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);
76 /* Add a trusted domain to our list of domains */
78 static struct winbindd_domain *add_trusted_domain(char *domain_name,
79 struct winbindd_methods *methods)
81 struct winbindd_domain *domain;
83 /* We can't call domain_list() as this function is called from
84 init_domain_list() and we'll get stuck in a loop. */
86 for (domain = _domain_list; domain; domain = domain->next) {
87 if (strcmp(domain_name, domain->name) == 0) {
88 DEBUG(3, ("domain %s already in domain list\n",
94 /* Create new domain entry */
96 if ((domain = (struct winbindd_domain *)
97 malloc(sizeof(*domain))) == NULL)
102 ZERO_STRUCTP(domain);
104 fstrcpy(domain->name, domain_name);
105 domain->methods = methods;
106 domain->sequence_number = DOM_SEQUENCE_NONE;
107 domain->last_seq_check = 0;
109 /* Link to domain list */
111 DLIST_ADD(_domain_list, domain);
116 /* Look up global info for the winbind daemon */
118 BOOL init_domain_list(void)
122 extern struct winbindd_methods cache_methods;
123 struct winbindd_domain *domain;
128 if (!(mem_ctx = talloc_init_named("init_domain_list")))
131 /* Free existing list */
135 /* Add ourselves as the first entry */
137 domain = add_trusted_domain(lp_workgroup(), &cache_methods);
139 /* Now we *must* get the domain sid for our primary domain. Go into
140 a holding pattern until that is available */
142 result = cache_methods.domain_sid(domain, &domain->sid);
143 while (!NT_STATUS_IS_OK(result)) {
145 DEBUG(1,("Retrying startup domain sid fetch for %s\n",
147 result = cache_methods.domain_sid(domain, &domain->sid);
150 DEBUG(1,("Added domain %s (%s)\n",
152 sid_string_static(&domain->sid)));
154 DEBUG(1, ("getting trusted domain list\n"));
156 result = cache_methods.trusted_domains(domain, mem_ctx, &num_domains,
159 /* Add each domain to the trusted domain list */
160 if (NT_STATUS_IS_OK(result)) {
162 for(i = 0; i < num_domains; i++) {
163 domain = add_trusted_domain(names[i], &cache_methods);
164 if (!domain) continue;
165 sid_copy(&domain->sid, &dom_sids[i]);
166 DEBUG(1,("Added domain %s (%s)\n",
168 sid_string_static(&domain->sid)));
172 talloc_destroy(mem_ctx);
176 /* Given a domain name, return the struct winbindd domain info for it
177 if it is actually working. */
179 struct winbindd_domain *find_domain_from_name(const char *domain_name)
181 struct winbindd_domain *domain;
183 /* Search through list */
185 for (domain = domain_list(); domain != NULL; domain = domain->next) {
186 if (strequal(domain_name, domain->name) ||
187 strequal(domain_name, domain->full_name))
196 /* Given a domain sid, return the struct winbindd domain info for it */
198 struct winbindd_domain *find_domain_from_sid(DOM_SID *sid)
200 struct winbindd_domain *domain;
202 /* Search through list */
204 for (domain = domain_list(); domain != NULL; domain = domain->next) {
205 if (sid_compare_domain(sid, &domain->sid) == 0)
214 /* Lookup a sid in a domain from a name */
216 BOOL winbindd_lookup_sid_by_name(struct winbindd_domain *domain,
217 const char *name, DOM_SID *sid,
218 enum SID_NAME_USE *type)
222 /* Don't bother with machine accounts */
224 if (name[strlen(name) - 1] == '$')
228 result = domain->methods->name_to_sid(domain, name, sid, type);
230 /* Return rid and type if lookup successful */
231 if (!NT_STATUS_IS_OK(result)) {
232 *type = SID_NAME_UNKNOWN;
235 return NT_STATUS_IS_OK(result);
239 * @brief Lookup a name in a domain from a sid.
241 * @param sid Security ID you want to look up.
243 * @param name On success, set to the name corresponding to @p sid.
245 * @param dom_name On success, set to the 'domain 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,
256 enum SID_NAME_USE *type)
262 struct winbindd_domain *domain;
264 domain = find_domain_from_sid(sid);
267 DEBUG(1,("Can't find domain from sid\n"));
273 if (!(mem_ctx = talloc_init_named("winbindd_lookup_name_by_sid")))
276 result = domain->methods->sid_to_name(domain, mem_ctx, sid, &names, type);
278 /* Return name and type if successful */
280 if ((rv = NT_STATUS_IS_OK(result))) {
281 fstrcpy(dom_name, domain->name);
282 fstrcpy(name, names);
284 *type = SID_NAME_UNKNOWN;
285 fstrcpy(name, name_deadbeef);
288 talloc_destroy(mem_ctx);
294 /* Free state information held for {set,get,end}{pw,gr}ent() functions */
296 void free_getent_state(struct getent_state *state)
298 struct getent_state *temp;
300 /* Iterate over state list */
304 while(temp != NULL) {
305 struct getent_state *next;
307 /* Free sam entries then list entry */
309 SAFE_FREE(state->sam_entries);
310 DLIST_REMOVE(state, state);
318 /* Initialise trusted domain info */
320 BOOL winbindd_param_init(void)
322 /* Parse winbind uid and winbind_gid parameters */
324 if (!lp_winbind_uid(&server_state.uid_low, &server_state.uid_high)) {
325 DEBUG(0, ("winbind uid range missing or invalid\n"));
329 if (!lp_winbind_gid(&server_state.gid_low, &server_state.gid_high)) {
330 DEBUG(0, ("winbind gid range missing or invalid\n"));
337 /* Check if a domain is present in a comma-separated list of domains */
339 BOOL check_domain_env(char *domain_env, char *domain)
342 char *tmp = domain_env;
344 while(next_token(&tmp, name, ",", sizeof(fstring))) {
345 if (strequal(name, domain))
352 /* Parse a string of the form DOMAIN/user into a domain and a user */
353 extern fstring global_myworkgroup;
355 BOOL parse_domain_user(const char *domuser, fstring domain, fstring user)
357 char *p = strchr(domuser,*lp_winbind_separator());
359 if (!(p || lp_winbind_use_default_domain()))
362 if(!p && lp_winbind_use_default_domain()) {
363 fstrcpy(user, domuser);
364 fstrcpy(domain, global_myworkgroup);
367 fstrcpy(domain, domuser);
368 domain[PTR_DIFF(p, domuser)] = 0;
375 Fill DOMAIN\\USERNAME entry accounting 'winbind use default domain' and
376 'winbind separator' options.
378 - omit DOMAIN when 'winbind use default domain = true' and DOMAIN is
382 void fill_domain_username(fstring name, const char *domain, const char *user)
384 if(lp_winbind_use_default_domain() &&
385 !strcmp(global_myworkgroup, domain)) {
386 strlcpy(name, user, sizeof(fstring));
388 slprintf(name, sizeof(fstring) - 1, "%s%s%s",
389 domain, lp_winbind_separator(),