "ignore domains", NULL);
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for (dom=ignored_domains; dom && *dom; dom++) {
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if (gen_fnmatch(*dom, domain_name) == 0) {
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DEBUG(2,("Ignoring domain '%s'\n", domain_name));
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return NULL;
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}
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}
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/* ignore alt_name if we are not in an AD domain */
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if ( (lp_security() == SEC_ADS) && alt_name && *alt_name) {
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alternative_name = alt_name;
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}
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/* We can't call domain_list() as this function is called from
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init_domain_list() and we'll get stuck in a loop. */
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for (domain = _domain_list; domain; domain = domain->next) {
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if (strequal(domain_name, domain->name) ||
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strequal(domain_name, domain->alt_name))
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{
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break;
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}
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if (alternative_name && *alternative_name)
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{
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if (strequal(alternative_name, domain->name) ||
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strequal(alternative_name, domain->alt_name))
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{
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break;
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}
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}
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if (sid)
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{
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if (is_null_sid(sid)) {
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continue;
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}
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if (sid_equal(sid, &domain->sid)) {
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break;
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}
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}
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}
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if (domain != NULL) {
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/*
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* We found a match. Possibly update the SID
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*/
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if ((sid != NULL)
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&& sid_equal(&domain->sid, &global_sid_NULL)) {
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sid_copy( &domain->sid, sid );
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}
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return domain;
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}
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/* Create new domain entry */
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if ((domain = SMB_MALLOC_P(struct winbindd_domain)) == NULL)
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return NULL;
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/* Fill in fields */
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ZERO_STRUCTP(domain);
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fstrcpy(domain->name, domain_name);
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if (alternative_name) {
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fstrcpy(domain->alt_name, alternative_name);
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}
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domain->methods = methods;
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domain->backend = NULL;
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domain->internal = is_internal_domain(sid);
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domain->sequence_number = DOM_SEQUENCE_NONE;
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domain->last_seq_check = 0;
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domain->initialized = False;
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domain->online = is_internal_domain(sid);
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domain->check_online_timeout = 0;
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domain->dc_probe_pid = (pid_t)-1;
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if (sid) {
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sid_copy(&domain->sid, sid);
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}
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/* Link to domain list */
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DLIST_ADD_END(_domain_list, domain, struct winbindd_domain *);
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wcache_tdc_add_domain( domain );
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idmap_config_option = talloc_asprintf(talloc_tos(), "idmap config %s",
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domain->name);
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if (idmap_config_option == NULL) {
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DEBUG(0, ("talloc failed, not looking for idmap config\n"));
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goto done;
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}
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param = lp_parm_const_string(-1, idmap_config_option, "range", NULL);
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DEBUG(10, ("%s : range = %s\n", idmap_config_option,
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param ? param : "not defined"));
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if (param != NULL) {
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unsigned low_id, high_id;
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if (sscanf(param, "%u - %u", &low_id, &high_id) != 2) {
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DEBUG(1, ("invalid range syntax in %s: %s\n",
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idmap_config_option, param));
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goto done;
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}
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if (low_id > high_id) {
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DEBUG(1, ("invalid range in %s: %s\n",
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idmap_config_option, param));
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goto done;
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}
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domain->have_idmap_config = true;
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domain->id_range_low = low_id;
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domain->id_range_high = high_id;
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}
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done:
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DEBUG(2,("Added domain %s %s %s\n",
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domain->name, domain->alt_name,
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&domain->sid?sid_string_dbg(&domain->sid):""));
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return domain;
