Copyright (C) Andrew Tridgell 1992-1998
Copyright (C) Gerald (Jerry) Carter 2003
Copyright (C) Volker Lendecke 2005
-
+
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
-
+
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-
+
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
+#include "passdb.h"
+#include "../librpc/gen_ndr/ndr_security.h"
+#include "secrets.h"
+#include "memcache.h"
+#include "idmap_cache.h"
+#include "../libcli/security/security.h"
+#include "lib/winbind_util.h"
+#include "../librpc/gen_ndr/idmap.h"
/*****************************************************************
Dissect a user-provided name into domain, name, sid and type.
bool lookup_name(TALLOC_CTX *mem_ctx,
const char *full_name, int flags,
const char **ret_domain, const char **ret_name,
- DOM_SID *ret_sid, enum lsa_SidType *ret_type)
+ struct dom_sid *ret_sid, enum lsa_SidType *ret_type)
{
char *p;
const char *tmp;
const char *domain = NULL;
const char *name = NULL;
uint32 rid;
- DOM_SID sid;
+ struct dom_sid sid;
enum lsa_SidType type;
TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
return false;
}
- DEBUG(10,("lookup_name: %s => %s (domain), %s (name)\n",
+ DEBUG(10,("lookup_name: %s => domain=[%s], name=[%s]\n",
full_name, domain, name));
DEBUG(10, ("lookup_name: flags = 0x0%x\n", flags));
/* It's our own domain, lookup the name in passdb */
if (lookup_global_sam_name(name, flags, &rid, &type)) {
- sid_copy(&sid, get_global_sam_sid());
- sid_append_rid(&sid, rid);
+ sid_compose(&sid, get_global_sam_sid(), rid);
goto ok;
}
TALLOC_FREE(tmp_ctx);
if ((flags & LOOKUP_NAME_BUILTIN) &&
strequal(domain, builtin_domain_name()))
{
+ if (strlen(name) == 0) {
+ /* Swap domain and name */
+ tmp = name; name = domain; domain = tmp;
+ sid_copy(&sid, &global_sid_Builtin);
+ type = SID_NAME_DOMAIN;
+ goto ok;
+ }
+
/* Explicit request for a name in BUILTIN */
if (lookup_builtin_name(name, &rid)) {
- sid_copy(&sid, &global_sid_Builtin);
- sid_append_rid(&sid, rid);
+ sid_compose(&sid, &global_sid_Builtin, rid);
type = SID_NAME_ALIAS;
goto ok;
}
goto ok;
}
- if (!(flags & LOOKUP_NAME_EXPLICIT) && strequal(domain, unix_users_domain_name())) {
+ if (((flags & LOOKUP_NAME_NO_NSS) == 0)
+ && strequal(domain, unix_users_domain_name())) {
if (lookup_unix_user_name(name, &sid)) {
type = SID_NAME_USER;
goto ok;
return false;
}
- if (!(flags & LOOKUP_NAME_EXPLICIT) && strequal(domain, unix_groups_domain_name())) {
+ if (((flags & LOOKUP_NAME_NO_NSS) == 0)
+ && strequal(domain, unix_groups_domain_name())) {
if (lookup_unix_group_name(name, &sid)) {
type = SID_NAME_DOM_GRP;
goto ok;
lookup_builtin_name(name, &rid))
{
domain = talloc_strdup(tmp_ctx, builtin_domain_name());
- sid_copy(&sid, &global_sid_Builtin);
- sid_append_rid(&sid, rid);
+ sid_compose(&sid, &global_sid_Builtin, rid);
type = SID_NAME_ALIAS;
goto ok;
}
lookup_global_sam_name(name, flags, &rid, &type))
{
domain = talloc_strdup(tmp_ctx, get_global_sam_name());
- sid_copy(&sid, get_global_sam_sid());
- sid_append_rid(&sid, rid);
+ sid_compose(&sid, get_global_sam_sid(), rid);
goto ok;
}
* that (yet), but give it a chance. */
