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/*
Authors:
Pavel Březina <pbrezina@redhat.com>
Copyright (C) 2011 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 <string.h>
#include "providers/dp_backend.h"
#include "providers/ldap/ldap_common.h"
#include "providers/ldap/sdap.h"
#include "providers/ldap/sdap_async.h"
#include "providers/ldap/sdap_sudo.h"
static void sdap_sudo_reply(struct sdap_sudo_ctx *sudo_ctx, int errcode)
{
struct be_req *be_req = sudo_ctx->be_req;
talloc_zfree(sudo_ctx);
if (errcode == EOK) {
sdap_handler_done(be_req, DP_ERR_OK, errcode, strerror(errcode));
} else {
sdap_handler_done(be_req, DP_ERR_FATAL, errcode, strerror(errcode));
}
}
static void sdap_sudo_reply_offline(struct sdap_sudo_ctx *sudo_ctx)
{
struct be_req *be_req = sudo_ctx->be_req;
talloc_zfree(sudo_ctx);
sdap_handler_done(be_req, DP_ERR_OFFLINE, EAGAIN, "Provider is offline");
}
static int sdap_sudo_connect(struct sdap_sudo_ctx *sudo_ctx);
static void sdap_sudo_connect_done(struct tevent_req *subreq);
static int sdap_sudo_load_sudoers(struct sdap_sudo_ctx *sudo_ctx);
static void sdap_sudo_load_sudoers_done(struct tevent_req *subreq);
void sdap_sudo_handler(struct be_req *be_req)
{
struct sdap_sudo_ctx *sudo_ctx = NULL;
struct sdap_id_ctx *id_ctx = NULL;
int ret = EOK;
DEBUG(SSSDBG_TRACE_FUNC, ("Entering sdap_sudo_handler()\n"));
id_ctx = talloc_get_type(be_req->be_ctx->bet_info[BET_SUDO].pvt_bet_data,
struct sdap_id_ctx);
sudo_ctx = talloc_zero(be_req, struct sdap_sudo_ctx);
if (!sudo_ctx) {
ret = ENOMEM;
goto fail;
}
sudo_ctx->be_ctx = id_ctx->be;
sudo_ctx->be_req = be_req;
sudo_ctx->sdap_ctx = id_ctx;
sudo_ctx->sdap_op = NULL;
sudo_ctx->sdap_conn_cache = id_ctx->conn_cache;
ret = sdap_sudo_connect(sudo_ctx);
if (ret != EOK) {
goto fail;
}
return;
fail:
be_req->fn(be_req, DP_ERR_FATAL, ret, NULL);
}
int sdap_sudo_connect(struct sdap_sudo_ctx *sudo_ctx)
{
struct tevent_req *subreq = NULL;
int ret;
if (be_is_offline(sudo_ctx->be_ctx)) {
sdap_sudo_reply_offline(sudo_ctx);
return EOK;
}
if (sudo_ctx->sdap_op == NULL) {
sudo_ctx->sdap_op = sdap_id_op_create(sudo_ctx,
sudo_ctx->sdap_conn_cache);
if (sudo_ctx->sdap_op == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, ("sdap_id_op_create() failed\n"));
return EIO;
}
}
subreq = sdap_id_op_connect_send(sudo_ctx->sdap_op, sudo_ctx, &ret);
if (subreq == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE,
("sdap_id_op_connect_send() failed: %d(%s)\n", ret, strerror(ret)));
talloc_zfree(sudo_ctx->sdap_op);
return ret;
}
tevent_req_set_callback(subreq, sdap_sudo_connect_done, sudo_ctx);
return EOK;
}
void sdap_sudo_connect_done(struct tevent_req *subreq)
{
struct sdap_sudo_ctx *sudo_ctx = NULL;
int dp_error;
int ret;
sudo_ctx = tevent_req_callback_data(subreq, struct sdap_sudo_ctx);
ret = sdap_id_op_connect_recv(subreq, &dp_error);
talloc_zfree(subreq);
if (dp_error == DP_ERR_OFFLINE) {
talloc_zfree(sudo_ctx->sdap_op);
sdap_sudo_reply_offline(sudo_ctx);
return;
} else if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE,
("SUDO LDAP connection failed - %s\n", strerror(ret)));
goto fail;
}
DEBUG(SSSDBG_TRACE_FUNC, ("SUDO LDAP connection successful\n"));
ret = sdap_sudo_load_sudoers(sudo_ctx);
if (ret != EOK) {
goto fail;
}
return;
fail:
sdap_sudo_reply(sudo_ctx, ret);
}
int sdap_sudo_load_sudoers(struct sdap_sudo_ctx *sudo_ctx)
{
struct tevent_req *subreq = NULL;
struct be_ctx *be_ctx = sudo_ctx->be_ctx;
struct sdap_id_ctx *sdap_ctx = sudo_ctx->sdap_ctx;
static const char *attrs[] = {
SDAP_SUDO_ATTR_USER,
SDAP_SUDO_ATTR_HOST,
SDAP_SUDO_ATTR_COMMAND,
SDAP_SUDO_ATTR_OPTION,
SDAP_SUDO_ATTR_RUNASUSER,
SDAP_SUDO_ATTR_RUNASGROUP,
SDAP_SUDO_ATTR_NOTBEFORE,
SDAP_SUDO_ATTR_NOTAFTER,
SDAP_SUDO_ATTR_ORDER,
NULL
};
/*
* TODO
* - support multiple search bases
* - SDAP_ENUM_SEARCH_TIMEOUT specific for sudo?
*/
subreq = sdap_get_generic_send(sudo_ctx,
be_ctx->ev,
sdap_ctx->opts,
sdap_id_op_handle(sudo_ctx->sdap_op),
"dc=sudo,dc=redhat,dc=com",
LDAP_SCOPE_SUB,
SDAP_SUDO_FILTER,
attrs,
NULL, /* map */
0, /* num map */
dp_opt_get_int(sdap_ctx->opts->basic,
SDAP_ENUM_SEARCH_TIMEOUT));
if (subreq == NULL) {
return EIO;
}
tevent_req_set_callback(subreq, sdap_sudo_load_sudoers_done, sudo_ctx);
return EOK;
}
void sdap_sudo_load_sudoers_done(struct tevent_req *subreq)
{
struct sdap_sudo_ctx *sudo_ctx = NULL;
struct sysdb_attrs **reply = NULL;
size_t reply_count = 0;
int ret;
DEBUG(SSSDBG_TRACE_FUNC, ("Entering sdap_sudo_load_sudoers_done()\n"));
sudo_ctx = tevent_req_callback_data(subreq, struct sdap_sudo_ctx);
ret = sdap_get_generic_recv(subreq, sudo_ctx, &reply_count, &reply);
if (ret != EOK) {
goto fail;
}
sdap_sudo_reply(sudo_ctx, EOK);
return;
fail:
sdap_sudo_reply(sudo_ctx, ret);
}
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