2 Unix SMB/CIFS implementation.
4 Copyright (C) Tim Potter 2000
5 Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
6 Copyright (C) Simo Sorce 2003-2007
7 Copyright (C) Jeremy Allison 2006
8 Copyright (C) Michael Adam 2010
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
27 #include "lib/util_sid_passdb.h"
31 #define DBGC_CLASS DBGC_IDMAP
35 static void idmap_init(void)
37 static bool initialized
;
43 DEBUG(10, ("idmap_init(): calling static_init_idmap\n"));
51 * Pointer to the backend methods. Modules register themselves here via
55 struct idmap_backend
{
57 struct idmap_methods
*methods
;
58 struct idmap_backend
*prev
, *next
;
60 static struct idmap_backend
*backends
= NULL
;
63 * Default idmap domain configured via "idmap backend".
65 static struct idmap_domain
*default_idmap_domain
;
68 * Passdb idmap domain, not configurable. winbind must always give passdb a
71 static struct idmap_domain
*passdb_idmap_domain
;
74 * List of specially configured idmap domains. This list is filled on demand
75 * in the winbind idmap child when the parent winbind figures out via the
76 * special range parameter or via the domain SID that a special "idmap config
77 * domain" configuration is present.
79 static struct idmap_domain
**idmap_domains
= NULL
;
80 static int num_domains
= 0;
82 static struct idmap_methods
*get_methods(const char *name
)
84 struct idmap_backend
*b
;
86 for (b
= backends
; b
; b
= b
->next
) {
87 if (strequal(b
->name
, name
)) {
95 bool idmap_is_offline(void)
97 return ( lp_winbind_offline_logon() &&
98 get_global_winbindd_state_offline() );
101 bool idmap_is_online(void)
103 return !idmap_is_offline();
106 /**********************************************************************
107 Allow a module to register itself as a method.
108 **********************************************************************/
110 NTSTATUS
smb_register_idmap(int version
, const char *name
,
111 struct idmap_methods
*methods
)
113 struct idmap_backend
*entry
;
115 if ((version
!= SMB_IDMAP_INTERFACE_VERSION
)) {
116 DEBUG(0, ("Failed to register idmap module.\n"
117 "The module was compiled against "
118 "SMB_IDMAP_INTERFACE_VERSION %d,\n"
119 "current SMB_IDMAP_INTERFACE_VERSION is %d.\n"
120 "Please recompile against the current version "
122 version
, SMB_IDMAP_INTERFACE_VERSION
));
123 return NT_STATUS_OBJECT_TYPE_MISMATCH
;
126 if (!name
|| !name
[0] || !methods
) {
127 DEBUG(0,("Called with NULL pointer or empty name!\n"));
128 return NT_STATUS_INVALID_PARAMETER
;
131 for (entry
= backends
; entry
!= NULL
; entry
= entry
->next
) {
132 if (strequal(entry
->name
, name
)) {
133 DEBUG(5,("Idmap module %s already registered!\n",
135 return NT_STATUS_OBJECT_NAME_COLLISION
;
139 entry
= talloc(NULL
, struct idmap_backend
);
141 DEBUG(0,("Out of memory!\n"));
143 return NT_STATUS_NO_MEMORY
;
145 entry
->name
= talloc_strdup(entry
, name
);
146 if ( ! entry
->name
) {
147 DEBUG(0,("Out of memory!\n"));
149 return NT_STATUS_NO_MEMORY
;
151 entry
->methods
= methods
;
153 DLIST_ADD(backends
, entry
);
154 DEBUG(5, ("Successfully added idmap backend '%s'\n", name
));
159 * Initialize a domain structure
160 * @param[in] mem_ctx memory context for the result
161 * @param[in] domainname which domain is this for
162 * @param[in] modulename which backend module
163 * @param[in] check_range whether range checking should be done
164 * @result The initialized structure
166 static struct idmap_domain
*idmap_init_domain(TALLOC_CTX
*mem_ctx
,
167 const char *domainname
,
168 const char *modulename
,
171 struct idmap_domain
*result
;
173 char *config_option
= NULL
;
176 result
= talloc_zero(mem_ctx
, struct idmap_domain
);
177 if (result
== NULL
) {
178 DEBUG(0, ("talloc failed\n"));
182 result
->name
= talloc_strdup(result
, domainname
);
183 if (result
->name
== NULL
) {
184 DEBUG(0, ("talloc failed\n"));