if (IS_DC && winbind_lookup_name("", name, &sid, &type)) {
- DOM_SID dom_sid;
- uint32 tmp_rid;
+ struct dom_sid dom_sid;
enum lsa_SidType domain_type;
-
+
if (type == SID_NAME_DOMAIN) {
/* Swap name and type */
tmp = name; name = domain; domain = tmp;
* domain it figured out itself. Maybe fix that later... */
sid_copy(&dom_sid, &sid);
- sid_split_rid(&dom_sid, &tmp_rid);
+ sid_split_rid(&dom_sid, NULL);
if (!winbind_lookup_sid(tmp_ctx, &dom_sid, &domain, NULL,
&domain_type) ||
/* 11. Ok, windows would end here. Samba has two more options:
Unmapped users and unmapped groups */
- if (!(flags & LOOKUP_NAME_EXPLICIT) && lookup_unix_user_name(name, &sid)) {
+ if (((flags & LOOKUP_NAME_NO_NSS) == 0)
+ && lookup_unix_user_name(name, &sid)) {
domain = talloc_strdup(tmp_ctx, unix_users_domain_name());
type = SID_NAME_USER;
goto ok;
}
- if (!(flags & LOOKUP_NAME_EXPLICIT) && lookup_unix_group_name(name, &sid)) {
+ if (((flags & LOOKUP_NAME_NO_NSS) == 0)
+ && lookup_unix_group_name(name, &sid)) {
domain = talloc_strdup(tmp_ctx, unix_groups_domain_name());
type = SID_NAME_DOM_GRP;
goto ok;
TALLOC_FREE(tmp_ctx);
return false;
}
- strupper_m(tmp_dom);
+ if (!strupper_m(tmp_dom)) {
+ TALLOC_FREE(tmp_ctx);
+ return false;
+ }
*ret_domain = tmp_dom;
}
bool lookup_name_smbconf(TALLOC_CTX *mem_ctx,
const char *full_name, int flags,
const char **ret_domain, const char **ret_name,
- DOM_SID *ret_sid, enum lsa_SidType *ret_type)
+ struct dom_sid *ret_sid, enum lsa_SidType *ret_type)
{
char *qualified_name;
const char *p;
ret_sid, ret_type)) {
return true;
}
-
+
/* Finally try with "Unix Users" or "Unix Group" */
qualified_name = talloc_asprintf(mem_ctx, "%s\\%s",
flags & LOOKUP_NAME_GROUP ?
}
static bool wb_lookup_rids(TALLOC_CTX *mem_ctx,
- const DOM_SID *domain_sid,
+ const struct dom_sid *domain_sid,
int num_rids, uint32 *rids,
const char **domain_name,
const char **names, enum lsa_SidType *types)
return true;
}
-static bool lookup_rids(TALLOC_CTX *mem_ctx, const DOM_SID *domain_sid,
+static bool lookup_rids(TALLOC_CTX *mem_ctx, const struct dom_sid *domain_sid,
int num_rids, uint32_t *rids,
const char **domain_name,
const char ***names, enum lsa_SidType **types)
sid_string_dbg(domain_sid)));
if (num_rids) {
- *names = TALLOC_ARRAY(mem_ctx, const char *, num_rids);
- *types = TALLOC_ARRAY(mem_ctx, enum lsa_SidType, num_rids);
+ *names = talloc_zero_array(mem_ctx, const char *, num_rids);
+ *types = talloc_array(mem_ctx, enum lsa_SidType, num_rids);
if ((*names == NULL) || (*types == NULL)) {
return false;
}
+
+ for (i = 0; i < num_rids; i++)
+ (*types)[i] = SID_NAME_UNKNOWN;
} else {
*names = NULL;
*types = NULL;
}
- if (sid_check_is_domain(domain_sid)) {
+ if (sid_check_is_our_sam(domain_sid)) {
NTSTATUS result;
if (*domain_name == NULL) {
if (sid_check_is_wellknown_domain(domain_sid, NULL)) {
for (i=0; i<num_rids; i++) {
- DOM_SID sid;
- sid_copy(&sid, domain_sid);
- sid_append_rid(&sid, rids[i]);
+ struct dom_sid sid;
+ sid_compose(&sid, domain_sid, rids[i]);
if (lookup_wellknown_sid(mem_ctx, &sid,
domain_name, &(*names)[i])) {
if ((*names)[i] == NULL) {
* Is the SID a domain as such? If yes, lookup its name.
