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/*
Authors:
Pavel Březina <pbrezina@redhat.com>
Copyright (C) 2016 Red Hat
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 <talloc.h>
#include <ldb.h>
#include "db/sysdb.h"
#include "util/util.h"
#include "providers/data_provider.h"
#include "responder/common/cache_req/cache_req_plugin.h"
static const char *
cache_req_user_by_id_create_debug_name(TALLOC_CTX *mem_ctx,
struct cache_req_data *data,
struct sss_domain_info *domain)
{
return talloc_asprintf(mem_ctx, "UID:%d@%s", data->id, domain->name);
}
static errno_t
cache_req_user_by_id_ncache_check(struct sss_nc_ctx *ncache,
struct sss_domain_info *domain,
struct cache_req_data *data)
{
return sss_ncache_check_uid(ncache, NULL, data->id);
}
static errno_t
cache_req_user_by_id_global_ncache_add(struct sss_nc_ctx *ncache,
struct cache_req_data *data)
{
return sss_ncache_set_uid(ncache, false, NULL, data->id);
}
static errno_t
cache_req_user_by_id_lookup(TALLOC_CTX *mem_ctx,
struct cache_req *cr,
struct cache_req_data *data,
struct sss_domain_info *domain,
struct ldb_result **_result)
{
return sysdb_getpwuid_with_views(mem_ctx, domain, data->id, _result);
}
static errno_t
cache_req_user_by_id_dpreq_params(TALLOC_CTX *mem_ctx,
struct cache_req *cr,
struct ldb_result *result,
const char **_string,
uint32_t *_id,
const char **_flag)
{
uint32_t id;
*_id = cr->data->id;
*_string = NULL;
*_flag = NULL;
if (!DOM_HAS_VIEWS(cr->domain)) {
return EOK;
}
/* We must search with views. */
if (result == NULL || result->count == 0) {
*_flag = EXTRA_INPUT_MAYBE_WITH_VIEW;
return EOK;
}
/* If domain has views we will try to use original values instead of the
* overridden ones. This is a must for the LOCAL view since we can't look
* it up otherwise. But it is also a shortcut for non-local views where
* we will not fail over to the overridden value. */
id = ldb_msg_find_attr_as_uint64(result->msgs[0], SYSDB_UIDNUM, 0);
if (id == 0) {
DEBUG(SSSDBG_CRIT_FAILURE, "Bug: id cannot be 0\n");
*_flag = EXTRA_INPUT_MAYBE_WITH_VIEW;
return EOK;
}
/* Now we have the original name and id. We don't have to search with
* views unless some error occurred. */
*_id = id;
return EOK;
}
static struct tevent_req *
cache_req_user_by_id_dp_send(TALLOC_CTX *mem_ctx,
struct cache_req *cr,
struct cache_req_data *data,
struct sss_domain_info *domain,
struct ldb_result *result)
{
const char *string;
const char *flag;
uint32_t id;
errno_t ret;
ret = cache_req_user_by_id_dpreq_params(mem_ctx, cr, result,
&string, &id, &flag);
if (ret != EOK) {
return NULL;
}
return sss_dp_get_account_send(mem_ctx, cr->rctx, domain, true,
SSS_DP_USER, string, id, flag);
}
const struct cache_req_plugin cache_req_user_by_id = {
.name = "User by ID",
.attr_expiration = SYSDB_CACHE_EXPIRE,
.parse_name = false,
.ignore_default_domain = false,
.bypass_cache = false,
.only_one_result = true,
.search_all_domains = false,
.require_enumeration = false,
.allow_missing_fqn = true,
.allow_switch_to_upn = false,
.upn_equivalent = CACHE_REQ_SENTINEL,
.get_next_domain_flags = SSS_GND_DESCEND,
.is_well_known_fn = NULL,
.prepare_domain_data_fn = NULL,
.create_debug_name_fn = cache_req_user_by_id_create_debug_name,
.global_ncache_add_fn = cache_req_user_by_id_global_ncache_add,
.ncache_check_fn = cache_req_user_by_id_ncache_check,
.ncache_add_fn = NULL,
.lookup_fn = cache_req_user_by_id_lookup,
.dp_send_fn = cache_req_user_by_id_dp_send,
.dp_recv_fn = cache_req_common_dp_recv
};
struct tevent_req *
cache_req_user_by_id_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct resp_ctx *rctx,
struct sss_nc_ctx *ncache,
int cache_refresh_percent,
const char *domain,
uid_t uid)
{
struct cache_req_data *data;
data = cache_req_data_id(mem_ctx, CACHE_REQ_USER_BY_ID, uid);
if (data == NULL) {
return NULL;
}
return cache_req_steal_data_and_send(mem_ctx, ev, rctx, ncache,
cache_refresh_percent, domain, data);
}
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