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}
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bool domain_is_forest_root(const struct winbindd_domain *domain)
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{
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const uint32_t fr_flags =
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(NETR_TRUST_FLAG_TREEROOT|NETR_TRUST_FLAG_IN_FOREST);
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return ((domain->domain_flags & fr_flags) == fr_flags);
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}
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/********************************************************************
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rescan our domains looking for new trusted domains
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********************************************************************/
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struct trustdom_state {
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struct winbindd_domain *domain;
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struct winbindd_request request;
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};
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static void trustdom_list_done(struct tevent_req *req);
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static void rescan_forest_root_trusts( void );
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static void rescan_forest_trusts( void );
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static void add_trusted_domains( struct winbindd_domain *domain )
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{
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struct trustdom_state *state;
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struct tevent_req *req;
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state = TALLOC_ZERO_P(NULL, struct trustdom_state);
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if (state == NULL) {
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DEBUG(0, ("talloc failed\n"));
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return;
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}
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state->domain = domain;
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state->request.length = sizeof(state->request);
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state->request.cmd = WINBINDD_LIST_TRUSTDOM;
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req = wb_domain_request_send(state, winbind_event_context(),
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domain, &state->request);
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if (req == NULL) {
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DEBUG(1, ("wb_domain_request_send failed\n"));
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TALLOC_FREE(state);
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return;
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}
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tevent_req_set_callback(req, trustdom_list_done, state);
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}
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static void trustdom_list_done(struct tevent_req *req)
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{
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struct trustdom_state *state = tevent_req_callback_data(
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req, struct trustdom_state);
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struct winbindd_response *response;
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int res, err;
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char *p;
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res = wb_domain_request_recv(req, state, &response, &err);
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if ((res == -1) || (response->result != WINBINDD_OK)) {
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DEBUG(1, ("Could not receive trustdoms\n"));
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TALLOC_FREE(state);
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return;
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}
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p = (char *)response->extra_data.data;
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while ((p != NULL) && (*p != '\0')) {
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char *q, *sidstr, *alt_name;
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struct dom_sid sid;
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struct winbindd_domain *domain;
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char *alternate_name = NULL;
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alt_name = strchr(p, '\\');
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if (alt_name == NULL) {
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DEBUG(0, ("Got invalid trustdom response\n"));
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break;
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}
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*alt_name = '\0';
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alt_name += 1;
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sidstr = strchr(alt_name, '\\');
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if (sidstr == NULL) {
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DEBUG(0, ("Got invalid trustdom response\n"));
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break;
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}
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*sidstr = '\0';
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sidstr += 1;
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q = strchr(sidstr, '\n');
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if (q != NULL)
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*q = '\0';
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if (!string_to_sid(&sid, sidstr)) {
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DEBUG(0, ("Got invalid trustdom response\n"));
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break;
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}
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/* use the real alt_name if we have one, else pass in NULL */
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if ( !strequal( alt_name, "(null)" ) )
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alternate_name = alt_name;
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/* If we have an existing domain structure, calling
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add_trusted_domain() will update the SID if
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necessary. This is important because we need the
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SID for sibling domains */
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if ( find_domain_from_name_noinit(p) != NULL ) {
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domain = add_trusted_domain(p, alternate_name,
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&cache_methods,
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&sid);
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} else {
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domain = add_trusted_domain(p, alternate_name,
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&cache_methods,
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&sid);
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if (domain) {
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setup_domain_child(domain);
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}
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}
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p=q;
