322 lines
8.5 KiB
PHP
322 lines
8.5 KiB
PHP
<?php
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/**
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* @author Bart Visscher <bartv@thisnet.nl>
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* @author Bernhard Posselt <dev@bernhard-posselt.com>
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* @author Joas Schilling <nickvergessen@owncloud.com>
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* @author Lukas Reschke <lukas@statuscode.ch>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Olivier Paroz <github@oparoz.com>
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* @author Robin Appelman <icewind@owncloud.com>
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* @author Roeland Jago Douma <rullzer@owncloud.com>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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* @author Victor Dubiniuk <dubiniuk@owncloud.com>
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*
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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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 Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC;
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use InterfaSys\LogNormalizer\Normalizer;
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use \OCP\ILogger;
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use OCP\Security\StringUtils;
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use OCP\Util;
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/**
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* logging utilities
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*
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* This is a stand in, this should be replaced by a Psr\Log\LoggerInterface
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* compatible logger. See https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-3-logger-interface.md
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* for the full interface specification.
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*
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* MonoLog is an example implementing this interface.
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*/
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class Log implements ILogger {
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/** @var string */
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private $logger;
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/** @var SystemConfig */
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private $config;
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/** @var boolean|null cache the result of the log condition check for the request */
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private $logConditionSatisfied = null;
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/** @var Normalizer */
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private $normalizer;
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protected $methodsWithSensitiveParameters = [
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// Session/User
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'login',
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'checkPassword',
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'loginWithPassword',
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'updatePrivateKeyPassword',
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'validateUserPass',
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// TokenProvider
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'getToken',
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'isTokenPassword',
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'getPassword',
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'decryptPassword',
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'logClientIn',
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'generateToken',
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'validateToken',
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// TwoFactorAuth
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'solveChallenge',
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'verifyChallenge',
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//ICrypto
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'calculateHMAC',
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'encrypt',
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'decrypt',
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];
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/**
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* @param string $logger The logger that should be used
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* @param SystemConfig $config the system config object
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* @param null $normalizer
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*/
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public function __construct($logger=null, SystemConfig $config=null, $normalizer = null) {
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// FIXME: Add this for backwards compatibility, should be fixed at some point probably
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if($config === null) {
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$config = \OC::$server->getSystemConfig();
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}
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$this->config = $config;
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// FIXME: Add this for backwards compatibility, should be fixed at some point probably
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if($logger === null) {
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$this->logger = 'OC\\Log\\'.ucfirst($this->config->getValue('log_type', 'owncloud'));
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call_user_func(array($this->logger, 'init'));
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} else {
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$this->logger = $logger;
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}
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if ($normalizer === null) {
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$this->normalizer = new Normalizer();
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} else {
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$this->normalizer = $normalizer;
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}
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}
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/**
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* System is unusable.
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*
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* @param string $message
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* @param array $context
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* @return void
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*/
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public function emergency($message, array $context = array()) {
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$this->log(Util::FATAL, $message, $context);
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}
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/**
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* Action must be taken immediately.
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*
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* Example: Entire website down, database unavailable, etc. This should
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* trigger the SMS alerts and wake you up.
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*
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* @param string $message
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* @param array $context
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* @return void
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*/
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public function alert($message, array $context = array()) {
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$this->log(Util::ERROR, $message, $context);
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}
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/**
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* Critical conditions.
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*
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* Example: Application component unavailable, unexpected exception.
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*
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* @param string $message
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* @param array $context
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* @return void
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*/
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public function critical($message, array $context = array()) {
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$this->log(Util::ERROR, $message, $context);
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}
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/**
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* Runtime errors that do not require immediate action but should typically
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* be logged and monitored.
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*
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* @param string $message
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* @param array $context
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* @return void
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*/
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public function error($message, array $context = array()) {
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$this->log(Util::ERROR, $message, $context);
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}
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/**
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* Exceptional occurrences that are not errors.
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*
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* Example: Use of deprecated APIs, poor use of an API, undesirable things
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* that are not necessarily wrong.
