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<?php
/*
** Zabbix
** Copyright (C) 2001-2019 Zabbix SIA
**
** 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 2 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, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
/**
* Class containing methods for operations with task.
*/
class CTask extends CApiService {
/**
* @param array $task Task to create.
* @param string|array $task['itemids'] Array of item and LLD rule IDs to create tasks for.
*
* @return array
*/
public function create(array $task) {
$this->validateCreate($task);
// Check if tasks for items and LLD rules already exist.
$db_tasks = DBselect(
'SELECT t.taskid,tcn.itemid'.
' FROM task t,task_check_now tcn'.
' WHERE t.taskid=tcn.taskid'.
' AND t.type='.ZBX_TM_TASK_CHECK_NOW.
' AND t.status='.ZBX_TM_STATUS_NEW.
' AND '.dbConditionId('tcn.itemid', $task['itemids'])
);
$item_tasks = [];
foreach ($task['itemids'] as $itemid) {
$item_tasks[$itemid] = 0;
}
while ($db_task = DBfetch($db_tasks)) {
$item_tasks[$db_task['itemid']] = $db_task['taskid'];
}
$itemids = [];
foreach ($item_tasks as $itemid => $taskid) {
if ($taskid == 0) {
$itemids[] = $itemid;
}
}
if ($itemids) {
$taskid = DB::reserveIds('task', count($itemids));
$ins_tasks = [];
$ins_check_now_tasks = [];
$time = time();
foreach ($itemids as $i => $itemid) {
$ins_tasks[] = [
'taskid' => $taskid,
'type' => $task['type'],
'status' => ZBX_TM_STATUS_NEW,
'clock' => $time,
'ttl' => SEC_PER_HOUR
];
$ins_check_now_tasks[] = [
'taskid' => $taskid,
'itemid' => $itemid
];
$item_tasks[$itemid] = (string) $taskid++;
}
DB::insertBatch('task', $ins_tasks, false);
DB::insertBatch('task_check_now', $ins_check_now_tasks, false);
}
return ['taskids' => array_values($item_tasks)];
}
/**
* Validates the input for create method. Checks if user is at least a regular admin, validates user input, checks
* if user has permissions to given items and LLD rules, checks item and LLD rule types, checks if items and
* LLD rules are enabled, checks if host is monitored and it's not a template.
*
* @param array $task Task to validate.
*
* @throws APIException if the input is invalid.
*/
protected function validateCreate(array &$task) {
if (self::$userData['type'] < USER_TYPE_ZABBIX_ADMIN) {
self::exception(ZBX_API_ERROR_PERMISSIONS, _('You do not have permission to perform this operation.'));
}
$api_input_rules = ['type' => API_OBJECT, 'fields' => [
'type' => ['type' => API_INT32, 'flags' => API_REQUIRED, 'in' => implode(',', [ZBX_TM_TASK_CHECK_NOW])],
'itemids' => ['type' => API_IDS, 'flags' => API_REQUIRED | API_NOT_EMPTY | API_NORMALIZE, 'uniq' => true]
]];
if (!CApiInputValidator::validate($api_input_rules, $task, '/', $error)) {
self::exception(ZBX_API_ERROR_PARAMETERS, $error);
}
// Check if user has permissions to items and LLD rules.
$items = API::Item()->get([
'output' => ['itemid', 'type', 'hostid', 'status'],
'itemids' => $task['itemids'],
'editable' => true
]);
$discovery_rules = [];
$itemids_cnt = count($task['itemids']);
$items_cnt = count($items);
if ($items_cnt != $itemids_cnt) {
$discovery_rules = API::DiscoveryRule()->get([
'output' => ['itemid', 'type', 'hostid', 'status'],
'itemids' => $task['itemids'],
'editable' => true
]);
if (count($discovery_rules) + $items_cnt != $itemids_cnt) {
self::exception(ZBX_API_ERROR_PERMISSIONS,
_('No permissions to referred object or it does not exist!')
);
}
}
// Validate item and LLD rule types and statuses, and collect host IDs for later.
$hostids = [];
$allowed_types = checkNowAllowedTypes();
foreach ($items as $item) {
if (!in_array($item['type'], $allowed_types)) {
self::exception(ZBX_API_ERROR_PARAMETERS, _s('Cannot send request: %1$s.', _('wrong item type')));
}
if ($item['status'] != ITEM_STATUS_ACTIVE) {
self::exception(ZBX_API_ERROR_PARAMETERS, _s('Cannot send request: %1$s.', _('item is disabled')));
}
$hostids[$item['hostid']] = true;
}
foreach ($discovery_rules as $discovery_rule) {
if (!in_array($discovery_rule['type'], $allowed_types)) {
self::exception(ZBX_API_ERROR_PARAMETERS,
_s('Cannot send request: %1$s.', _('wrong discovery rule type'))
);
}
if ($discovery_rule['status'] != ITEM_STATUS_ACTIVE) {
self::exception(ZBX_API_ERROR_PARAMETERS,
_s('Cannot send request: %1$s.', _('discovery rule is disabled'))
);
}
$hostids[$discovery_rule['hostid']] = true;
}
// Check if those are actually hosts because given hostids could actually be templateids.
$hosts = API::Host()->get([
'output' => ['status'],
'hostids' => array_keys($hostids),
'templated_hosts' => true,
'nopermissions' => true
]);
// Check host status. Allow only monitored hosts.
foreach ($hosts as $host) {
if ($host['status'] != HOST_STATUS_MONITORED) {
self::exception(ZBX_API_ERROR_PARAMETERS, _s('Cannot send request: %1$s.', _('host is not monitored')));
}
}
}
}
|