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if (p != NULL)
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p += 1;
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}
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/*
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Cases to consider when scanning trusts:
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(a) we are calling from a child domain (primary && !forest_root)
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(b) we are calling from the root of the forest (primary && forest_root)
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(c) we are calling from a trusted forest domain (!primary
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&& !forest_root)
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*/
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if (state->domain->primary) {
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/* If this is our primary domain and we are not in the
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forest root, we have to scan the root trusts first */
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if (!domain_is_forest_root(state->domain))
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rescan_forest_root_trusts();
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else
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rescan_forest_trusts();
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} else if (domain_is_forest_root(state->domain)) {
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/* Once we have done root forest trust search, we can
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go on to search the trusted forests */
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rescan_forest_trusts();
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}
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TALLOC_FREE(state);
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return;
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}
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/********************************************************************
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Scan the trusts of our forest root
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********************************************************************/
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static void rescan_forest_root_trusts( void )
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{
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struct winbindd_tdc_domain *dom_list = NULL;
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size_t num_trusts = 0;
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int i;
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/* The only transitive trusts supported by Windows 2003 AD are
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(a) Parent-Child, (b) Tree-Root, and (c) Forest. The
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first two are handled in forest and listed by
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DsEnumerateDomainTrusts(). Forest trusts are not so we
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have to do that ourselves. */
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if ( !wcache_tdc_fetch_list( &dom_list, &num_trusts ) )
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return;
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for ( i=0; i<num_trusts; i++ ) {
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struct winbindd_domain *d = NULL;
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/* Find the forest root. Don't necessarily trust
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the domain_list() as our primary domain may not
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have been initialized. */
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if ( !(dom_list[i].trust_flags & NETR_TRUST_FLAG_TREEROOT) ) {
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continue;
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}
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/* Here's the forest root */
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d = find_domain_from_name_noinit( dom_list[i].domain_name );
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if ( !d ) {
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d = add_trusted_domain( dom_list[i].domain_name,
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dom_list[i].dns_name,
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&cache_methods,
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&dom_list[i].sid );
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if (d != NULL) {
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setup_domain_child(d);
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}
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}
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if (d == NULL) {
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continue;
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}
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DEBUG(10,("rescan_forest_root_trusts: Following trust path "
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"for domain tree root %s (%s)\n",
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d->name, d->alt_name ));
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d->domain_flags = dom_list[i].trust_flags;
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d->domain_type = dom_list[i].trust_type;
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d->domain_trust_attribs = dom_list[i].trust_attribs;
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add_trusted_domains( d );
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break;
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}
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TALLOC_FREE( dom_list );
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return;
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}
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/********************************************************************
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scan the transitive forest trusts (not our own)
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********************************************************************/
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static void rescan_forest_trusts( void )
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{
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struct winbindd_domain *d = NULL;
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struct winbindd_tdc_domain *dom_list = NULL;
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size_t num_trusts = 0;
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int i;
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/* The only transitive trusts supported by Windows 2003 AD are
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(a) Parent-Child, (b) Tree-Root, and (c) Forest. The
|
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first two are handled in forest and listed by
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|
DsEnumerateDomainTrusts(). Forest trusts are not so we
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|
have to do that ourselves. */
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if ( !wcache_tdc_fetch_list( &dom_list, &num_trusts ) )
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return;
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for ( i=0; i<num_trusts; i++ ) {
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uint32 flags = dom_list[i].trust_flags;
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uint32 type = dom_list[i].trust_type;
