2 Unix SMB/CIFS implementation.
4 Winbind daemon for ntdom nss module
6 Copyright (C) Tim Potter 2000-2001
7 Copyright (C) 2001 by Martin Pool <mbp@samba.org>
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 #define DBGC_CLASS DBGC_WINBIND
30 * @file winbindd_util.c
32 * Winbind daemon for NT domain authentication nss module.
37 * Used to clobber name fields that have an undefined value.
39 * Correct code should never look at a field that has this value.
42 static const fstring name_deadbeef = "<deadbeef>";
44 /* The list of trusted domains. Note that the list can be deleted and
45 recreated using the init_domain_list() function so pointers to
46 individual winbindd_domain structures cannot be made. Keep a copy of
47 the domain name instead. */
49 static struct winbindd_domain *_domain_list;
51 struct winbindd_domain *domain_list(void)
61 /* Free all entries in the trusted domain list */
63 void free_domain_list(void)
65 struct winbindd_domain *domain = _domain_list;
68 struct winbindd_domain *next = domain->next;
70 DLIST_REMOVE(_domain_list, domain);
77 /* Add a trusted domain to our list of domains */
78 static struct winbindd_domain *add_trusted_domain(const char *domain_name, const char *alt_name,
79 struct winbindd_methods *methods,
82 struct winbindd_domain *domain;
84 /* We can't call domain_list() as this function is called from
85 init_domain_list() and we'll get stuck in a loop. */
86 for (domain = _domain_list; domain; domain = domain->next) {
87 if (strcasecmp(domain_name, domain->name) == 0 ||
88 strcasecmp(domain_name, domain->alt_name) == 0) {
91 if (alt_name && *alt_name) {
92 if (strcasecmp(alt_name, domain->name) == 0 ||
93 strcasecmp(alt_name, domain->alt_name) == 0) {
99 /* Create new domain entry */
101 if ((domain = (struct winbindd_domain *)
102 malloc(sizeof(*domain))) == NULL)
107 ZERO_STRUCTP(domain);
109 /* prioritise the short name */
110 if (strchr_m(domain_name, '.') && alt_name && *alt_name) {
111 fstrcpy(domain->name, alt_name);
112 fstrcpy(domain->alt_name, domain_name);
114 fstrcpy(domain->name, domain_name);
116 fstrcpy(domain->alt_name, alt_name);
120 domain->methods = methods;
121 domain->sequence_number = DOM_SEQUENCE_NONE;
122 domain->last_seq_check = 0;
124 sid_copy(&domain->sid, sid);
127 /* see if this is a native mode win2k domain, but only for our own domain */
129 if ( strequal( lp_workgroup(), domain_name) ) {
130 domain->native_mode = cm_check_for_native_mode_win2k( domain_name );
131 DEBUG(3,("add_trusted_domain: %s is a %s mode domain\n", domain_name,
132 domain->native_mode ? "native" : "mixed" ));
135 /* Link to domain list */
136 DLIST_ADD(_domain_list, domain);
138 DEBUG(1,("Added domain %s %s %s\n",
139 domain->name, domain->alt_name,
140 sid?sid_string_static(&domain->sid):""));
147 rescan our domains looking for new trusted domains
149 void rescan_trusted_domains(void)
151 struct winbindd_domain *domain;
153 static time_t last_scan;
154 time_t t = time(NULL);
156 /* trusted domains might be disabled */
157 if (!lp_allow_trusted_domains()) {
161 /* ony rescan every few minutes */
162 if ((unsigned)(t - last_scan) < WINBINDD_RESCAN_FREQ) {
167 DEBUG(1, ("scanning trusted domain list\n"));
169 if (!(mem_ctx = talloc_init("init_domain_list")))
172 for (domain = _domain_list; domain; domain = domain->next) {