*/
-static bool lookup_as_domain(const DOM_SID *sid, TALLOC_CTX *mem_ctx,
+static bool lookup_as_domain(const struct dom_sid *sid, TALLOC_CTX *mem_ctx,
const char **name)
{
const char *tmp;
enum lsa_SidType type;
- if (sid_check_is_domain(sid)) {
+ if (sid_check_is_our_sam(sid)) {
*name = talloc_strdup(mem_ctx, get_global_sam_name());
return true;
}
}
for (i=0; i<num_domains; i++) {
- if (sid_equal(sid, &domains[i]->sid)) {
+ if (dom_sid_equal(sid, &domains[i]->sid)) {
*name = talloc_strdup(mem_ctx,
domains[i]->name);
return true;
* Level 6: Like 4
*/
-static bool check_dom_sid_to_level(const DOM_SID *sid, int level)
+static bool check_dom_sid_to_level(const struct dom_sid *sid, int level)
{
int ret = false;
case 3:
case 4:
case 6:
- ret = sid_check_is_domain(sid);
+ ret = sid_check_is_our_sam(sid);
break;
case 5:
ret = false;
* This attempts to be as efficient as possible: It collects all SIDs
* belonging to a domain and hands them in bulk to the appropriate lookup
* function. In particular pdb_lookup_rids with ldapsam_trusted benefits
- * *hugely* from this. Winbind is going to be extended with a lookup_rids
- * interface as well, so on a DC we can do a bulk lsa_lookuprids to the
- * appropriate DC.
+ * *hugely* from this.
*/
NTSTATUS lookup_sids(TALLOC_CTX *mem_ctx, int num_sids,
- const DOM_SID **sids, int level,
+ const struct dom_sid **sids, int level,
struct lsa_dom_info **ret_domains,
struct lsa_name_info **ret_names)
{
}
if (num_sids) {
- name_infos = TALLOC_ARRAY(mem_ctx, struct lsa_name_info, num_sids);
+ name_infos = talloc_array(mem_ctx, struct lsa_name_info, num_sids);
if (name_infos == NULL) {
result = NT_STATUS_NO_MEMORY;
goto fail;
name_infos = NULL;
}
- dom_infos = TALLOC_ZERO_ARRAY(mem_ctx, struct lsa_dom_info,
+ dom_infos = talloc_zero_array(mem_ctx, struct lsa_dom_info,
LSA_REF_DOMAIN_LIST_MULTIPLIER);
if (dom_infos == NULL) {
result = NT_STATUS_NO_MEMORY;
*/
for (i=0; i<num_sids; i++) {
- DOM_SID sid;
- uint32 rid;
+ struct dom_sid sid;
+ uint32_t rid = 0;
const char *domain_name = NULL;
sid_copy(&sid, sids[i]);
result = NT_STATUS_NO_MEMORY;
goto fail;
}
-
+
name_infos[i].rid = 0;
name_infos[i].type = SID_NAME_DOMAIN;
name_infos[i].name = NULL;
if (!dom_infos[j].valid) {
break;
}
- if (sid_equal(&sid, &dom_infos[j].sid)) {
+ if (dom_sid_equal(&sid, &dom_infos[j].sid)) {
break;
}
}
}
if (dom->num_idxs) {
- if (!(rids = TALLOC_ARRAY(tmp_ctx, uint32, dom->num_idxs))) {
+ if (!(rids = talloc_array(tmp_ctx, uint32, dom->num_idxs))) {
result = NT_STATUS_NO_MEMORY;
goto fail;
}
result = NT_STATUS_NO_MEMORY;
goto fail;
}
-
+
for (j=0; j<dom->num_idxs; j++) {
int idx = dom->idxs[j];
name_infos[idx].type = types[j];
*THE CANONICAL* convert SID to name function.
*****************************************************************/
-bool lookup_sid(TALLOC_CTX *mem_ctx, const DOM_SID *sid,
+bool lookup_sid(TALLOC_CTX *mem_ctx, const struct dom_sid *sid,
const char **ret_domain, const char **ret_name,
enum lsa_SidType *ret_type)
{
modified to use linked lists by jra.
*****************************************************************/
-/*****************************************************************
- Find a SID given a uid.
-*****************************************************************/
-
-static bool fetch_sid_from_uid_cache(DOM_SID *psid, uid_t uid)
-{
- DATA_BLOB cache_value;
-
- if (!memcache_lookup(NULL, UID_SID_CACHE,
- data_blob_const(&uid, sizeof(uid)),
- &cache_value)) {
- return false;
- }
-
- memcpy(psid, cache_value.data, MIN(sizeof(*psid), cache_value.length));
- SMB_ASSERT(cache_value.length >= offsetof(struct dom_sid, id_auth));
- SMB_ASSERT(cache_value.length == ndr_size_dom_sid(psid, NULL, 0));
-
- return true;
-}
-
-/*****************************************************************
- Find a uid given a SID.