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*
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* @param string $message
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* @param array $context
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* @return void
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*/
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public function warning($message, array $context = array()) {
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$this->log(Util::WARN, $message, $context);
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}
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/**
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* Normal but significant events.
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*
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* @param string $message
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* @param array $context
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* @return void
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*/
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public function notice($message, array $context = array()) {
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$this->log(Util::INFO, $message, $context);
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}
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/**
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* Interesting events.
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*
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* Example: User logs in, SQL logs.
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*
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* @param string $message
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* @param array $context
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* @return void
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*/
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public function info($message, array $context = array()) {
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$this->log(Util::INFO, $message, $context);
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}
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/**
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* Detailed debug information.
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*
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* @param string $message
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* @param array $context
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* @return void
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*/
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public function debug($message, array $context = array()) {
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$this->log(Util::DEBUG, $message, $context);
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}
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/**
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* Logs with an arbitrary level.
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*
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* @param mixed $level
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* @param string $message
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* @param array $context
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* @return void
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*/
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public function log($level, $message, array $context = array()) {
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$minLevel = min($this->config->getValue('loglevel', Util::WARN), Util::ERROR);
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$logCondition = $this->config->getValue('log.condition', []);
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array_walk($context, [$this->normalizer, 'format']);
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if (isset($context['app'])) {
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$app = $context['app'];
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/**
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* check log condition based on the context of each log message
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* once this is met -> change the required log level to debug
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*/
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if(!empty($logCondition)
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&& isset($logCondition['apps'])
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&& in_array($app, $logCondition['apps'], true)) {
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$minLevel = Util::DEBUG;
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}
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} else {
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$app = 'no app in context';
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}
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// interpolate $message as defined in PSR-3
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$replace = array();
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foreach ($context as $key => $val) {
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$replace['{' . $key . '}'] = $val;
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}
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// interpolate replacement values into the message and return
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$message = strtr($message, $replace);
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/**
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* check for a special log condition - this enables an increased log on
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* a per request/user base
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*/
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if($this->logConditionSatisfied === null) {
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// default to false to just process this once per request
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$this->logConditionSatisfied = false;
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if(!empty($logCondition)) {
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// check for secret token in the request
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if(isset($logCondition['shared_secret'])) {
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$request = \OC::$server->getRequest();
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// if token is found in the request change set the log condition to satisfied
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if($request && hash_equals($logCondition['shared_secret'], $request->getParam('log_secret'))) {
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$this->logConditionSatisfied = true;
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}
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}
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// check for user
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if(isset($logCondition['users'])) {
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$user = \OC::$server->getUserSession()->getUser();
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// if the user matches set the log condition to satisfied
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if($user !== null && in_array($user->getUID(), $logCondition['users'], true)) {
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$this->logConditionSatisfied = true;
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}
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}
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}
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}
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// if log condition is satisfied change the required log level to DEBUG
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if($this->logConditionSatisfied) {
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$minLevel = Util::DEBUG;
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}
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if ($level >= $minLevel) {
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$logger = $this->logger;
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call_user_func(array($logger, 'write'), $app, $message, $level);
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}
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}
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/**
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* Logs an exception very detailed
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*
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* @param \Exception | \Throwable $exception
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* @param array $context
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* @return void
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* @since 8.2.0
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*/
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public function logException($exception, array $context = array()) {
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$exception = array(
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'Exception' => get_class($exception),
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'Message' => $exception->getMessage(),
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'Code' => $exception->getCode(),
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'Trace' => $exception->getTraceAsString(),
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'File' => $exception->getFile(),
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'Line' => $exception->getLine(),
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);
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$exception['Trace'] = preg_replace('!(' . implode('|', $this->methodsWithSensitiveParameters) . ')\(.*\)!', '$1(*** sensitive parameters replaced ***)', $exception['Trace']);
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$msg = isset($context['message']) ? $context['message'] : 'Exception';
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$msg .= ': ' . json_encode($exception);
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$this->error($msg, $context);
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}
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}
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