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.
28 * @file winbindd_util.c
30 * Winbind daemon for NT domain authentication nss module.
35 * Used to clobber name fields that have an undefined value.
37 * Correct code should never look at a field that has this value.
40 static const fstring name_deadbeef = "<deadbeef>";
42 /* The list of trusted domains. Note that the list can be deleted and
43 recreated using the init_domain_list() function so pointers to
44 individual winbindd_domain structures cannot be made. Keep a copy of
45 the domain name instead. */
47 static struct winbindd_domain *_domain_list;
49 struct winbindd_domain *domain_list(void)
59 /* Free all entries in the trusted domain list */
61 void free_domain_list(void)
63 struct winbindd_domain *domain = _domain_list;
66 struct winbindd_domain *next = domain->next;
68 DLIST_REMOVE(_domain_list, domain);
74 /* Add a trusted domain to our list of domains */
76 static struct winbindd_domain *add_trusted_domain(char *domain_name,
77 struct winbindd_methods *methods)
79 struct winbindd_domain *domain;
81 /* We can't call domain_list() as this function is called from
82 init_domain_list() and we'll get stuck in a loop. */
84 for (domain = _domain_list; domain; domain = domain->next) {
85 if (strcmp(domain_name, domain->name) == 0) {
86 DEBUG(3, ("domain %s already in domain list\n",
92 /* Create new domain entry */
94 if ((domain = (struct winbindd_domain *)
95 malloc(sizeof(*domain))) == NULL)
100 ZERO_STRUCTP(domain);
102 fstrcpy(domain->name, domain_name);
103 domain->methods = methods;
104 domain->sequence_number = DOM_SEQUENCE_NONE;
105 domain->last_seq_check = 0;
107 /* Link to domain list */
109 DLIST_ADD(_domain_list, domain);
114 /* Look up global info for the winbind daemon */
116 BOOL init_domain_list(void)
120 extern struct winbindd_methods cache_methods;
121 struct winbindd_domain *domain;
126 if (!(mem_ctx = talloc_init_named("init_domain_list")))
129 /* Free existing list */
133 /* Add ourselves as the first entry */
135 domain = add_trusted_domain(lp_workgroup(), &cache_methods);
137 /* Now we *must* get the domain sid for our primary domain. Go into
138 a holding pattern until that is available */
140 result = cache_methods.domain_sid(domain, &domain->sid);
141 while (!NT_STATUS_IS_OK(result)) {
143 DEBUG(1,("Retrying startup domain sid fetch for %s\n",
145 result = cache_methods.domain_sid(domain, &domain->sid);
148 DEBUG(1,("Added domain %s (%s)\n",
150 sid_string_static(&domain->sid)));
152 DEBUG(1, ("getting trusted domain list\n"));
154 result = cache_methods.trusted_domains(domain, mem_ctx, &num_domains,
157 /* Add each domain to the trusted domain list */
158 if (NT_STATUS_IS_OK(result)) {
160 for(i = 0; i < num_domains; i++) {
161 domain = add_trusted_domain(names[i], &cache_methods);
162 if (!domain) continue;
163 sid_copy(&domain->sid, &dom_sids[i]);
164 DEBUG(1,("Added domain %s (%s)\n",
166 sid_string_static(&domain->sid)));
168 /* this primes the connection */
169 cache_methods.domain_sid(domain, &domain->sid);
173 talloc_destroy(mem_ctx);
177 /* Given a domain name, return the struct winbindd domain info for it
178 if it is actually working. */
180 struct winbindd_domain *find_domain_from_name(const char *domain_name)
182 struct winbindd_domain *domain;
184 /* Search through list */
186 for (domain = domain_list(); domain != NULL; domain = domain->next) {
187 if (strequal(domain_name, domain->name) ||
188 strequal(domain_name, domain->full_name))
197 /* Given a domain sid, return the struct winbindd domain info for it */
199 struct winbindd_domain *find_domain_from_sid(DOM_SID *sid)
201 struct winbindd_domain *domain;
203 /* Search through list */
205 for (domain = domain_list(); domain != NULL; domain = domain->next) {
206 if (sid_compare_domain(sid, &domain->sid) == 0)
215 /* Lookup a sid in a domain from a name */
217 BOOL winbindd_lookup_sid_by_name(struct winbindd_domain *domain,
218 const char *name, DOM_SID *sid,
219 enum SID_NAME_USE *type)
223 /* Don't bother with machine accounts */
225 if (name[strlen(name) - 1] == '$')
229 result = domain->methods->name_to_sid(domain, name, sid, type);
231 /* Return rid and type if lookup successful */
232 if (!NT_STATUS_IS_OK(result)) {
233 *type = SID_NAME_UNKNOWN;
236 return NT_STATUS_IS_OK(result);
240 * @brief Lookup a name in a domain from a sid.