-*****************************************************************/
-
-static bool fetch_uid_from_cache( uid_t *puid, const DOM_SID *psid )
-{
- DATA_BLOB cache_value;
-
- if (!memcache_lookup(NULL, SID_UID_CACHE,
- data_blob_const(psid, ndr_size_dom_sid(psid, NULL, 0)),
- &cache_value)) {
- return false;
- }
-
- SMB_ASSERT(cache_value.length == sizeof(*puid));
- memcpy(puid, cache_value.data, sizeof(*puid));
-
- return true;
-}
-
-/*****************************************************************
- Store uid to SID mapping in cache.
-*****************************************************************/
-
-void store_uid_sid_cache(const DOM_SID *psid, uid_t uid)
-{
- memcache_add(NULL, SID_UID_CACHE,
- data_blob_const(psid, ndr_size_dom_sid(psid, NULL, 0)),
- data_blob_const(&uid, sizeof(uid)));
- memcache_add(NULL, UID_SID_CACHE,
- data_blob_const(&uid, sizeof(uid)),
- data_blob_const(psid, ndr_size_dom_sid(psid, NULL, 0)));
-}
-
-/*****************************************************************
- Find a SID given a gid.
-*****************************************************************/
-
-static bool fetch_sid_from_gid_cache(DOM_SID *psid, gid_t gid)
-{
- DATA_BLOB cache_value;
-
- if (!memcache_lookup(NULL, GID_SID_CACHE,
- data_blob_const(&gid, sizeof(gid)),
- &cache_value)) {
- return false;
- }
-
- memcpy(psid, cache_value.data, MIN(sizeof(*psid), cache_value.length));
- SMB_ASSERT(cache_value.length >= offsetof(struct dom_sid, id_auth));
- SMB_ASSERT(cache_value.length == ndr_size_dom_sid(psid, NULL, 0));
-
- return true;
-}
-
-/*****************************************************************
- Find a gid given a SID.
-*****************************************************************/
-
-static bool fetch_gid_from_cache(gid_t *pgid, const DOM_SID *psid)
-{
- DATA_BLOB cache_value;
-
- if (!memcache_lookup(NULL, SID_UID_CACHE,
- data_blob_const(psid, ndr_size_dom_sid(psid, NULL, 0)),
- &cache_value)) {
- return false;
- }
-
- SMB_ASSERT(cache_value.length == sizeof(*pgid));
- memcpy(pgid, cache_value.data, sizeof(*pgid));
-
- return true;
-}
-
-/*****************************************************************
- Store gid to SID mapping in cache.
-*****************************************************************/
-
-void store_gid_sid_cache(const DOM_SID *psid, gid_t gid)
-{
- memcache_add(NULL, SID_GID_CACHE,
- data_blob_const(psid, ndr_size_dom_sid(psid, NULL, 0)),
- data_blob_const(&gid, sizeof(gid)));
- memcache_add(NULL, GID_SID_CACHE,
- data_blob_const(&gid, sizeof(gid)),
- data_blob_const(psid, ndr_size_dom_sid(psid, NULL, 0)));
-}
/*****************************************************************
*THE LEGACY* convert uid_t to SID function.
*****************************************************************/
-static void legacy_uid_to_sid(DOM_SID *psid, uid_t uid)
+static void legacy_uid_to_sid(struct dom_sid *psid, uid_t uid)
{
- uint32 rid;
bool ret;
ZERO_STRUCTP(psid);
become_root();
- ret = pdb_uid_to_rid(uid, &rid);
+ ret = pdb_uid_to_sid(uid, psid);
unbecome_root();
if (ret) {
/* This is a mapped user */
- sid_copy(psid, get_global_sam_sid());
- sid_append_rid(psid, rid);
goto done;
}
DEBUG(10,("LEGACY: uid %u -> sid %s\n", (unsigned int)uid,
sid_string_dbg(psid)));
- store_uid_sid_cache(psid, uid);
return;
}
*THE LEGACY* convert gid_t to SID function.
*****************************************************************/
-static void legacy_gid_to_sid(DOM_SID *psid, gid_t gid)
+static void legacy_gid_to_sid(struct dom_sid *psid, gid_t gid)
{
bool ret;
/* This is a mapped group */
goto done;
}
-
+
/* This is an unmapped group */
gid_to_unix_groups_sid(gid, psid);
DEBUG(10,("LEGACY: gid %u -> sid %s\n", (unsigned int)gid,
sid_string_dbg(psid)));
- store_gid_sid_cache(psid, gid);
return;
}
/*****************************************************************
- *THE LEGACY* convert SID to uid function.