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uint32 attribs = dom_list[i].trust_attribs;
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d = find_domain_from_name_noinit( dom_list[i].domain_name );
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/* ignore our primary and internal domains */
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if ( d && (d->internal || d->primary ) )
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continue;
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|
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if ( (flags & NETR_TRUST_FLAG_INBOUND) &&
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(type == NETR_TRUST_TYPE_UPLEVEL) &&
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(attribs == NETR_TRUST_ATTRIBUTE_FOREST_TRANSITIVE) )
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{
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/* add the trusted domain if we don't know
|
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about it */
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|
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if ( !d ) {
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d = add_trusted_domain( dom_list[i].domain_name,
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dom_list[i].dns_name,
|
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&cache_methods,
|
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&dom_list[i].sid );
|
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if (d != NULL) {
|
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setup_domain_child(d);
|
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}
|
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}
|
|
|
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if (d == NULL) {
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continue;
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}
|
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|
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DEBUG(10,("Following trust path for domain %s (%s)\n",
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d->name, d->alt_name ));
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add_trusted_domains( d );
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}
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}
|
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|
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TALLOC_FREE( dom_list );
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|
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return;
|
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}
|
|
|
|
/*********************************************************************
|
|
The process of updating the trusted domain list is a three step
|
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async process:
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(a) ask our domain
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(b) ask the root domain in our forest
|
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(c) ask the a DC in any Win2003 trusted forests
|
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*********************************************************************/
|
|
|
|
void rescan_trusted_domains(struct tevent_context *ev, struct tevent_timer *te,
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struct timeval now, void *private_data)
|
|
{
|
|
TALLOC_FREE(te);
|
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|
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/* I use to clear the cache here and start over but that
|
|
caused problems in child processes that needed the
|
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trust dom list early on. Removing it means we
|
|
could have some trusted domains listed that have been
|
|
removed from our primary domain's DC until a full
|
|
restart. This should be ok since I think this is what
|
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Windows does as well. */
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|
|
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/* this will only add new domains we didn't already know about
|
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in the domain_list()*/
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|
|
|
add_trusted_domains( find_our_domain() );
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|
|
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te = tevent_add_timer(
|
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ev, NULL, timeval_current_ofs(WINBINDD_RESCAN_FREQ, 0),
|
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rescan_trusted_domains, NULL);
|
|
/*
|
|
* If te == NULL, there's not much we can do here. Don't fail, the
|
|
* only thing we miss is new trusted domains.
|
|
*/
|
|
|
|
return;
|
|
}
|
|
|
|
enum winbindd_result winbindd_dual_init_connection(struct winbindd_domain *domain,
|
|
struct winbindd_cli_state *state)
|
|
{
|
|
/* Ensure null termination */
|
|
state->request->domain_name
|
|
[sizeof(state->request->domain_name)-1]='\0';
|
|
state->request->data.init_conn.dcname
|
|
[sizeof(state->request->data.init_conn.dcname)-1]='\0';
|
|
|
|
if (strlen(state->request->data.init_conn.dcname) > 0) {
|
|
fstrcpy(domain->dcname, state->request->data.init_conn.dcname);
|
|
}
|
|
|
|
if (domain->internal) {
|
|
domain->initialized = true;
|
|
} else {
|
|
init_dc_connection(domain);
|
|
}
|
|
|
|
if (!domain->initialized) {
|
|
/* If we return error here we can't do any cached authentication,
|
|
but we may be in disconnected mode and can't initialize correctly.
|
|
Do what the previous code did and just return without initialization,
|
|
once we go online we'll re-initialize.
|
|
*/
|
|
DEBUG(5, ("winbindd_dual_init_connection: %s returning without initialization "
|
|
"online = %d\n", domain->name, (int)domain->online ));
|
|
}
|
|
|
|
fstrcpy(state->response->data.domain_info.name, domain->name);
|
|
fstrcpy(state->response->data.domain_info.alt_name, domain->alt_name);
|
|
sid_to_fstring(state->response->data.domain_info.sid, &domain->sid);
|
|
|
|
state->response->data.domain_info.native_mode
|
|
= domain->native_mode;
|
|
state->response->data.domain_info.active_directory
|
|
= domain->active_directory;
|
|
state->response->data.domain_info.primary
|
|
= domain->primary;
|
|
|
|
return WINBINDD_OK;
|
|
}
|
|
|
|
/* Look up global info for the winbind daemon */
|
|
bool init_domain_list(void)
|
|
{
|
|
struct winbindd_domain *domain;
|
|
int role = lp_server_role();
|
|
|
|
/* Free existing list */
|
|
free_domain_list();
|
|
|
|
/* BUILTIN domain */
|
|
|
|
domain = add_trusted_domain("BUILTIN", NULL, &cache_methods,
|
|
&global_sid_Builtin);
|
|
if (domain) {
|
|
setup_domain_child(domain);
|
|
}
|
|
|
|
/* Local SAM */
|
|
|
|
domain = add_trusted_domain(get_global_sam_name(), NULL,
|
|
&cache_methods, get_global_sam_sid());
|
|
if (domain) {
|
|
if ( role != ROLE_DOMAIN_MEMBER ) {
|
|
domain->primary = True;
|
|
}
|
|
setup_domain_child(domain);
|
|
}
|
|
|
|
/* Add ourselves as the first entry. */
|
|
|
|
if ( role == ROLE_DOMAIN_MEMBER ) {
|
|
struct dom_sid our_sid;
|
|
|
|
if (!secrets_fetch_domain_sid(lp_workgroup(), &our_sid)) {
|
|
DEBUG(0, ("Could not fetch our SID - did we join?\n"));
|
|
return False;
|
|
}
|
|
|
|
domain = add_trusted_domain( lp_workgroup(), lp_realm(),
|
|
&cache_methods, &our_sid);
|
|
if (domain) {
|
|
domain->primary = True;
|
|
setup_domain_child(domain);
|
|
|
|
/* Even in the parent winbindd we'll need to
|
|
talk to the DC, so try and see if we can
|
|
contact it. Theoretically this isn't neccessary
|
|
as the init_dc_connection() in init_child_recv()
|
|
will do this, but we can start detecting the DC
|
|
early here. */
|
|
set_domain_online_request(domain);
|
|
}
|
|
}
|
|
|
|
return True;
|
|
}
|
|
|
|
void check_domain_trusted( const char *name, const struct dom_sid *user_sid )
