2 Unix SMB/Netbios 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);
163 sid_copy(&domain->sid, &dom_sids[i]);
165 DEBUG(1,("Added domain %s (%s)\n",
167 sid_string_static(&domain->sid)));
169 /* this primes the connection */
170 cache_methods.domain_sid(domain, &domain->sid);
174 talloc_destroy(mem_ctx);
178 /* Given a domain name, return the struct winbindd domain info for it
179 if it is actually working. */
181 struct winbindd_domain *find_domain_from_name(char *domain_name)
183 struct winbindd_domain *domain;
185 /* Search through list */
187 for (domain = domain_list(); domain != NULL; domain = domain->next) {
188 if (strequal(domain_name, domain->name) ||
189 strequal(domain_name, domain->full_name))
198 /* Given a domain sid, return the struct winbindd domain info for it */
200 struct winbindd_domain *find_domain_from_sid(DOM_SID *sid)
202 struct winbindd_domain *domain;
204 /* Search through list */
206 for (domain = domain_list(); domain != NULL; domain = domain->next) {
207 if (sid_compare_domain(sid, &domain->sid) == 0)
216 /* Lookup a sid in a domain from a name */
218 BOOL winbindd_lookup_sid_by_name(struct winbindd_domain *domain,
219 const char *name, DOM_SID *sid,
220 enum SID_NAME_USE *type)
224 /* Don't bother with machine accounts */
226 if (name[strlen(name) - 1] == '$')
230 result = domain->methods->name_to_sid(domain, name, sid, type);
232 /* Return rid and type if lookup successful */
233 if (!NT_STATUS_IS_OK(result)) {
234 *type = SID_NAME_UNKNOWN;
237 return NT_STATUS_IS_OK(result);
241 * @brief Lookup a name in a domain from a sid.
243 * @param sid Security ID you want to look up.
245 * @param name On success, set to the name corresponding to @p sid.
247 * @param type On success, contains the type of name: alias, group or
250 * @retval True if the name exists, in which case @p name and @p type
251 * are set, otherwise False.
253 BOOL winbindd_lookup_name_by_sid(DOM_SID *sid,
255 enum SID_NAME_USE *type)
261 struct winbindd_domain *domain;
263 domain = find_domain_from_sid(sid);
266 DEBUG(1,("Can't find domain from sid\n"));
272 if (!(mem_ctx = talloc_init_named("winbindd_lookup_name_by_sid")))
275 result = domain->methods->sid_to_name(domain, mem_ctx, sid, &names, type);
277 /* Return name and type if successful */
279 if ((rv = NT_STATUS_IS_OK(result))) {
280 fstrcpy(name, names);
282 *type = SID_NAME_UNKNOWN;
283 fstrcpy(name, name_deadbeef);
286 talloc_destroy(mem_ctx);
292 /* Free state information held for {set,get,end}{pw,gr}ent() functions */
294 void free_getent_state(struct getent_state *state)
296 struct getent_state *temp;
298 /* Iterate over state list */
302 while(temp != NULL) {
303 struct getent_state *next;
305 /* Free sam entries then list entry */
307 SAFE_FREE(state->sam_entries);
308 DLIST_REMOVE(state, state);
316 /* Initialise trusted domain info */
318 BOOL winbindd_param_init(void)
320 /* Parse winbind uid and winbind_gid parameters */
322 if (!lp_winbind_uid(&server_state.uid_low, &server_state.uid_high)) {
323 DEBUG(0, ("winbind uid range missing or invalid\n"));
327 if (!lp_winbind_gid(&server_state.gid_low, &server_state.gid_high)) {
328 DEBUG(0, ("winbind gid range missing or invalid\n"));
335 /* Check if a domain is present in a comma-separated list of domains */
337 BOOL check_domain_env(char *domain_env, char *domain)
340 char *tmp = domain_env;
342 while(next_token(&tmp, name, ",", sizeof(fstring))) {
343 if (strequal(name, domain))
350 /* Parse a string of the form DOMAIN/user into a domain and a user */
352 BOOL parse_domain_user(const char *domuser, fstring domain, fstring user)
354 char *p = strchr(domuser,*lp_winbind_separator());
360 fstrcpy(domain, domuser);
361 domain[PTR_DIFF(p, domuser)] = 0;