+ *THE LEGACY* convert SID to id function.
*****************************************************************/
-static bool legacy_sid_to_uid(const DOM_SID *psid, uid_t *puid)
+static bool legacy_sid_to_unixid(const struct dom_sid *psid, struct unixid *id)
{
- enum lsa_SidType type;
- uint32 rid;
-
- if (sid_peek_check_rid(get_global_sam_sid(), psid, &rid)) {
- union unid_t id;
+ GROUP_MAP *map;
+ if (sid_check_is_in_our_sam(psid)) {
bool ret;
become_root();
- ret = pdb_sid_to_id(psid, &id, &type);
+ ret = pdb_sid_to_id(psid, id);
unbecome_root();
if (ret) {
- if (type != SID_NAME_USER) {
- DEBUG(5, ("sid %s is a %s, expected a user\n",
- sid_string_dbg(psid),
- sid_type_lookup(type)));
- return false;
- }
- *puid = id.uid;
goto done;
}
/* This was ours, but it was not mapped. Fail */
}
- DEBUG(10,("LEGACY: mapping failed for sid %s\n",
- sid_string_dbg(psid)));
- return false;
-
-done:
- DEBUG(10,("LEGACY: sid %s -> uid %u\n", sid_string_dbg(psid),
- (unsigned int)*puid ));
-
- store_uid_sid_cache(psid, *puid);
- return true;
-}
-
-/*****************************************************************
- *THE LEGACY* convert SID to gid function.
- Group mapping is used for gids that maps to Wellknown SIDs
-*****************************************************************/
-
-static bool legacy_sid_to_gid(const DOM_SID *psid, gid_t *pgid)
-{
- uint32 rid;
- GROUP_MAP map;
- union unid_t id;
- enum lsa_SidType type;
-
if ((sid_check_is_in_builtin(psid) ||
sid_check_is_in_wellknown_domain(psid))) {
bool ret;
+ map = talloc_zero(NULL, GROUP_MAP);
+ if (!map) {
+ return false;
+ }
+
become_root();
- ret = pdb_getgrsid(&map, *psid);
+ ret = pdb_getgrsid(map, *psid);
unbecome_root();
if (ret) {
- *pgid = map.gid;
+ id->id = map->gid;
+ id->type = ID_TYPE_GID;
+ TALLOC_FREE(map);
goto done;
}
+ TALLOC_FREE(map);
DEBUG(10,("LEGACY: mapping failed for sid %s\n",
sid_string_dbg(psid)));
return false;
}
- if (sid_peek_check_rid(get_global_sam_sid(), psid, &rid)) {
- bool ret;
-
- become_root();
- ret = pdb_sid_to_id(psid, &id, &type);
- unbecome_root();
-
- if (ret) {
- if ((type != SID_NAME_DOM_GRP) &&
- (type != SID_NAME_ALIAS)) {
- DEBUG(5, ("LEGACY: sid %s is a %s, expected "
- "a group\n", sid_string_dbg(psid),
- sid_type_lookup(type)));
- return false;
- }
- *pgid = id.gid;
- goto done;
- }
-
- /* This was ours, but it was not mapped. Fail */
- }
-
DEBUG(10,("LEGACY: mapping failed for sid %s\n",
sid_string_dbg(psid)));
return false;
-
- done:
- DEBUG(10,("LEGACY: sid %s -> gid %u\n", sid_string_dbg(psid),
- (unsigned int)*pgid ));
-
- store_gid_sid_cache(psid, *pgid);
+done:
return true;
}
+static bool legacy_sid_to_gid(const struct dom_sid *psid, gid_t *pgid)
+{
+ struct unixid id;
+ if (!legacy_sid_to_unixid(psid, &id)) {
+ return false;
+ }
+ if (id.type == ID_TYPE_GID || id.type == ID_TYPE_BOTH) {
+ *pgid = id.id;
+ return true;
+ }
+ return false;
+}
+
+static bool legacy_sid_to_uid(const struct dom_sid *psid, uid_t *puid)
+{
+ struct unixid id;
+ if (!legacy_sid_to_unixid(psid, &id)) {
+ return false;
+ }
+ if (id.type == ID_TYPE_UID || id.type == ID_TYPE_BOTH) {
+ *puid = id.id;
+ return true;
+ }
+ return false;
+}
+
/*****************************************************************
*THE CANONICAL* convert uid_t to SID function.