|
|
{
|
|
struct winbindd_domain *domain;
|
|
struct dom_sid dom_sid;
|
|
uint32 rid;
|
|
|
|
/* Check if we even care */
|
|
|
|
if (!lp_allow_trusted_domains())
|
|
return;
|
|
|
|
domain = find_domain_from_name_noinit( name );
|
|
if ( domain )
|
|
return;
|
|
|
|
sid_copy( &dom_sid, user_sid );
|
|
if ( !sid_split_rid( &dom_sid, &rid ) )
|
|
return;
|
|
|
|
/* add the newly discovered trusted domain */
|
|
|
|
domain = add_trusted_domain( name, NULL, &cache_methods,
|
|
&dom_sid);
|
|
|
|
if ( !domain )
|
|
return;
|
|
|
|
/* assume this is a trust from a one-way transitive
|
|
forest trust */
|
|
|
|
domain->active_directory = True;
|
|
domain->domain_flags = NETR_TRUST_FLAG_OUTBOUND;
|
|
domain->domain_type = NETR_TRUST_TYPE_UPLEVEL;
|
|
domain->internal = False;
|
|
domain->online = True;
|
|
|
|
setup_domain_child(domain);
|
|
|
|
wcache_tdc_add_domain( domain );
|
|
|
|
return;
|
|
}
|
|
|
|
/**
|
|
* Given a domain name, return the struct winbindd domain info for it
|
|
*
|
|
* @note Do *not* pass lp_workgroup() to this function. domain_list
|
|
* may modify it's value, and free that pointer. Instead, our local
|
|
* domain may be found by calling find_our_domain().
|
|
* directly.
|
|
*
|
|
*
|
|
* @return The domain structure for the named domain, if it is working.
|
|
*/
|
|
|
|
struct winbindd_domain *find_domain_from_name_noinit(const char *domain_name)
|
|
{
|
|
struct winbindd_domain *domain;
|
|
|
|
/* Search through list */
|
|
|
|
for (domain = domain_list(); domain != NULL; domain = domain->next) {
|
|
if (strequal(domain_name, domain->name) ||
|
|
(domain->alt_name[0] &&
|
|
strequal(domain_name, domain->alt_name))) {
|
|
return domain;
|
|
}
|
|
}
|
|
|
|
/* Not found */
|
|
|
|
return NULL;
|
|
}
|
|
|
|
struct winbindd_domain *find_domain_from_name(const char *domain_name)
|
|
{
|
|
struct winbindd_domain *domain;
|
|
|
|
domain = find_domain_from_name_noinit(domain_name);
|
|
|
|
if (domain == NULL)
|
|
return NULL;
|
|
|
|
if (!domain->initialized)
|
|
init_dc_connection(domain);
|
|
|
|
return domain;
|
|
}
|
|
|
|
/* Given a domain sid, return the struct winbindd domain info for it */
|
|
|
|
struct winbindd_domain *find_domain_from_sid_noinit(const struct dom_sid *sid)
|
|
{
|
|
struct winbindd_domain *domain;
|
|
|
|
/* Search through list */
|
|
|
|
for (domain = domain_list(); domain != NULL; domain = domain->next) {
|
|
if (sid_compare_domain(sid, &domain->sid) == 0)
|
|
return domain;
|
|
}
|
|
|
|
/* Not found */
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Given a domain sid, return the struct winbindd domain info for it */
|
|
|
|
struct winbindd_domain *find_domain_from_sid(const struct dom_sid *sid)
|
|
{
|
|
struct winbindd_domain *domain;
|
|
|
|
domain = find_domain_from_sid_noinit(sid);
|
|
|
|
if (domain == NULL)
|
|
return NULL;
|
|
|
|
if (!domain->initialized)
|
|
init_dc_connection(domain);
|
|
|
|
return domain;
|
|
}
|
|
|
|
struct winbindd_domain *find_our_domain(void)
|
|
{
|
|
struct winbindd_domain *domain;
|
|
|
|
/* Search through list */
|
|
|
|
for (domain = domain_list(); domain != NULL; domain = domain->next) {
|
|
if (domain->primary)
|
|
return domain;
|
|
}
|
|
|
|
smb_panic("Could not find our domain");
|
|
return NULL;
|
|
}
|
|
|
|
struct winbindd_domain *find_root_domain(void)
|
|
{
|
|
struct winbindd_domain *ours = find_our_domain();
|
|
|
|
if (ours->forest_name[0] == '\0') {
|
|
return NULL;
|
|
}
|
|
|
|
return find_domain_from_name( ours->forest_name );
|
|
}
|
|
|
|
struct winbindd_domain *find_builtin_domain(void)
|
|
{
|
|
struct winbindd_domain *domain;
|
|
|
|
domain = find_domain_from_sid(&global_sid_Builtin);
|
|
if (domain == NULL) {
|
|
smb_panic("Could not find BUILTIN domain");
|
|
}
|
|
|
|
return domain;
|
|
}
|
|
|
|
/* Find the appropriate domain to lookup a name or SID */
|
|
|
|
struct winbindd_domain *find_lookup_domain_from_sid(const struct dom_sid *sid)
|
|
{
|
|
/* SIDs in the S-1-22-{1,2} domain should be handled by our passdb */
|
|
|
|
if ( sid_check_is_in_unix_groups(sid) ||
|
|
sid_check_is_unix_groups(sid) ||
|
|
sid_check_is_in_unix_users(sid) ||
|
|
sid_check_is_unix_users(sid) )
|
|
{
|
|
return find_domain_from_sid(get_global_sam_sid());
|
|
}
|
|
|
|
/* A DC can't ask the local smbd for remote SIDs, here winbindd is the
|
|
* one to contact the external DC's. On member servers the internal
|
|
* domains are different: These are part of the local SAM. */
|
|
|
|
DEBUG(10, ("find_lookup_domain_from_sid(%s)\n", sid_string_dbg(sid)));
|
|
|
|
if (IS_DC || is_internal_domain(sid) || is_in_internal_domain(sid)) {
|
|
DEBUG(10, ("calling find_domain_from_sid\n"));
|
|
return find_domain_from_sid(sid);
|
|
}
|
|
|
|
/* On a member server a query for SID or name can always go to our
|
|
* primary DC. */
|
|
|
|
DEBUG(10, ("calling find_our_domain\n"));
|
|
return find_our_domain();
|
|
}
|
|
|
|
struct winbindd_domain *find_lookup_domain_from_name(const char *domain_name)
|
|
{
|
|
if ( strequal(domain_name, unix_users_domain_name() ) ||
|
|
strequal(domain_name, unix_groups_domain_name() ) )
|
|
{
|
|
/*
|
|
* The "Unix User" and "Unix Group" domain our handled by
|
|
* passdb
|
|
*/
|
|
return find_domain_from_name_noinit( get_global_sam_name() );
|
|
}
|
|
|
|
if (IS_DC || strequal(domain_name, "BUILTIN") ||
|
|
strequal(domain_name, get_global_sam_name()))
|
|
return find_domain_from_name_noinit(domain_name);
|
|
|
|
|
|
return find_our_domain();
|
|
}
|
|
|
|
/* Is this a domain which we may assume no DOMAIN\ prefix? */
|
|
|
|
static bool assume_domain(const char *domain)
|
|
{
|
|
/* never assume the domain on a standalone server */
|
|
|
|
if ( lp_server_role() == ROLE_STANDALONE )
|
|
return False;
|
|
|
|
/* domain member servers may possibly assume for the domain name */
|
|
|
|
if ( lp_server_role() == ROLE_DOMAIN_MEMBER ) {
|
|
if ( !strequal(lp_workgroup(), domain) )
|
|
return False;
|
|
|
|
if ( lp_winbind_use_default_domain() || lp_winbind_trusted_domains_only() )
|
|
return True;
|
|
}
|
|
|
|
/* only left with a domain controller */
|
|
|
|
if ( strequal(get_global_sam_name(), domain) ) {
|
|
return True;
|
|
}
|
|
|
|
return False;
|
|
}
|
|
|
|
/* Parse a string of the form DOMAIN\user into a domain and a user */
|
|
|
|
bool parse_domain_user(const char *domuser, fstring domain, fstring user)
|
|
{
|
|
char *p = strchr(domuser,*lp_winbind_separator());
|
|
|
|
if ( !p ) {
|
|
fstrcpy(user, domuser);
|
|
|
|
if ( assume_domain(lp_workgroup())) {
|
|
fstrcpy(domain, lp_workgroup());
|
|
} else if ((p = strchr(domuser, '@')) != NULL) {
|
|
fstrcpy(domain, p + 1);
|
|
user[PTR_DIFF(p, domuser)] = 0;
|
|
} else {
|
|
return False;
|
|
}
|
|
} else {
|
|
fstrcpy(user, p+1);
|
|
fstrcpy(domain, domuser);
|
|
domain[PTR_DIFF(p, domuser)] = 0;
|
|
}
|
|
|
|
strupper_m(domain);
|
|
|
|
return True;
|
|
}
|
|
|
|
bool parse_domain_user_talloc(TALLOC_CTX *mem_ctx, const char *domuser,
|
|
char **domain, char **user)
|
|
{
|
|
fstring fstr_domain, fstr_user;
|
|
if (!parse_domain_user(domuser, fstr_domain, fstr_user)) {
|
|
return False;
|
|
}
|
|
*domain = talloc_strdup(mem_ctx, fstr_domain);
|
|
*user = talloc_strdup(mem_ctx, fstr_user);
|
|
return ((*domain != NULL) && (*user != NULL));
|
|
}
|
|
|
|
/* add a domain user name to a buffer */
|
|
void parse_add_domuser(void *buf, char *domuser, int *len)
|
|
{
|
|
fstring domain;
|
|
char *p, *user;
|
|
|
|
user = domuser;
|
|
p = strchr(domuser, *lp_winbind_separator());
|
|
|
|
if (p) {
|
|
|
|
fstrcpy(domain, domuser);
|
|
domain[PTR_DIFF(p, domuser)] = 0;
|
|
p++;
|
|
|
|
if (assume_domain(domain)) {
|
|
|
|
user = p;
|
|
*len -= (PTR_DIFF(p, domuser));
|
|
}
|
|
}
|
|
|
|
safe_strcpy((char *)buf, user, *len);
|
|
}
|
|
|
|
/* Ensure an incoming username from NSS is fully qualified. Replace the
|
|
incoming fstring with DOMAIN <separator> user. Returns the same
|
|
values as parse_domain_user() but also replaces the incoming username.
