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155 lines
4.0 KiB
155 lines
4.0 KiB
1 year ago
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<?php
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/*
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** Zabbix
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** Copyright (C) 2001-2023 Zabbix SIA
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 2 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**/
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/**
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* Container class for favorite value management.
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* Uses caching.
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*/
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class CFavorite {
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/**
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* Cache for favorite values.
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*
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* $cache[idx][]['value']
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* $cache[idx][]['source']
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*/
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private static $cache = null;
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/**
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* Returns favorite values from db. Uses caching for performance.
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*
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* @param string $idx identifier of favorite value group
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*
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* @return array list of favorite values corresponding to $idx
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*/
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public static function get($idx) {
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// return values if cached
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if (isset(self::$cache[$idx])) {
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return self::$cache[$idx];
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}
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$result = [];
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$db_profiles = DBselect(
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'SELECT p.value_id,p.source'.
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' FROM profiles p'.
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' WHERE p.userid='.CWebUser::$data['userid'].
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' AND p.idx='.zbx_dbstr($idx).
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' ORDER BY p.profileid'
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);
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while ($profile = DBfetch($db_profiles)) {
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$result[] = ['value' => $profile['value_id'], 'source' => $profile['source']];
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}
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// store db values in cache
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self::$cache[$idx] = $result;
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return $result;
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}
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/**
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* Adds favorite value to DB.
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*
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* @param string $idx identifier of favorite value group
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* @param int $favid value id
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* @param string $favobj source object
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*
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* @return bool did SQL INSERT succeeded
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*/
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public static function add($idx, $favid, $favobj = null) {
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if (self::exists($idx, $favid, $favobj)) {
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return true;
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}
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// add to cache only if cache is created
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if (isset(self::$cache[$idx])) {
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self::$cache[$idx][] = [
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'value' => $favid,
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'source' => $favobj
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];
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}
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$values = [
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'profileid' => get_dbid('profiles', 'profileid'),
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'userid' => CWebUser::$data['userid'],
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'idx' => zbx_dbstr($idx),
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'value_id' => zbx_dbstr($favid),
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'value_str' =>zbx_dbstr(''),
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'type' => PROFILE_TYPE_ID
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];
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if (!is_null($favobj)) {
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$values['source'] = zbx_dbstr($favobj);
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}
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return DBexecute(
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'INSERT INTO profiles ('.implode(', ', array_keys($values)).')'.
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' VALUES ('.implode(', ', $values).')'
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);
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}
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/**
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* Removes favorite from DB. Clears cache by $idx.
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*
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* @param string $idx identifier of favorite value group
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* @param int $favid value id
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* @param string $favobj source object
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*
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* @return boolean did SQL DELETE succeeded
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*/
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public static function remove($idx, $favid = 0, $favobj = null) {
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// empty cache, we know that all $idx values will be removed in DELETE
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if ($favid == 0 && $favobj === null) {
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self::$cache[$idx] = [];
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}
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// remove from cache, cache will be rebuilt upon get()
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else {
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self::$cache[$idx] = null;
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}
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return DBexecute(
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'DELETE FROM profiles'.
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' WHERE userid='.CWebUser::$data['userid'].
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' AND idx='.zbx_dbstr($idx).
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($favid > 0 ? ' AND value_id='.zbx_dbstr($favid) : '').
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(is_null($favobj) ? '' : ' AND source='.zbx_dbstr($favobj))
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);
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}
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/**
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* Checks whether favorite value exists.
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*
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* @param string $idx identifier of favorite value group
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* @param int $favid value id
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* @param string $favobj source object
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*
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* @return boolean
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*/
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public static function exists($idx, $favid, $favobj = null) {
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$favorites = self::get($idx);
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foreach ($favorites as $favorite) {
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if (idcmp($favid, $favorite['value']) && $favorite['source'] == $favobj) {
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return true;
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}
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}
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return false;
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}
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}
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