*****************************************************************/
-void uid_to_sid(DOM_SID *psid, uid_t uid)
+void uid_to_sid(struct dom_sid *psid, uid_t uid)
{
bool expired = true;
bool ret;
ZERO_STRUCTP(psid);
- if (fetch_sid_from_uid_cache(psid, uid))
- return;
-
/* Check the winbindd cache directly. */
ret = idmap_cache_find_uid2sid(uid, psid, &expired);
* the next time we ask.
*/
DEBUG(5, ("uid_to_sid: winbind failed to find a sid "
- "for uid %u\n", uid));
+ "for uid %u\n", (unsigned int)uid));
legacy_uid_to_sid(psid, uid);
return;
DEBUG(10,("uid %u -> sid %s\n", (unsigned int)uid,
sid_string_dbg(psid)));
- store_uid_sid_cache(psid, uid);
return;
}
*THE CANONICAL* convert gid_t to SID function.
*****************************************************************/
-void gid_to_sid(DOM_SID *psid, gid_t gid)
+void gid_to_sid(struct dom_sid *psid, gid_t gid)
{
bool expired = true;
bool ret;
ZERO_STRUCTP(psid);
- if (fetch_sid_from_gid_cache(psid, gid))
- return;
-
/* Check the winbindd cache directly. */
ret = idmap_cache_find_gid2sid(gid, psid, &expired);
* the next time we ask.
*/
DEBUG(5, ("gid_to_sid: winbind failed to find a sid "
- "for gid %u\n", gid));
+ "for gid %u\n", (unsigned int)gid));
legacy_gid_to_sid(psid, gid);
return;
DEBUG(10,("gid %u -> sid %s\n", (unsigned int)gid,
sid_string_dbg(psid)));
- store_gid_sid_cache(psid, gid);
return;
}
+bool sids_to_unixids(const struct dom_sid *sids, uint32_t num_sids,
+ struct unixid *ids)
+{
+ struct wbcDomainSid *wbc_sids = NULL;
+ struct wbcUnixId *wbc_ids = NULL;
+ uint32_t i, num_not_cached;
+ wbcErr err;
+ bool ret = false;
+
+ wbc_sids = talloc_array(talloc_tos(), struct wbcDomainSid, num_sids);
+ if (wbc_sids == NULL) {
+ return false;
+ }
+
+ num_not_cached = 0;
+
+ for (i=0; i<num_sids; i++) {
+ bool expired;
+ uint32_t rid;
+
+ if (sid_peek_check_rid(&global_sid_Unix_Users,
+ &sids[i], &rid)) {
+ ids[i].type = ID_TYPE_UID;
+ ids[i].id = rid;
+ continue;
+ }
+ if (sid_peek_check_rid(&global_sid_Unix_Groups,
+ &sids[i], &rid)) {
+ ids[i].type = ID_TYPE_GID;
+ ids[i].id = rid;
+ continue;
+ }
+ if (idmap_cache_find_sid2unixid(&sids[i], &ids[i], &expired)
+ && !expired)
+ {
+ continue;
+ }
+ ids[i].type = ID_TYPE_NOT_SPECIFIED;
+ memcpy(&wbc_sids[num_not_cached], &sids[i],
+ ndr_size_dom_sid(&sids[i], 0));
+ num_not_cached += 1;
+ }
+ if (num_not_cached == 0) {
+ goto done;
+ }
+ wbc_ids = talloc_array(talloc_tos(), struct wbcUnixId, num_not_cached);
+ if (wbc_ids == NULL) {
+ goto fail;
+ }
+ for (i=0; i<num_not_cached; i++) {
+ wbc_ids[i].type = WBC_ID_TYPE_NOT_SPECIFIED;
+ }
+ err = wbcSidsToUnixIds(wbc_sids, num_not_cached, wbc_ids);
+ if (!WBC_ERROR_IS_OK(err)) {
+ DEBUG(10, ("wbcSidsToUnixIds returned %s\n",
+ wbcErrorString(err)));
+ }
+
+ num_not_cached = 0;
+
+ for (i=0; i<num_sids; i++) {
+ if (ids[i].type == ID_TYPE_NOT_SPECIFIED) {
+ switch (wbc_ids[num_not_cached].type) {
+ case ID_TYPE_UID:
+ ids[i].type = WBC_ID_TYPE_UID;
+ ids[i].id = wbc_ids[num_not_cached].id.uid;
+ break;
+ case ID_TYPE_GID:
+ ids[i].type = WBC_ID_TYPE_GID;
