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/*
Unix SMB/CIFS implementation.
interface functions for the sam database
Copyright (C) Andrew Tridgell 2004
Copyright (C) Volker Lendecke 2004
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2006
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 "librpc/gen_ndr/ndr_netlogon.h"
#include "librpc/gen_ndr/ndr_misc.h"
#include "librpc/gen_ndr/ndr_security.h"
#include "lib/ldb/include/ldb.h"
#include "lib/ldb/include/ldb_errors.h"
#include "libcli/security/security.h"
#include "libcli/auth/libcli_auth.h"
#include "libcli/ldap/ldap_ndr.h"
#include "system/time.h"
#include "system/filesys.h"
#include "ldb_wrap.h"
#include "util/util_ldb.h"
#include "dsdb/samdb/samdb.h"
#include "dsdb/common/flags.h"
#include "param/param.h"
char *samdb_relative_path(struct ldb_context *ldb,
TALLOC_CTX *mem_ctx,
const char *name)
{
const char *base_url =
(const char *)ldb_get_opaque(ldb, "ldb_url");
char *path, *p, *full_name;
if (name == NULL) {
return NULL;
}
if (name[0] == 0 || name[0] == '/' || strstr(name, ":/")) {
return talloc_strdup(mem_ctx, name);
}
path = talloc_strdup(mem_ctx, base_url);
if (path == NULL) {
return NULL;
}
if ( (p = strrchr(path, '/')) != NULL) {
p[0] = '\0';
full_name = talloc_asprintf(mem_ctx, "%s/%s", path, name);
} else {
full_name = talloc_asprintf(mem_ctx, "./%s", name);
}
talloc_free(path);
return full_name;
}
/*
connect to the SAM database
return an opaque context pointer on success, or NULL on failure
*/
struct ldb_context *samdb_connect(TALLOC_CTX *mem_ctx,
struct loadparm_context *lp_ctx,
struct auth_session_info *session_info)
{
struct ldb_context *ldb;
ldb = ldb_wrap_connect(mem_ctx, lp_ctx,
lp_sam_url(lp_ctx), session_info,
NULL, 0, NULL);
if (!ldb) {
return NULL;
}
dsdb_make_schema_global(ldb);
return ldb;
}
/*
copy from a template record to a message
*/
int samdb_copy_template(struct ldb_context *ldb,
struct ldb_message *msg, const char *name,
const char **errstring)
{
struct ldb_result *res;
struct ldb_message *t;
int ret, i, j;
struct ldb_context *templates_ldb;
char *templates_ldb_path;
struct ldb_dn *basedn;
templates_ldb = talloc_get_type(ldb_get_opaque(ldb, "templates_ldb"), struct ldb_context);
if (!templates_ldb) {
templates_ldb_path = samdb_relative_path(ldb,
msg,
"templates.ldb");
if (!templates_ldb_path) {
*errstring = talloc_asprintf(msg, "samdb_copy_template: ERROR: Failed to contruct path for template db");
return LDB_ERR_OPERATIONS_ERROR;
}
templates_ldb = ldb_wrap_connect(ldb, (struct loadparm_context *)ldb_get_opaque(ldb, "loadparm"),
templates_ldb_path, NULL,
NULL, 0, NULL);
talloc_free(templates_ldb_path);
if (!templates_ldb) {
return LDB_ERR_OPERATIONS_ERROR;
}
ret = ldb_set_opaque(ldb, "templates_ldb", templates_ldb);
if (ret != LDB_SUCCESS) {
return ret;
}
}
*errstring = NULL;
basedn = ldb_dn_new(templates_ldb, ldb, "cn=Templates");
if (!ldb_dn_add_child_fmt(basedn, "CN=Template%s", name)) {
talloc_free(basedn);
*errstring = talloc_asprintf(msg, "samdb_copy_template: ERROR: Failed to contruct DN for template '%s'",
name);
return LDB_ERR_OPERATIONS_ERROR;
}
/* pull the template record */
ret = ldb_search(templates_ldb, basedn, LDB_SCOPE_BASE, "(dn=*)", NULL, &res);
