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/*
Authors:
Pavel Březina <pbrezina@redhat.com>
Copyright (C) 2015 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 <tevent.h>
#include "util/util.h"
#include "providers/ldap/sdap.h"
#include "providers/ldap/sdap_async.h"
#include "providers/ldap/ldap_common.h"
struct sdap_search_bases_state {
struct tevent_context *ev;
struct sdap_options *opts;
struct sdap_handle *sh;
const char *filter;
const char **attrs;
struct sdap_attr_map *map;
int map_num_attrs;
int timeout;
bool allow_paging;
size_t base_iter;
struct sdap_search_base *cur_base;
struct sdap_search_base **bases;
size_t reply_count;
struct sysdb_attrs **reply;
};
static errno_t sdap_search_bases_next_base(struct tevent_req *req);
static void sdap_search_bases_done(struct tevent_req *subreq);
struct tevent_req *sdap_search_bases_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct sdap_options *opts,
struct sdap_handle *sh,
struct sdap_search_base **bases,
struct sdap_attr_map *map,
bool allow_paging,
int timeout,
const char *filter,
const char **attrs)
{
struct tevent_req *req;
struct sdap_search_bases_state *state;
errno_t ret;
req = tevent_req_create(mem_ctx, &state, struct sdap_search_bases_state);
if (req == NULL) {
return NULL;
}
if (bases == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, "No search base specified!\n");
ret = ERR_INTERNAL;
goto immediately;
}
state->ev = ev;
state->opts = opts;
state->sh = sh;
state->bases = bases;
state->map = map;
state->filter = filter;
state->attrs = attrs;
state->allow_paging = allow_paging;
state->timeout = timeout == 0
? dp_opt_get_int(opts->basic, SDAP_SEARCH_TIMEOUT)
: timeout;
if (state->map != NULL) {
for (state->map_num_attrs = 0;
state->map[state->map_num_attrs].opt_name != NULL;
state->map_num_attrs++) {
/* no op */;
}
} else {
state->map_num_attrs = 0;
}
if (state->attrs == NULL) {
ret = build_attrs_from_map(state, state->map, state->map_num_attrs,
NULL, &state->attrs, NULL);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, "Unable to build attrs from map "
"[%d]: %s\n", ret, sss_strerror(ret));
goto immediately;
}
}
state->base_iter = 0;
ret = sdap_search_bases_next_base(req);
if (ret == EAGAIN) {
/* asynchronous processing */
return req;
}
immediately:
if (ret == EOK) {
tevent_req_done(req);
} else {
tevent_req_error(req, ret);
}
tevent_req_post(req, ev);
return req;
}
static errno_t sdap_search_bases_next_base(struct tevent_req *req)
{
struct sdap_search_bases_state *state;
struct tevent_req *subreq;
char *filter;
state = tevent_req_data(req, struct sdap_search_bases_state);
state->cur_base = state->bases[state->base_iter];
if (state->cur_base == NULL) {
return EOK;
}
/* Combine lookup and search base filters. */
filter = sdap_combine_filters(state, state->filter,
state->cur_base->filter);
if (filter == NULL) {
return ENOMEM;
}
DEBUG(SSSDBG_TRACE_FUNC, "Issuing LDAP lookup with base [%s]\n",
state->cur_base->basedn);
subreq = sdap_get_generic_send(state, state->ev, state->opts, state->sh,
state->cur_base->basedn,
state->cur_base->scope, filter,
state->attrs, state->map,
state->map_num_attrs, state->timeout,
state->allow_paging);
if (subreq == NULL) {
return ENOMEM;
}
tevent_req_set_callback(subreq, sdap_search_bases_done, req);
state->base_iter++;
return EAGAIN;
}
static void sdap_search_bases_done(struct tevent_req *subreq)
{
struct tevent_req *req;
struct sdap_search_bases_state *state;
struct sysdb_attrs **attrs;
size_t count;
size_t i;
int ret;
req = tevent_req_callback_data(subreq, struct tevent_req);
state = tevent_req_data(req, struct sdap_search_bases_state);
DEBUG(SSSDBG_TRACE_FUNC, "Receiving data from base [%s]\n",
state->cur_base->basedn);
ret = sdap_get_generic_recv(subreq, state, &count, &attrs);
talloc_zfree(subreq);
if (ret != EOK) {
tevent_req_error(req, ret);
return;
}
/* Add rules to result. */
if (count > 0) {
state->reply = talloc_realloc(state, state->reply, struct sysdb_attrs *,
state->reply_count + count);
if (state->reply == NULL) {
tevent_req_error(req, ENOMEM);
return;
}
for (i = 0; i < count; i++) {
state->reply[state->reply_count + i] = talloc_steal(state->reply,
attrs[i]);
}
state->reply_count += count;
}
/* Try next search base. */
ret = sdap_search_bases_next_base(req);
if (ret == EOK) {
tevent_req_done(req);
} else if (ret != EAGAIN) {
tevent_req_error(req, ret);
}
return;
}
int sdap_search_bases_recv(struct tevent_req *req,
TALLOC_CTX *mem_ctx,
size_t *reply_count,
struct sysdb_attrs ***reply)
{
struct sdap_search_bases_state *state =
tevent_req_data(req, struct sdap_search_bases_state);
TEVENT_REQ_RETURN_ON_ERROR(req);
*reply_count = state->reply_count;
*reply = talloc_steal(mem_ctx, state->reply);
return EOK;
}
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