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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 <tevent.h>
#include "sbus/sssd_dbus.h"
#include "providers/data_provider/dp_private.h"
#include "providers/data_provider/dp_iface.h"
#include "providers/backend.h"
#include "util/util.h"
static errno_t dp_sudo_parse_message(TALLOC_CTX *mem_ctx,
DBusMessage *msg,
uint32_t *_dp_flags,
uint32_t *_sudo_type,
char ***_rules)
{
DBusError error;
DBusMessageIter iter;
DBusMessageIter array_iter;
uint32_t dp_flags;
uint32_t sudo_type;
uint32_t num_rules;
const char *rule;
char **rules = NULL;
uint32_t i;
errno_t ret;
dbus_error_init(&error);
dbus_message_iter_init(msg, &iter);
/* get dp flags */
if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed, to parse the message!\n");
ret = EIO;
goto done;
}
dbus_message_iter_get_basic(&iter, &dp_flags);
dbus_message_iter_next(&iter); /* step behind the request type */
/* get type of the request */
if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed, to parse the message!\n");
ret = EIO;
goto done;
}
dbus_message_iter_get_basic(&iter, &sudo_type);
dbus_message_iter_next(&iter); /* step behind the request type */
/* get additional arguments according to the request type */
switch (sudo_type) {
case BE_REQ_SUDO_FULL:
/* no arguments required */
break;
case BE_REQ_SUDO_RULES:
/* additional arguments:
* rules_num
* rules[rules_num]
*/
/* read rules_num */
if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed, to parse the message!\n");
ret = EIO;
goto done;
}
dbus_message_iter_get_basic(&iter, &num_rules);
rules = talloc_zero_array(mem_ctx, char *, num_rules + 1);
if (rules == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, "talloc_array() failed.\n");
ret = ENOMEM;
goto done;
}
dbus_message_iter_next(&iter);
if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed, to parse the message!\n");
ret = EIO;
goto done;
}
dbus_message_iter_recurse(&iter, &array_iter);
/* read the rules */
for (i = 0; i < num_rules; i++) {
if (dbus_message_iter_get_arg_type(&array_iter)
!= DBUS_TYPE_STRING) {
DEBUG(SSSDBG_CRIT_FAILURE, "Failed, to parse the message!\n");
ret = EIO;
goto done;
}
dbus_message_iter_get_basic(&array_iter, &rule);
rules[i] = talloc_strdup(rules, rule);
if (rules[i] == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, "talloc_strdup() failed.\n");
ret = ENOMEM;
goto done;
}
dbus_message_iter_next(&array_iter);
}
rules[num_rules] = NULL;
break;
default:
DEBUG(SSSDBG_CRIT_FAILURE, "Invalid request type %d\n", sudo_type);
return EINVAL;
}
*_dp_flags = dp_flags;
*_sudo_type = sudo_type;
*_rules = rules;
ret = EOK;
done:
if (ret != EOK) {
talloc_free(rules);
}
return ret;
}
static const char *dp_sudo_get_key(uint32_t type)
{
switch (type) {
case BE_REQ_SUDO_FULL:
return "full-refresh";
case BE_REQ_SUDO_RULES:
return NULL;
}
return NULL;
}
static const char *dp_sudo_get_name(uint32_t type)
{
switch (type) {
case BE_REQ_SUDO_FULL:
return "SUDO Full Refresh";
case BE_REQ_SUDO_RULES:
return "SUDO Rules Refresh";
}
return NULL;
}
errno_t dp_sudo_handler(struct sbus_request *sbus_req, void *dp_cli)
{
struct dp_sudo_data *data;
uint32_t dp_flags;
const char *key;
const char *name;
errno_t ret;
data = talloc_zero(sbus_req, struct dp_sudo_data);
if (data == NULL) {
return ENOMEM;
}
ret = dp_sudo_parse_message(data, sbus_req->message, &dp_flags,
&data->type, &data->rules);
if (ret != EOK) {
return ret;
}
key = dp_sudo_get_key(data->type);
name = dp_sudo_get_name(data->type);
dp_req_with_reply(dp_cli, NULL, name, key, sbus_req, DPT_SUDO,
DPM_SUDO_HANDLER, dp_flags, data,
dp_req_reply_std, struct dp_reply_std);
return EOK;
}
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