|
|
Used to ensure all names are fully qualified within winbindd.
|
|
Used by the NSS protocols of auth, chauthtok, logoff and ccache_ntlm_auth.
|
|
The protocol definitions of auth_crap, chng_pswd_auth_crap
|
|
really should be changed to use this instead of doing things
|
|
by hand. JRA. */
|
|
|
|
bool canonicalize_username(fstring username_inout, fstring domain, fstring user)
|
|
{
|
|
if (!parse_domain_user(username_inout, domain, user)) {
|
|
return False;
|
|
}
|
|
slprintf(username_inout, sizeof(fstring) - 1, "%s%c%s",
|
|
domain, *lp_winbind_separator(),
|
|
user);
|
|
return True;
|
|
}
|
|
|
|
/*
|
|
Fill DOMAIN\\USERNAME entry accounting 'winbind use default domain' and
|
|
'winbind separator' options.
|
|
This means:
|
|
- omit DOMAIN when 'winbind use default domain = true' and DOMAIN is
|
|
lp_workgroup()
|
|
|
|
If we are a PDC or BDC, and this is for our domain, do likewise.
|
|
|
|
Also, if omit DOMAIN if 'winbind trusted domains only = true', as the
|
|
username is then unqualified in unix
|
|
|
|
We always canonicalize as UPPERCASE DOMAIN, lowercase username.
|
|
*/
|
|
void fill_domain_username(fstring name, const char *domain, const char *user, bool can_assume)
|
|
{
|
|
fstring tmp_user;
|
|
|
|
fstrcpy(tmp_user, user);
|
|
strlower_m(tmp_user);
|
|
|
|
if (can_assume && assume_domain(domain)) {
|
|
strlcpy(name, tmp_user, sizeof(fstring));
|
|
} else {
|
|
slprintf(name, sizeof(fstring) - 1, "%s%c%s",
|
|
domain, *lp_winbind_separator(),
|
|
tmp_user);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* talloc version of fill_domain_username()
|
|
* return NULL on talloc failure.
|
|
*/
|
|
char *fill_domain_username_talloc(TALLOC_CTX *mem_ctx,
|
|
const char *domain,
|
|
const char *user,
|
|
bool can_assume)
|
|
{
|
|
char *tmp_user, *name;
|
|
|
|
tmp_user = talloc_strdup(mem_ctx, user);
|
|
strlower_m(tmp_user);
|
|
|
|
if (can_assume && assume_domain(domain)) {
|
|
name = tmp_user;
|
|
} else {
|
|
name = talloc_asprintf(mem_ctx, "%s%c%s",
|
|
domain,
|
|
*lp_winbind_separator(),
|
|
tmp_user);
|
|
TALLOC_FREE(tmp_user);
|
|
}
|
|
|
|
return name;
|
|
}
|
|
|
|
/*
|
|
* Client list accessor functions
|
|
*/
|
|
|
|
static struct winbindd_cli_state *_client_list;
|
|
static int _num_clients;
|
|
|
|
/* Return list of all connected clients */
|
|
|
|
struct winbindd_cli_state *winbindd_client_list(void)
|
|
{
|
|
return _client_list;
|
|
}
|
|
|
|
/* Add a connection to the list */
|
|
|
|
void winbindd_add_client(struct winbindd_cli_state *cli)
|
|
{
|
|
DLIST_ADD(_client_list, cli);
|
|
_num_clients++;
|
|
}
|
|
|
|
/* Remove a client from the list */
|
|
|
|
void winbindd_remove_client(struct winbindd_cli_state *cli)
|
|
{
|
|
DLIST_REMOVE(_client_list, cli);
|
|
_num_clients--;
|
|
}
|
|
|
|
/* Return number of open clients */
|
|
|
|
int winbindd_num_clients(void)
|
|
{
|
|
return _num_clients;
|
|
}
|
|
|
|
NTSTATUS lookup_usergroups_cached(struct winbindd_domain *domain,
|
|
TALLOC_CTX *mem_ctx,
|
|
const struct dom_sid *user_sid,
|
|
uint32 *p_num_groups, struct dom_sid **user_sids)
|
|
{
|
|
struct netr_SamInfo3 *info3 = NULL;
|
|
NTSTATUS status = NT_STATUS_NO_MEMORY;
|
|
size_t num_groups = 0;
|
|
|
|
DEBUG(3,(": lookup_usergroups_cached\n"));
|
|
|
|
*user_sids = NULL;
|
|
*p_num_groups = 0;
|
|
|
|
info3 = netsamlogon_cache_get(mem_ctx, user_sid);
|
|
|
|
if (info3 == NULL) {
|
|
return NT_STATUS_OBJECT_NAME_NOT_FOUND;
|
|
}
|
|
|
|
if (info3->base.groups.count == 0) {
|
|
TALLOC_FREE(info3);
|
|
return NT_STATUS_UNSUCCESSFUL;
|
|
}
|
|
|
|
/* Skip Domain local groups outside our domain.