+ ids[i].id = wbc_ids[num_not_cached].id.gid;
+ break;
+ default:
+ /* The types match, and wbcUnixId -> id is a union anyway */
+ ids[i].type = wbc_ids[num_not_cached].type;
+ ids[i].id = wbc_ids[num_not_cached].id.gid;
+ break;
+ }
+ num_not_cached += 1;
+ }
+ }
+
+ for (i=0; i<num_sids; i++) {
+ if (ids[i].type != ID_TYPE_NOT_SPECIFIED) {
+ continue;
+ }
+ if (legacy_sid_to_gid(&sids[i], &ids[i].id)) {
+ ids[i].type = ID_TYPE_GID;
+ continue;
+ }
+ if (legacy_sid_to_uid(&sids[i], &ids[i].id)) {
+ ids[i].type = ID_TYPE_UID;
+ continue;
+ }
+ }
+done:
+ for (i=0; i<num_sids; i++) {
+ switch(ids[i].type) {
+ case WBC_ID_TYPE_GID:
+ case WBC_ID_TYPE_UID:
+ case WBC_ID_TYPE_BOTH:
+ if (ids[i].id == -1) {
+ ids[i].type = ID_TYPE_NOT_SPECIFIED;
+ }
+ break;
+ case WBC_ID_TYPE_NOT_SPECIFIED:
+ break;
+ }
+ }
+
+ ret = true;
+fail:
+ TALLOC_FREE(wbc_ids);
+ TALLOC_FREE(wbc_sids);
+ return ret;
+}
+
/*****************************************************************
*THE CANONICAL* convert SID to uid function.
*****************************************************************/
-bool sid_to_uid(const DOM_SID *psid, uid_t *puid)
+bool sid_to_uid(const struct dom_sid *psid, uid_t *puid)
{
bool expired = true;
bool ret;
uint32 rid;
- gid_t gid;
-
- if (fetch_uid_from_cache(puid, psid))
- return true;
-
- if (fetch_gid_from_cache(&gid, psid)) {
- return false;
- }
/* Optimize for the Unix Users Domain
* as the conversion is straightforward */
if (!ret || expired) {
/* Not in cache. Ask winbindd. */
if (!winbind_sid_to_uid(puid, psid)) {
- if (!winbind_ping()) {
- return legacy_sid_to_uid(psid, puid);
- }
-
DEBUG(5, ("winbind failed to find a uid for sid %s\n",
sid_string_dbg(psid)));
- return false;
+ /* winbind failed. do legacy */
+ return legacy_sid_to_uid(psid, puid);
}
}
DEBUG(10,("sid %s -> uid %u\n", sid_string_dbg(psid),
(unsigned int)*puid ));
- store_uid_sid_cache(psid, *puid);
return true;
}
Group mapping is used for gids that maps to Wellknown SIDs
*****************************************************************/
-bool sid_to_gid(const DOM_SID *psid, gid_t *pgid)
+bool sid_to_gid(const struct dom_sid *psid, gid_t *pgid)
{
bool expired = true;
bool ret;
uint32 rid;
- uid_t uid;
-
- if (fetch_gid_from_cache(pgid, psid))
- return true;
-
- if (fetch_uid_from_cache(&uid, psid))
- return false;
/* Optimize for the Unix Groups Domain
* as the conversion is straightforward */
* (Idmap will check it is a valid SID and of the right type) */
if ( !winbind_sid_to_gid(pgid, psid) ) {
- if (!winbind_ping()) {
- return legacy_sid_to_gid(psid, pgid);
- }
DEBUG(10,("winbind failed to find a gid for sid %s\n",
sid_string_dbg(psid)));
- return false;
+ /* winbind failed. do legacy */
+ return legacy_sid_to_gid(psid, pgid);
}
}
DEBUG(10,("sid %s -> gid %u\n", sid_string_dbg(psid),
(unsigned int)*pgid ));
- store_gid_sid_cache(psid, *pgid);
return true;
}
+
+/**
+ * @brief This function gets the primary group SID mapping the primary
+ * GID of the user as obtained by an actual getpwnam() call.