180 result = domain->methods->trusted_domains(domain, mem_ctx, &num_domains,
181 &names, &alt_names, &dom_sids);
182 if (!NT_STATUS_IS_OK(result)) {
186 /* Add each domain to the trusted domain list. Each domain inherits
187 the access methods of its parent */
188 for(i = 0; i < num_domains; i++) {
189 DEBUG(10,("Found domain %s\n", names[i]));
190 add_trusted_domain(names[i], alt_names?alt_names[i]:NULL,
191 domain->methods, &dom_sids[i]);
193 /* store trusted domain in the cache */
194 trustdom_cache_store(names[i], alt_names ? alt_names[i] : NULL,
195 &dom_sids[i], t + WINBINDD_RESCAN_FREQ);
199 talloc_destroy(mem_ctx);
202 /* Look up global info for the winbind daemon */
203 BOOL init_domain_list(void)
206 extern struct winbindd_methods cache_methods;
207 struct winbindd_domain *domain;
209 /* Free existing list */
212 /* Add ourselves as the first entry */
213 domain = add_trusted_domain(lp_workgroup(), NULL, &cache_methods, NULL);
216 * Now we *must* get the domain sid for our primary domain. Go into
217 * a holding pattern until that is available
220 result = cache_methods.domain_sid(domain, &domain->sid);
221 while (!NT_STATUS_IS_OK(result)) {
224 DEBUG(1,("Retrying startup domain sid fetch for %s\n",
226 result = cache_methods.domain_sid(domain, &domain->sid);
228 /* If we don't call lp_talloc_free() here we end up
229 accumulating memory in the "global" lp_talloc in
235 /* get any alternate name for the primary domain */
236 cache_methods.alternate_name(domain);
238 /* do an initial scan for trusted domains */
239 rescan_trusted_domains();
244 /* Given a domain name, return the struct winbindd domain info for it
245 if it is actually working. */
247 struct winbindd_domain *find_domain_from_name(const char *domain_name)
249 struct winbindd_domain *domain;
251 /* Search through list */
253 for (domain = domain_list(); domain != NULL; domain = domain->next) {
254 if (strequal(domain_name, domain->name) ||
255 (domain->alt_name[0] && strequal(domain_name, domain->alt_name)))
264 /* Given a domain sid, return the struct winbindd domain info for it */
266 struct winbindd_domain *find_domain_from_sid(DOM_SID *sid)
268 struct winbindd_domain *domain;
270 /* Search through list */
272 for (domain = domain_list(); domain != NULL; domain = domain->next) {
273 if (sid_compare_domain(sid, &domain->sid) == 0)
282 /* Lookup a sid in a domain from a name */
284 BOOL winbindd_lookup_sid_by_name(struct winbindd_domain *domain,
285 const char *name, DOM_SID *sid,
286 enum SID_NAME_USE *type)
290 /* Don't bother with machine accounts */
292 if (name[strlen(name) - 1] == '$')
296 result = domain->methods->name_to_sid(domain, name, sid, type);
298 /* Return rid and type if lookup successful */
299 if (!NT_STATUS_IS_OK(result)) {
300 *type = SID_NAME_UNKNOWN;
303 return NT_STATUS_IS_OK(result);
307 * @brief Lookup a name in a domain from a sid.
309 * @param sid Security ID you want to look up.
311 * @param name On success, set to the name corresponding to @p sid.
313 * @param dom_name On success, set to the 'domain name' corresponding to @p sid.
315 * @param type On success, contains the type of name: alias, group or
318 * @retval True if the name exists, in which case @p name and @p type
319 * are set, otherwise False.