|
|
We'll get these from the getsidaliases() RPC call. */
|
|
status = sid_array_from_info3(mem_ctx, info3,
|
|
user_sids,
|
|
&num_groups,
|
|
false, true);
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
TALLOC_FREE(info3);
|
|
return status;
|
|
}
|
|
|
|
TALLOC_FREE(info3);
|
|
*p_num_groups = num_groups;
|
|
status = (user_sids != NULL) ? NT_STATUS_OK : NT_STATUS_NO_MEMORY;
|
|
|
|
DEBUG(3,(": lookup_usergroups_cached succeeded\n"));
|
|
|
|
return status;
|
|
}
|
|
|
|
/*********************************************************************
|
|
We use this to remove spaces from user and group names
|
|
********************************************************************/
|
|
|
|
NTSTATUS normalize_name_map(TALLOC_CTX *mem_ctx,
|
|
struct winbindd_domain *domain,
|
|
const char *name,
|
|
char **normalized)
|
|
{
|
|
NTSTATUS nt_status;
|
|
|
|
if (!name || !normalized) {
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
if (!lp_winbind_normalize_names()) {
|
|
return NT_STATUS_PROCEDURE_NOT_FOUND;
|
|
}
|
|
|
|
/* Alias support and whitespace replacement are mutually
|
|
exclusive */
|
|
|
|
nt_status = resolve_username_to_alias(mem_ctx, domain,
|
|
name, normalized );
|
|
if (NT_STATUS_IS_OK(nt_status)) {
|
|
/* special return code to let the caller know we
|
|
mapped to an alias */
|
|
return NT_STATUS_FILE_RENAMED;
|
|
}
|
|
|
|
/* check for an unreachable domain */
|
|
|
|
if (NT_STATUS_EQUAL(nt_status, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND)) {
|
|
DEBUG(5,("normalize_name_map: Setting domain %s offline\n",
|
|
domain->name));
|
|
set_domain_offline(domain);
|
|
return nt_status;
|
|
}
|
|
|
|
/* deal with whitespace */
|
|
|
|
*normalized = talloc_strdup(mem_ctx, name);
|
|
if (!(*normalized)) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
all_string_sub( *normalized, " ", "_", 0 );
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/*********************************************************************
|
|
We use this to do the inverse of normalize_name_map()
|
|
********************************************************************/
|
|
|
|
NTSTATUS normalize_name_unmap(TALLOC_CTX *mem_ctx,
|
|
char *name,
|
|
char **normalized)
|
|
{
|
|
NTSTATUS nt_status;
|
|
struct winbindd_domain *domain = find_our_domain();
|
|
|
|
if (!name || !normalized) {
|
|
return NT_STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
if (!lp_winbind_normalize_names()) {
|
|
return NT_STATUS_PROCEDURE_NOT_FOUND;
|
|
}
|
|
|
|
/* Alias support and whitespace replacement are mutally
|
|
exclusive */
|
|
|
|
/* When mapping from an alias to a username, we don't know the
|
|
domain. But we only need a domain structure to cache
|
|
a successful lookup , so just our own domain structure for
|
|
the seqnum. */
|
|
|
|
nt_status = resolve_alias_to_username(mem_ctx, domain,
|
|
name, normalized);
|
|
if (NT_STATUS_IS_OK(nt_status)) {
|
|
/* Special return code to let the caller know we mapped
|
|
from an alias */
|
|
return NT_STATUS_FILE_RENAMED;
|
|
}
|
|
|
|
/* check for an unreachable domain */
|
|
|
|
if (NT_STATUS_EQUAL(nt_status, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND)) {
|
|
DEBUG(5,("normalize_name_unmap: Setting domain %s offline\n",
|
|
domain->name));
|
|
set_domain_offline(domain);
|
|
return nt_status;
|
|
}
|
|
|
|
/* deal with whitespace */
|
|
|
|
*normalized = talloc_strdup(mem_ctx, name);
|
|
if (!(*normalized)) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
all_string_sub(*normalized, "_", " ", 0);
|
|
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/*********************************************************************
|
|
********************************************************************/
|
|
|
|
bool winbindd_can_contact_domain(struct winbindd_domain *domain)
|
|
{
|
|
struct winbindd_tdc_domain *tdc = NULL;
|
|
TALLOC_CTX *frame = talloc_stackframe();
|
|
bool ret = false;
|
|
|
|
/* We can contact the domain if it is our primary domain */
|
|
|
|
if (domain->primary) {
|
|
return true;
|
|
}
|
|
|
|
/* Trust the TDC cache and not the winbindd_domain flags */
|
|
|
|
if ((tdc = wcache_tdc_fetch_domain(frame, domain->name)) == NULL) {
|
|
DEBUG(10,("winbindd_can_contact_domain: %s not found in cache\n",
|
|
domain->name));
|
|
return false;
|
|
}
|
|
|
|
/* Can always contact a domain that is in out forest */
|
|
|
|
if (tdc->trust_flags & NETR_TRUST_FLAG_IN_FOREST) {
|
|
ret = true;
|
|
goto done;
|
|
}
|
|
|
|
/*
|
|
* On a _member_ server, we cannot contact the domain if it
|
|
* is running AD and we have no inbound trust.