189 * load ranges and read only information from the config
192 config_option
= talloc_asprintf(result
, "idmap config %s",
194 if (config_option
== NULL
) {
195 DEBUG(0, ("Out of memory!\n"));
199 range
= lp_parm_const_string(-1, config_option
, "range", NULL
);
201 DEBUG(1, ("idmap range not specified for domain %s\n",
206 } else if (sscanf(range
, "%u - %u", &result
->low_id
,
207 &result
->high_id
) != 2)
209 DEBUG(1, ("invalid range '%s' specified for domain "
210 "'%s'\n", range
, result
->name
));
216 result
->read_only
= lp_parm_bool(-1, config_option
, "read only", false);
218 talloc_free(config_option
);
220 if (result
->low_id
> result
->high_id
) {
221 DEBUG(1, ("Error: invalid idmap range detected: %lu - %lu\n",
222 (unsigned long)result
->low_id
,
223 (unsigned long)result
->high_id
));
229 result
->methods
= get_methods(modulename
);
230 if (result
->methods
== NULL
) {
231 DEBUG(3, ("idmap backend %s not found\n", modulename
));
233 status
= smb_probe_module("idmap", modulename
);
234 if (!NT_STATUS_IS_OK(status
)) {
235 DEBUG(3, ("Could not probe idmap module %s\n",
240 result
->methods
= get_methods(modulename
);
242 if (result
->methods
== NULL
) {
243 DEBUG(1, ("idmap backend %s not found\n", modulename
));
247 status
= result
->methods
->init(result
);
248 if (!NT_STATUS_IS_OK(status
)) {
249 DEBUG(1, ("idmap initialization returned %s\n",
262 * Initialize a named domain structure
263 * @param[in] mem_ctx memory context for the result
264 * @param[in] domname the domain name
265 * @result The default domain structure
267 * This routine looks at the "idmap config <domname>" parameters to figure out
271 static struct idmap_domain
*idmap_init_named_domain(TALLOC_CTX
*mem_ctx
,
274 struct idmap_domain
*result
= NULL
;
280 config_option
= talloc_asprintf(talloc_tos(), "idmap config %s",
282 if (config_option
== NULL
) {
283 DEBUG(0, ("talloc failed\n"));
287 backend
= lp_parm_const_string(-1, config_option
, "backend", NULL
);
288 if (backend
== NULL
) {
289 DEBUG(10, ("no idmap backend configured for domain '%s'\n",
294 result
= idmap_init_domain(mem_ctx
, domname
, backend
, true);
295 if (result
== NULL
) {
299 TALLOC_FREE(config_option
);
303 TALLOC_FREE(config_option
);
309 * Initialize the default domain structure
310 * @param[in] mem_ctx memory context for the result
311 * @result The default domain structure
313 * This routine takes the module name from the "idmap backend" parameter,
314 * passing a possible parameter like ldap:ldap://ldap-url/ to the module.
317 static struct idmap_domain
*idmap_init_default_domain(TALLOC_CTX
*mem_ctx
)
319 return idmap_init_named_domain(mem_ctx
, "*");
323 * Initialize the passdb domain structure
324 * @param[in] mem_ctx memory context for the result
325 * @result The default domain structure
327 * No config, passdb has its own configuration.
330 static struct idmap_domain
*idmap_passdb_domain(TALLOC_CTX
*mem_ctx
)
334 if (!pdb_is_responsible_for_everything_else()) {
336 * Always init the default domain, we can't go without one
338 if (default_idmap_domain
== NULL
) {
339 default_idmap_domain
= idmap_init_default_domain(NULL
);
341 if (default_idmap_domain
== NULL
) {
346 if (passdb_idmap_domain
!= NULL
) {
347 return passdb_idmap_domain
;
350 passdb_idmap_domain
= idmap_init_domain(NULL
, get_global_sam_name(),
352 if (passdb_idmap_domain
== NULL
) {
353 DEBUG(1, ("Could not init passdb idmap domain\n"));
356 return passdb_idmap_domain
;
360 * Find a domain struct according to a domain name
361 * @param[in] domname Domain name to get the config for
362 * @result The default domain structure that fits
364 * This is the central routine in the winbindd-idmap child to pick the correct
365 * domain for looking up IDs. If domname is NULL or empty, we use the default
366 * domain. If it contains something, we try to use idmap_init_named_domain()
367 * to fetch the correct backend.
