nextcloud/lib/log.php

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<?php
/**
* ownCloud
*
* @author Frank Karlitschek
* @author Jakob Sack
* @copyright 2010 Frank Karlitschek karlitschek@kde.org
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library 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 AFFERO GENERAL PUBLIC LICENSE for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
/*
*
* The following SQL statement is just a help for developers and will not be
* executed!
*
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* CREATE TABLE `log` (
* `id` INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY ,
* `moment` DATETIME NOT NULL ,
* `appid` VARCHAR( 255 ) NOT NULL ,
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* `user` VARCHAR( 255 ) NOT NULL ,
* `action` VARCHAR( 255 ) NOT NULL ,
* `info` TEXT NOT NULL
* ) ENGINE = MYISAM ;
*
*/
/**
* This class is for logging
*/
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class OC_Log {
/**
* @brief adds an entry to the log
* @param $appid id of the app
* @param $subject username
* @param $predicate action
* @param $object = null; additional information
* @returns true/false
*
* This function adds another entry to the log database
*/
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public static function add( $appid, $subject, $predicate, $object = ' ' ){
$query=OC_DB::prepare("INSERT INTO `*PREFIX*log`(moment,appid,user,action,info) VALUES(NOW(),?,?,?,?)");
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$result=$query->execute(array($appid,$subject,$predicate,$object));
// Die if we have an error
if( PEAR::isError($result)) {
$entry = 'DB Error: "'.$result->getMessage().'"<br />';
$entry .= 'Offending command was: '.$query.'<br />';
error_log( $entry );
die( $entry );
}
return true;
}
/**
* @brief Fetches log entries
* @param $filter = array(); array with filter options
* @returns array with entries
*
* This function fetches the log entries according to the filter options
* passed.
*
* $filter is an associative array.
* The following keys are optional:
* - from: all entries after this date
* - until: all entries until this date
* - user: username (default: current user)
* - app: only entries for this app
*/
public static function get( $filter = array()){
$queryString='SELECT * FROM `*PREFIX*log` WHERE 1=1 ORDER BY moment DESC';
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$params=array();
if(isset($filter['from'])){
$queryString.='AND moment>? ';
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array_push($params,$filter('from'));
}
if(isset($filter['until'])){
$queryString.='AND moment<? ';
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array_push($params,$filter('until'));
}
if(isset($filter['user'])){
$queryString.='AND user=? ';
array_push($params,$filter('user'));
}
if(isset($filter['app'])){
$queryString.='AND appid=? ';
array_push($params,$filter('app'));
}
$query=OC_DB::prepare($queryString);
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$result=$query->execute($params)->fetchAll();
if(count($result)>0 and is_numeric($result[0]['moment'])){
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foreach($result as &$row){
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$row['moment']=OC_Util::formatDate($row['moment']);
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}
}
return $result;
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}
/**
* @brief removes log entries
* @param $date delete entries older than this date
* @returns true/false
*
* This function deletes all entries that are older than $date.
*/
public static function deleteBefore( $date ){
$query=OC_DB::prepare("DELETE FROM `*PREFIX*log` WHERE moment<?");
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$query->execute(array($date));
return true;
}
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/**
* @brief removes all log entries
* @returns true/false
*
* This function deletes all log entries.
*/
public static function deleteAll(){
$query=OC_DB::prepare("DELETE FROM `*PREFIX*log`");
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$query->execute();
return true;
}
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/**
* @brief filter an array of log entries on action
* @param array $logs the log entries to filter
* @param array $actions an array of actions to filter for
* @returns array
*/
public static function filterAction($logs,$actions){
$filteredLogs=array();
foreach($logs as $log){
if(array_search($log['action'],$actions)!==false){
$filteredLogs[]=$log;
}
}
return $filteredLogs;
}
}