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/*
SSSD
LDAP Identity Backend Module - Netgroup support
Authors:
Sumit Bose <sbose@redhat.com>
Copyright (C) 2010 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 <errno.h>
#include "util/util.h"
#include "db/sysdb.h"
#include "providers/ldap/ldap_common.h"
#include "providers/ldap/sdap_async.h"
struct ldap_netgroup_get_state {
struct tevent_context *ev;
struct sdap_id_ctx *ctx;
struct sdap_id_op *op;
struct sysdb_ctx *sysdb;
struct sss_domain_info *domain;
const char *name;
int timeout;
char *filter;
const char **attrs;
size_t count;
struct sysdb_attrs **netgroups;
int dp_error;
};
static int ldap_netgroup_get_retry(struct tevent_req *req);
static void ldap_netgroup_get_connect_done(struct tevent_req *subreq);
static void ldap_netgroup_get_done(struct tevent_req *subreq);
struct tevent_req *ldap_netgroup_get_send(TALLOC_CTX *memctx,
struct tevent_context *ev,
struct sdap_id_ctx *ctx,
const char *name)
{
struct tevent_req *req;
struct ldap_netgroup_get_state *state;
char *clean_name;
int ret;
req = tevent_req_create(memctx, &state, struct ldap_netgroup_get_state);
if (!req) return NULL;
state->ev = ev;
state->ctx = ctx;
state->dp_error = DP_ERR_FATAL;
state->op = sdap_id_op_create(state, state->ctx->conn_cache);
if (!state->op) {
DEBUG(2, ("sdap_id_op_create failed\n"));
ret = ENOMEM;
goto fail;
}
state->sysdb = ctx->be->sysdb;
state->domain = state->ctx->be->domain;
state->name = name;
state->timeout = dp_opt_get_int(ctx->opts->basic, SDAP_SEARCH_TIMEOUT);
ret = sss_filter_sanitize(state, name, &clean_name);
if (ret != EOK) {
goto fail;
}
state->filter = talloc_asprintf(state, "(&(%s=%s)(objectclass=%s))",
ctx->opts->netgroup_map[SDAP_AT_NETGROUP_NAME].name,
clean_name,
ctx->opts->netgroup_map[SDAP_OC_NETGROUP].name);
if (!state->filter) {
DEBUG(2, ("Failed to build filter\n"));
ret = ENOMEM;
goto fail;
}
talloc_zfree(clean_name);
ret = build_attrs_from_map(state, ctx->opts->netgroup_map,
SDAP_OPTS_NETGROUP, &state->attrs);
if (ret != EOK) goto fail;
ret = ldap_netgroup_get_retry(req);
if (ret != EOK) {
goto fail;
}
return req;
fail:
tevent_req_error(req, ret);
tevent_req_post(req, ev);
return req;
}
static int ldap_netgroup_get_retry(struct tevent_req *req)
{
struct ldap_netgroup_get_state *state = tevent_req_data(req,
struct ldap_netgroup_get_state);
struct tevent_req *subreq;
int ret = EOK;
subreq = sdap_id_op_connect_send(state->op, state, &ret);
if (!subreq) {
return ret;
}
tevent_req_set_callback(subreq, ldap_netgroup_get_connect_done, req);
return EOK;
}
static void ldap_netgroup_get_connect_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(subreq,
struct tevent_req);
struct ldap_netgroup_get_state *state = tevent_req_data(req,
struct ldap_netgroup_get_state);
int dp_error = DP_ERR_FATAL;
int ret;
ret = sdap_id_op_connect_recv(subreq, &dp_error);
talloc_zfree(subreq);
if (ret != EOK) {
state->dp_error = dp_error;
tevent_req_error(req, ret);
return;
}
subreq = sdap_get_netgroups_send(state, state->ev,
state->domain, state->sysdb,
state->ctx->opts,
state->ctx->opts->netgroup_search_bases,
sdap_id_op_handle(state->op),
state->attrs, state->filter,
state->timeout);
if (!subreq) {
tevent_req_error(req, ENOMEM);
return;
}
tevent_req_set_callback(subreq, ldap_netgroup_get_done, req);
return;
}
static void ldap_netgroup_get_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(subreq,
struct tevent_req);
struct ldap_netgroup_get_state *state = tevent_req_data(req,
struct ldap_netgroup_get_state);
int dp_error = DP_ERR_FATAL;
int ret;
ret = sdap_get_netgroups_recv(subreq, state, NULL, &state->count,
&state->netgroups);
talloc_zfree(subreq);
ret = sdap_id_op_done(state->op, ret, &dp_error);
if (dp_error == DP_ERR_OK && ret != EOK) {
/* retry */
ret = ldap_netgroup_get_retry(req);
if (ret != EOK) {
tevent_req_error(req, ret);
return;
}
return;
}
if (ret && ret != ENOENT) {
state->dp_error = dp_error;
tevent_req_error(req, ret);
return;
}
if (ret == EOK && state->count > 1) {
DEBUG(1, ("Found more than one netgroup with the name [%s].\n",
state->name));
tevent_req_error(req, EINVAL);
return;
}
if (ret == ENOENT) {
ret = sysdb_delete_netgroup(state->sysdb, state->name);
if (ret != EOK && ret != ENOENT) {
tevent_req_error(req, ret);
return;
}
}
state->dp_error = DP_ERR_OK;
tevent_req_done(req);
return;
}
int ldap_netgroup_get_recv(struct tevent_req *req, int *dp_error_out)
{
struct ldap_netgroup_get_state *state = tevent_req_data(req,
struct ldap_netgroup_get_state);
if (dp_error_out) {
*dp_error_out = state->dp_error;
}
TEVENT_REQ_RETURN_ON_ERROR(req);
return EOK;
}
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