|
|
*/
|
|
|
|
if (!IS_DC &&
|
|
domain->active_directory &&
|
|
((tdc->trust_flags & NETR_TRUST_FLAG_INBOUND) != NETR_TRUST_FLAG_INBOUND))
|
|
{
|
|
DEBUG(10, ("winbindd_can_contact_domain: %s is an AD domain "
|
|
"and we have no inbound trust.\n", domain->name));
|
|
goto done;
|
|
}
|
|
|
|
/* Assume everything else is ok (probably not true but what
|
|
can you do?) */
|
|
|
|
ret = true;
|
|
|
|
done:
|
|
talloc_destroy(frame);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*********************************************************************
|
|
********************************************************************/
|
|
|
|
bool winbindd_internal_child(struct winbindd_child *child)
|
|
{
|
|
if ((child == idmap_child()) || (child == locator_child())) {
|
|
return True;
|
|
}
|
|
|
|
return False;
|
|
}
|
|
|
|
#ifdef HAVE_KRB5_LOCATE_PLUGIN_H
|
|
|
|
/*********************************************************************
|
|
********************************************************************/
|
|
|
|
static void winbindd_set_locator_kdc_env(const struct winbindd_domain *domain)
|
|
{
|
|
char *var = NULL;
|
|
char addr[INET6_ADDRSTRLEN];
|
|
const char *kdc = NULL;
|
|
int lvl = 11;
|
|
|
|
if (!domain || !domain->alt_name || !*domain->alt_name) {
|
|
return;
|
|
}
|
|
|
|
if (domain->initialized && !domain->active_directory) {
|
|
DEBUG(lvl,("winbindd_set_locator_kdc_env: %s not AD\n",
|
|
domain->alt_name));
|
|
return;
|
|
}
|
|
|
|
print_sockaddr(addr, sizeof(addr), &domain->dcaddr);
|
|
kdc = addr;
|
|
if (!*kdc) {
|
|
DEBUG(lvl,("winbindd_set_locator_kdc_env: %s no DC IP\n",
|
|
domain->alt_name));
|
|
kdc = domain->dcname;
|
|
}
|
|
|
|
if (!kdc || !*kdc) {
|
|
DEBUG(lvl,("winbindd_set_locator_kdc_env: %s no DC at all\n",
|
|
domain->alt_name));
|
|
return;
|
|
}
|
|
|
|
if (asprintf_strupper_m(&var, "%s_%s", WINBINDD_LOCATOR_KDC_ADDRESS,
|
|
domain->alt_name) == -1) {
|
|
return;
|
|
}
|
|
|
|
DEBUG(lvl,("winbindd_set_locator_kdc_env: setting var: %s to: %s\n",
|
|
var, kdc));
|
|
|
|
setenv(var, kdc, 1);
|
|
free(var);
|
|
}
|
|
|
|
/*********************************************************************
|
|
********************************************************************/
|
|
|
|
void winbindd_set_locator_kdc_envs(const struct winbindd_domain *domain)
|
|
{
|
|
struct winbindd_domain *our_dom = find_our_domain();
|
|
|
|
winbindd_set_locator_kdc_env(domain);
|
|
|
|
if (domain != our_dom) {
|
|
winbindd_set_locator_kdc_env(our_dom);
|
|
}
|
|
}
|
|
|
|
/*********************************************************************
|
|
********************************************************************/
|
|
|
|
void winbindd_unset_locator_kdc_env(const struct winbindd_domain *domain)
|
|
{
|
|
char *var = NULL;
|
|
|
|
if (!domain || !domain->alt_name || !*domain->alt_name) {
|
|
return;
|
|
}
|
|
|
|
if (asprintf_strupper_m(&var, "%s_%s", WINBINDD_LOCATOR_KDC_ADDRESS,
|
|
domain->alt_name) == -1) {
|
|
return;
|
|
}
|
|
|
|
unsetenv(var);
|
|
free(var);
|
|
}
|
|
#else
|
|
|
|
void winbindd_set_locator_kdc_envs(const struct winbindd_domain *domain)
|
|
{
|
|
return;
|
|
}
|
|
|
|
void winbindd_unset_locator_kdc_env(const struct winbindd_domain *domain)
|
|
{
|
|
return;
|
|
}
|
|
|
|
#endif /* HAVE_KRB5_LOCATE_PLUGIN_H */
|
|
|
|
void set_auth_errors(struct winbindd_response *resp, NTSTATUS result)
|
|
{
|
|
resp->data.auth.nt_status = NT_STATUS_V(result);
|
|
fstrcpy(resp->data.auth.nt_status_string, nt_errstr(result));
|
|
|
|
/* we might have given a more useful error above */
|
|
if (*resp->data.auth.error_string == '\0')
|
|
fstrcpy(resp->data.auth.error_string,
|
|
get_friendly_nt_error_msg(result));
|
|
resp->data.auth.pam_error = nt_status_to_pam(result);
|
|
}
|
|
|
|
bool is_domain_offline(const struct winbindd_domain *domain)
|
|
{
|
|
if (!lp_winbind_offline_logon()) {
|
|
return false;
|
|
}
|
|
if (get_global_winbindd_state_offline()) {
|
|
return true;
|
|
}
|
|
return !domain->online;
|
|
}
|