+ * This is necessary to avoid issues with arbitrary group SIDs
+ * stored in passdb. We try as hard as we can to get the SID
+ * corresponding to the GID, including trying group mapping.
+ * If nothing else works, we will force "Domain Users" as the
+ * primary group.
+ * This is needed because we must always be able to lookup the
+ * primary group SID, so we cannot settle for an arbitrary SID.
+ *
+ * This call can be expensive. Use with moderation.
+ * If you have a "samu" struct around use pdb_get_group_sid()
+ * instead as it does properly cache results.
+ *
+ * @param mem_ctx[in] The memory context iused to allocate the result.
+ * @param username[in] The user's name
+ * @param _pwd[in|out] If available, pass in user's passwd struct.
+ * It will contain a tallocated passwd if NULL was
+ * passed in.
+ * @param _group_sid[out] The user's Primary Group SID
+ *
+ * @return NTSTATUS error code.
+ */
+NTSTATUS get_primary_group_sid(TALLOC_CTX *mem_ctx,
+ const char *username,
+ struct passwd **_pwd,
+ struct dom_sid **_group_sid)
+{
+ TALLOC_CTX *tmp_ctx;
+ bool need_lookup_sid = false;
+ struct dom_sid *group_sid;
+ struct passwd *pwd = *_pwd;
+
+ tmp_ctx = talloc_new(mem_ctx);
+ if (!tmp_ctx) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ if (!pwd) {
+ pwd = Get_Pwnam_alloc(mem_ctx, username);
+ if (!pwd) {
+ DEBUG(0, ("Failed to find a Unix account for %s",
+ username));
+ TALLOC_FREE(tmp_ctx);
+ return NT_STATUS_NO_SUCH_USER;
+ }
+ }
+
+ group_sid = talloc_zero(mem_ctx, struct dom_sid);
+ if (!group_sid) {
+ TALLOC_FREE(tmp_ctx);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ gid_to_sid(group_sid, pwd->pw_gid);
+ if (!is_null_sid(group_sid)) {
+ struct dom_sid domain_sid;
+ uint32_t rid;
+
+ /* We need a sid within our domain */
+ sid_copy(&domain_sid, group_sid);
+ sid_split_rid(&domain_sid, &rid);
+ if (dom_sid_equal(&domain_sid, get_global_sam_sid())) {
+ /*
+ * As shortcut for the expensive lookup_sid call
+ * compare the domain sid part
+ */
+ switch (rid) {
+ case DOMAIN_RID_ADMINS:
+ case DOMAIN_RID_USERS:
+ goto done;
+ default:
+ need_lookup_sid = true;
+ break;
+ }
+ } else {
+ /* Try group mapping */
+ ZERO_STRUCTP(group_sid);
+ if (pdb_gid_to_sid(pwd->pw_gid, group_sid)) {
+ need_lookup_sid = true;
+ }
+ }
+ }
+
+ /* We must verify that this is a valid SID that resolves to a
+ * group of the correct type */
+ if (need_lookup_sid) {
+ enum lsa_SidType type = SID_NAME_UNKNOWN;
+ bool lookup_ret;
+
+ DEBUG(10, ("do lookup_sid(%s) for group of user %s\n",
+ sid_string_dbg(group_sid), username));
+
+ /* Now check that it's actually a domain group and
+ * not something else */
+ lookup_ret = lookup_sid(tmp_ctx, group_sid,
+ NULL, NULL, &type);
+
+ if (lookup_ret && (type == SID_NAME_DOM_GRP)) {
+ goto done;
+ }
+
+ DEBUG(3, ("Primary group %s for user %s is"
+ " a %s and not a domain group\n",
+ sid_string_dbg(group_sid), username,
+ sid_type_lookup(type)));
+ }
+
+ /* Everything else, failed.
+ * Just set it to the 'Domain Users' RID of 513 which will
+ always resolve to a name */
+ DEBUG(3, ("Forcing Primary Group to 'Domain Users' for %s\n",
+ username));
+
+ sid_compose(group_sid, get_global_sam_sid(), DOMAIN_RID_USERS);
+
+done:
+ *_pwd = talloc_move(mem_ctx, &pwd);
+ *_group_sid = talloc_move(mem_ctx, &group_sid);
+ TALLOC_FREE(tmp_ctx);
+ return NT_STATUS_OK;
+}
+
git.samba.org / kai / samba.git / blobdiff