369 * The choice about "domname" is being made by the winbind parent, look at the
370 * "have_idmap_config" of "struct winbindd_domain" which is set in
371 * add_trusted_domain.
374 static struct idmap_domain
*idmap_find_domain(const char *domname
)
376 struct idmap_domain
*result
;
379 DEBUG(10, ("idmap_find_domain called for domain '%s'\n",
380 domname
?domname
:"NULL"));
385 * Always init the default domain, we can't go without one
387 if (default_idmap_domain
== NULL
) {
388 default_idmap_domain
= idmap_init_default_domain(NULL
);
390 if (default_idmap_domain
== NULL
) {
394 if ((domname
== NULL
) || (domname
[0] == '\0')) {
395 return default_idmap_domain
;
398 for (i
=0; i
<num_domains
; i
++) {
399 if (strequal(idmap_domains
[i
]->name
, domname
)) {
400 return idmap_domains
[i
];
404 if (idmap_domains
== NULL
) {
406 * talloc context for all idmap domains
408 idmap_domains
= talloc_array(NULL
, struct idmap_domain
*, 1);
411 if (idmap_domains
== NULL
) {
412 DEBUG(0, ("talloc failed\n"));
416 result
= idmap_init_named_domain(idmap_domains
, domname
);
417 if (result
== NULL
) {
419 * Could not init that domain -- try the default one
421 return default_idmap_domain
;
424 ADD_TO_ARRAY(idmap_domains
, struct idmap_domain
*, result
,
425 &idmap_domains
, &num_domains
);
429 struct idmap_domain
*idmap_find_domain_with_sid(const char *domname
,
430 const struct dom_sid
*sid
)
434 if (sid_check_is_for_passdb(sid
)) {
435 return idmap_passdb_domain(NULL
);
438 return idmap_find_domain(domname
);
441 void idmap_close(void)
443 TALLOC_FREE(default_idmap_domain
);
444 TALLOC_FREE(passdb_idmap_domain
);
445 TALLOC_FREE(idmap_domains
);
449 /**************************************************************************
450 idmap allocator interface functions
451 **************************************************************************/
453 static NTSTATUS
idmap_allocate_unixid(struct unixid
*id
)
455 struct idmap_domain
*dom
;
458 dom
= idmap_find_domain(NULL
);
461 return NT_STATUS_UNSUCCESSFUL
;
464 if (dom
->methods
->allocate_id
== NULL
) {
465 return NT_STATUS_NOT_IMPLEMENTED
;
468 ret
= dom
->methods
->allocate_id(dom
, id
);
474 NTSTATUS
idmap_allocate_uid(struct unixid
*id
)
476 id
->type
= ID_TYPE_UID
;
477 return idmap_allocate_unixid(id
);
480 NTSTATUS
idmap_allocate_gid(struct unixid
*id
)
482 id
->type
= ID_TYPE_GID
;
483 return idmap_allocate_unixid(id
);
486 NTSTATUS
idmap_backends_unixid_to_sid(const char *domname
, struct id_map
*id
)
488 struct idmap_domain
*dom
;
489 struct id_map
*maps
[2];
491 DEBUG(10, ("idmap_backend_unixid_to_sid: domain = '%s', xid = %d "
493 domname
?domname
:"NULL", id
->xid
.id
, id
->xid
.type
));
499 * Always give passdb a chance first
502 dom
= idmap_passdb_domain(NULL
);
504 && NT_STATUS_IS_OK(dom
->methods
->unixids_to_sids(dom
, maps
))
505 && id
->status
== ID_MAPPED
) {
509 dom
= idmap_find_domain(domname
);
511 return NT_STATUS_NONE_MAPPED
;
514 return dom
->methods
->unixids_to_sids(dom
, maps
);