321 BOOL winbindd_lookup_name_by_sid(DOM_SID *sid,
324 enum SID_NAME_USE *type)
330 struct winbindd_domain *domain;
332 domain = find_domain_from_sid(sid);
335 DEBUG(1,("Can't find domain from sid\n"));
341 if (!(mem_ctx = talloc_init("winbindd_lookup_name_by_sid")))
344 result = domain->methods->sid_to_name(domain, mem_ctx, sid, &names, type);
346 /* Return name and type if successful */
348 if ((rv = NT_STATUS_IS_OK(result))) {
349 fstrcpy(dom_name, domain->name);
350 fstrcpy(name, names);
352 *type = SID_NAME_UNKNOWN;
353 fstrcpy(name, name_deadbeef);
356 talloc_destroy(mem_ctx);
362 /* Free state information held for {set,get,end}{pw,gr}ent() functions */
364 void free_getent_state(struct getent_state *state)
366 struct getent_state *temp;
368 /* Iterate over state list */
372 while(temp != NULL) {
373 struct getent_state *next;
375 /* Free sam entries then list entry */
377 SAFE_FREE(state->sam_entries);
378 DLIST_REMOVE(state, state);
386 /* Parse winbindd related parameters */
388 BOOL winbindd_param_init(void)
390 /* Parse winbind uid and winbind_gid parameters */
392 if (!lp_winbind_uid(&server_state.uid_low, &server_state.uid_high)) {
393 DEBUG(0, ("winbind uid range missing or invalid\n"));
397 if (!lp_winbind_gid(&server_state.gid_low, &server_state.gid_high)) {
398 DEBUG(0, ("winbind gid range missing or invalid\n"));
405 /* Check if a domain is present in a comma-separated list of domains */
407 BOOL check_domain_env(char *domain_env, char *domain)
410 const char *tmp = domain_env;
412 while(next_token(&tmp, name, ",", sizeof(fstring))) {
413 if (strequal(name, domain))
420 /* Parse a string of the form DOMAIN/user into a domain and a user */
422 BOOL parse_domain_user(const char *domuser, fstring domain, fstring user)
424 char *p = strchr(domuser,*lp_winbind_separator());
426 if (!(p || lp_winbind_use_default_domain()))
429 if(!p && lp_winbind_use_default_domain()) {
430 fstrcpy(user, domuser);
431 fstrcpy(domain, lp_workgroup());
434 fstrcpy(domain, domuser);
435 domain[PTR_DIFF(p, domuser)] = 0;
442 Fill DOMAIN\\USERNAME entry accounting 'winbind use default domain' and
443 'winbind separator' options.
445 - omit DOMAIN when 'winbind use default domain = true' and DOMAIN is
449 void fill_domain_username(fstring name, const char *domain, const char *user)
451 if(lp_winbind_use_default_domain() &&
452 !strcmp(lp_workgroup(), domain)) {
453 strlcpy(name, user, sizeof(fstring));
455 slprintf(name, sizeof(fstring) - 1, "%s%s%s",
456 domain, lp_winbind_separator(),
462 * Winbindd socket accessor functions
465 /* Open the winbindd socket */
467 static int _winbindd_socket = -1;
469 int open_winbindd_socket(void)
471 if (_winbindd_socket == -1) {
472 _winbindd_socket = create_pipe_sock(
473 WINBINDD_SOCKET_DIR, WINBINDD_SOCKET_NAME, 0755);
474 DEBUG(10, ("open_winbindd_socket: opened socket fd %d\n",
478 return _winbindd_socket;
481 /* Close the winbindd socket */
483 void close_winbindd_socket(void)
485 if (_winbindd_socket != -1) {
486 DEBUG(10, ("close_winbindd_socket: closing socket fd %d\n",
488 close(_winbindd_socket);
489 _winbindd_socket = -1;
494 * Client list accessor functions
497 static struct winbindd_cli_state *_client_list;
498 static int _num_clients;
500 /* Return list of all connected clients */
502 struct winbindd_cli_state *winbindd_client_list(void)
507 /* Add a connection to the list */
509 void winbindd_add_client(struct winbindd_cli_state *cli)
511 DLIST_ADD(_client_list, cli);
515 /* Remove a client from the list */
517 void winbindd_remove_client(struct winbindd_cli_state *cli)
519 DLIST_REMOVE(_client_list, cli);
523 /* Close all open clients */
525 void winbindd_kill_all_clients(void)
527 struct winbindd_cli_state *cl = winbindd_client_list();
529 DEBUG(10, ("winbindd_kill_all_clients: going postal\n"));
532 struct winbindd_cli_state *next;
535 winbindd_remove_client(cl);
540 /* Return number of open clients */
542 int winbindd_num_clients(void)