talloc_free(basedn);
if (ret != LDB_SUCCESS) {
*errstring = talloc_steal(msg, ldb_errstring(templates_ldb));
return ret;
}
if (res->count != 1) {
*errstring = talloc_asprintf(msg, "samdb_copy_template: ERROR: template '%s' matched %d records, expected 1",
name,
res->count);
talloc_free(res);
return LDB_ERR_OPERATIONS_ERROR;
}
t = res->msgs[0];
for (i = 0; i < t->num_elements; i++) {
struct ldb_message_element *el = &t->elements[i];
/* some elements should not be copied from the template */
if (ldb_attr_cmp(el->name, "cn") == 0 ||
ldb_attr_cmp(el->name, "name") == 0 ||
ldb_attr_cmp(el->name, "objectClass") == 0 ||
ldb_attr_cmp(el->name, "sAMAccountName") == 0 ||
ldb_attr_cmp(el->name, "sAMAccountName") == 0 ||
ldb_attr_cmp(el->name, "distinguishedName") == 0 ||
ldb_attr_cmp(el->name, "objectGUID") == 0) {
continue;
}
for (j = 0; j < el->num_values; j++) {
ret = samdb_find_or_add_attribute(ldb, msg, el->name,
(char *)el->values[j].data);
if (ret) {
*errstring = talloc_asprintf(msg, "Adding attribute %s failed.", el->name);
talloc_free(res);
return ret;
}
}
}
talloc_free(res);
return LDB_SUCCESS;
}
/****************************************************************************
Create the SID list for this user.
****************************************************************************/
NTSTATUS security_token_create(TALLOC_CTX *mem_ctx,
struct loadparm_context *lp_ctx,
struct dom_sid *user_sid,
struct dom_sid *group_sid,
int n_groupSIDs,
struct dom_sid **groupSIDs,
bool is_authenticated,
struct security_token **token)
{
struct security_token *ptoken;
int i;
NTSTATUS status;
ptoken = security_token_initialise(mem_ctx);
NT_STATUS_HAVE_NO_MEMORY(ptoken);
ptoken->sids = talloc_array(ptoken, struct dom_sid *, n_groupSIDs + 5);
NT_STATUS_HAVE_NO_MEMORY(ptoken->sids);
ptoken->user_sid = talloc_reference(ptoken, user_sid);
ptoken->group_sid = talloc_reference(ptoken, group_sid);
ptoken->privilege_mask = 0;
ptoken->sids[0] = ptoken->user_sid;
ptoken->sids[1] = ptoken->group_sid;
/*
* Finally add the "standard" SIDs.
* The only difference between guest and "anonymous"
* is the addition of Authenticated_Users.
*/
ptoken->sids[2] = dom_sid_parse_talloc(ptoken->sids, SID_WORLD);
NT_STATUS_HAVE_NO_MEMORY(ptoken->sids[2]);
ptoken->sids[3] = dom_sid_parse_talloc(ptoken->sids, SID_NT_NETWORK);
NT_STATUS_HAVE_NO_MEMORY(ptoken->sids[3]);
ptoken->num_sids = 4;
if (is_authenticated) {
ptoken->sids[4] = dom_sid_parse_talloc(ptoken->sids, SID_NT_AUTHENTICATED_USERS);
NT_STATUS_HAVE_NO_MEMORY(ptoken->sids[4]);
ptoken->num_sids++;
}
for (i = 0; i < n_groupSIDs; i++) {
size_t check_sid_idx;
for (check_sid_idx = 1;
check_sid_idx < ptoken->num_sids;
check_sid_idx++) {
if (dom_sid_equal(ptoken->sids[check_sid_idx], groupSIDs[i])) {
break;
}
}
if (check_sid_idx == ptoken->num_sids) {
ptoken->sids[ptoken->num_sids++] = talloc_reference(ptoken->sids, groupSIDs[i]);
}
}
/* setup the privilege mask for this token */
status = samdb_privilege_setup(lp_ctx, ptoken);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(ptoken);
return status;
}
security_token_debug(10, ptoken);
*token = ptoken;
return NT_STATUS_OK;
}
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