drupal-civicrm/sites/all/modules/civicrm/CRM/Utils/Check.php

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2018-01-14 15:10:16 +02:00
<?php
/*
+--------------------------------------------------------------------+
| CiviCRM version 4.7 |
+--------------------------------------------------------------------+
| Copyright CiviCRM LLC (c) 2004-2017 |
+--------------------------------------------------------------------+
| This file is a part of CiviCRM. |
| |
| CiviCRM is free software; you can copy, modify, and distribute it |
| under the terms of the GNU Affero General Public License |
| Version 3, 19 November 2007 and the CiviCRM Licensing Exception. |
| |
| CiviCRM 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 and the CiviCRM Licensing Exception along |
| with this program; if not, contact CiviCRM LLC |
| at info[AT]civicrm[DOT]org. If you have questions about the |
| GNU Affero General Public License or the licensing of CiviCRM, |
| see the CiviCRM license FAQ at http://civicrm.org/licensing |
+--------------------------------------------------------------------+
*/
/**
*
* @package CRM
* @copyright CiviCRM LLC (c) 2004-2017
*/
class CRM_Utils_Check {
// How often to run checks and notify admins about issues.
const CHECK_TIMER = 86400;
/**
* @var array
* @link https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-3-logger-interface.md
*/
protected static $severityList = array(
\Psr\Log\LogLevel::DEBUG,
\Psr\Log\LogLevel::INFO,
\Psr\Log\LogLevel::NOTICE,
\Psr\Log\LogLevel::WARNING,
\Psr\Log\LogLevel::ERROR,
\Psr\Log\LogLevel::CRITICAL,
\Psr\Log\LogLevel::ALERT,
\Psr\Log\LogLevel::EMERGENCY,
);
/**
* We only need one instance of this object, so we use the
* singleton pattern and cache the instance in this variable
*
* @var object
*/
static private $_singleton = NULL;
/**
* Provide static instance of CRM_Utils_Check.
*
* @return CRM_Utils_Check
*/
public static function &singleton() {
if (!isset(self::$_singleton)) {
self::$_singleton = new CRM_Utils_Check();
}
return self::$_singleton;
}
/**
* @return array
*/
public static function getSeverityList() {
return self::$severityList;
}
/**
* Display daily system status alerts (admin only).
*/
public function showPeriodicAlerts() {
if (CRM_Core_Permission::check('administer CiviCRM')) {
$session = CRM_Core_Session::singleton();
if ($session->timer('check_' . __CLASS__, self::CHECK_TIMER)) {
// Best attempt at re-securing folders
$config = CRM_Core_Config::singleton();
$config->cleanup(0, FALSE);
$statusMessages = array();
$maxSeverity = 0;
foreach ($this->checkAll() as $message) {
if (!$message->isVisible()) {
continue;
}
if ($message->getLevel() >= 3) {
$maxSeverity = max($maxSeverity, $message->getLevel());
$statusMessage = $message->getMessage();
$statusMessages[] = $statusTitle = $message->getTitle();
}
}
if ($statusMessages) {
if (count($statusMessages) > 1) {
$statusTitle = self::toStatusLabel($maxSeverity);
$statusMessage = '<ul><li>' . implode('</li><li>', $statusMessages) . '</li></ul>';
}
$statusMessage .= '<p><a href="' . CRM_Utils_System::url('civicrm/a/#/status') . '">' . ts('View details and manage alerts') . '</a></p>';
$statusType = $maxSeverity >= 4 ? 'error' : 'alert';
CRM_Core_Session::setStatus($statusMessage, $statusTitle, $statusType);
}
}
}
}
/**
* Sort messages based upon severity
*
* @param CRM_Utils_Check_Message $a
* @param CRM_Utils_Check_Message $b
* @return int
*/
public static function severitySort($a, $b) {
$aSeverity = $a->getLevel();
$bSeverity = $b->getLevel();
if ($aSeverity == $bSeverity) {
return strcmp($a->getName(), $b->getName());
}
// The Message constructor guarantees that these will always be integers.
return ($aSeverity < $bSeverity);
}
/**
* Get the integer value (useful for thresholds) of the severity.
*
* @param int|string $severity
* the value to look up
* @param bool $reverse
* whether to find the constant from the integer
* @return string|int
* @throws \CRM_Core_Exception
*/
public static function severityMap($severity, $reverse = FALSE) {
if ($reverse) {
if (isset(self::$severityList[$severity])) {
return self::$severityList[$severity];
}
}
else {
// Lowercase string-based severities
$severity = strtolower($severity);
if (in_array($severity, self::$severityList)) {
return array_search($severity, self::$severityList);
}
}
throw new CRM_Core_Exception('Invalid PSR Severity Level');
}
/**
* Throw an exception if any of the checks fail.
*
* @param array|NULL $messages
* [CRM_Utils_Check_Message]
* @param string $threshold
*
* @throws \CRM_Core_Exception
* @throws \Exception
*/
public function assertValid($messages = NULL, $threshold = \Psr\Log\LogLevel::ERROR) {
if ($messages === NULL) {
$messages = $this->checkAll();
}
$minLevel = self::severityMap($threshold);
$errors = array();
foreach ($messages as $message) {
if ($message->getLevel() >= $minLevel) {
$errors[] = $message->toArray();
}
}
if ($errors) {
throw new Exception("System $threshold: " . print_r($errors, TRUE));
}
}
/**
* Run all system checks.
*
* This functon is wrapped by the System.check api.
*
* Calls hook_civicrm_check() for extensions to add or modify messages.
* @link http://wiki.civicrm.org/confluence/display/CRMDOC/hook_civicrm_check
*
* @param bool $max
* Whether to return just the maximum non-hushed severity
*
* @return array
* Array of CRM_Utils_Check_Message objects
*/
public static function checkAll($max = FALSE) {
$messages = array();
foreach (glob(__DIR__ . '/Check/Component/*.php') as $filePath) {
$className = 'CRM_Utils_Check_Component_' . basename($filePath, '.php');
/* @var CRM_Utils_Check_Component $check */
$check = new $className();
if ($check->isEnabled()) {
$messages = array_merge($messages, $check->checkAll());
}
}
CRM_Utils_Hook::check($messages);
uasort($messages, array(__CLASS__, 'severitySort'));
$maxSeverity = 1;
foreach ($messages as $message) {
if (!$message->isVisible()) {
continue;
}
$maxSeverity = max(1, $message->getLevel());
break;
}
Civi::settings()->set('systemStatusCheckResult', $maxSeverity);
return ($max) ? $maxSeverity : $messages;
}
/**
* @param int $level
* @return string
*/
public static function toStatusLabel($level) {
switch ($level) {
case 7:
return ts('System Status: Emergency');
case 6:
return ts('System Status: Alert');
case 5:
return ts('System Status: Critical');
case 4:
return ts('System Status: Error');
case 3:
return ts('System Status: Warning');
case 2:
return ts('System Status: Notice');
default:
return ts('System Status: Ok');
}
}
}