242 * @param sid Security ID you want to look up.
244 * @param name On success, set to the name corresponding to @p sid.
246 * @param dom_name On success, set to the 'domain name' corresponding to @p sid.
248 * @param type On success, contains the type of name: alias, group or
251 * @retval True if the name exists, in which case @p name and @p type
252 * are set, otherwise False.
254 BOOL winbindd_lookup_name_by_sid(DOM_SID *sid,
257 enum SID_NAME_USE *type)
263 struct winbindd_domain *domain;
265 domain = find_domain_from_sid(sid);
268 DEBUG(1,("Can't find domain from sid\n"));
274 if (!(mem_ctx = talloc_init_named("winbindd_lookup_name_by_sid")))
277 result = domain->methods->sid_to_name(domain, mem_ctx, sid, &names, type);
279 /* Return name and type if successful */
281 if ((rv = NT_STATUS_IS_OK(result))) {
282 fstrcpy(dom_name, domain->name);
283 fstrcpy(name, names);
285 *type = SID_NAME_UNKNOWN;
286 fstrcpy(name, name_deadbeef);
289 talloc_destroy(mem_ctx);
295 /* Free state information held for {set,get,end}{pw,gr}ent() functions */
297 void free_getent_state(struct getent_state *state)
299 struct getent_state *temp;
301 /* Iterate over state list */
305 while(temp != NULL) {
306 struct getent_state *next;
308 /* Free sam entries then list entry */
310 SAFE_FREE(state->sam_entries);
311 DLIST_REMOVE(state, state);
319 /* Initialise trusted domain info */
321 BOOL winbindd_param_init(void)
323 /* Parse winbind uid and winbind_gid parameters */
325 if (!lp_winbind_uid(&server_state.uid_low, &server_state.uid_high)) {
326 DEBUG(0, ("winbind uid range missing or invalid\n"));
330 if (!lp_winbind_gid(&server_state.gid_low, &server_state.gid_high)) {
331 DEBUG(0, ("winbind gid range missing or invalid\n"));
338 /* Check if a domain is present in a comma-separated list of domains */
340 BOOL check_domain_env(char *domain_env, char *domain)
343 char *tmp = domain_env;
345 while(next_token(&tmp, name, ",", sizeof(fstring))) {
346 if (strequal(name, domain))
353 /* Parse a string of the form DOMAIN/user into a domain and a user */
354 extern fstring global_myworkgroup;
356 BOOL parse_domain_user(const char *domuser, fstring domain, fstring user)
358 char *p = strchr(domuser,*lp_winbind_separator());
360 if (!(p || lp_winbind_use_default_domain()))
363 if(!p && lp_winbind_use_default_domain()) {
364 fstrcpy(user, domuser);
365 fstrcpy(domain, global_myworkgroup);
368 fstrcpy(domain, domuser);
369 domain[PTR_DIFF(p, domuser)] = 0;
376 Fill DOMAIN\\USERNAME entry accounting 'winbind use default domain' and
377 'winbind separator' options.
379 - omit DOMAIN when 'winbind use default domain = true' and DOMAIN is
383 void fill_domain_username(fstring name, const char *domain, const char *user)
385 if(lp_winbind_use_default_domain() &&
386 !strcmp(global_myworkgroup, domain)) {
387 strlcpy(name, user, sizeof(fstring));
389 slprintf(name, sizeof(fstring) - 1, "%s%s%s",
390 domain, lp_winbind_separator(),