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<?php
declare(strict_types=1);
/**
* MINZ - Copyright 2011 Marien Fressinaud
* Sous licence AGPL3 <http://www.gnu.org/licenses/>
*/
/**
* The Minz_Log class is used to log errors and warnings
*/
class Minz_Log {
/**
* Enregistre un message dans un fichier de log spécifique
* Message non loggué si
* - environment = SILENT
* - level = LOG_WARNING et environment = PRODUCTION
* - level = LOG_NOTICE et environment = PRODUCTION
* @param string $information message d'erreur / information à enregistrer
* @param int $level niveau d'erreur https://php.net/function.syslog
* @param string $file_name fichier de log
* @throws Minz_PermissionDeniedException
*/
public static function record(string $information, int $level, ?string $file_name = null): void {
$env = getenv('FRESHRSS_ENV');
if ($env == '') {
try {
$conf = Minz_Configuration::get('system');
$env = $conf->environment;
} catch (Minz_ConfigurationException $e) {
$env = 'production';
}
}
if (! ($env === 'silent' || ($env === 'production' && ($level >= LOG_NOTICE)))) {
$username = Minz_User::name() ?? Minz_User::INTERNAL_USER;
if ($file_name == null) {
$file_name = join_path(USERS_PATH, $username, LOG_FILENAME);
}
switch ($level) {
case LOG_ERR:
$level_label = 'error';
break;
case LOG_WARNING:
$level_label = 'warning';
break;
case LOG_NOTICE:
$level_label = 'notice';
break;
case LOG_DEBUG:
$level_label = 'debug';
break;
default:
$level = LOG_INFO;
$level_label = 'info';
}
$log = '[' . date('r') . '] [' . $level_label . '] --- ' . $information . "\n";
if (defined('COPY_LOG_TO_SYSLOG') && COPY_LOG_TO_SYSLOG) {
syslog($level, '[' . $username . '] ' . trim($log));
}
self::ensureMaxLogSize($file_name);
if (file_put_contents($file_name, $log, FILE_APPEND | LOCK_EX) === false) {
throw new Minz_PermissionDeniedException($file_name, Minz_Exception::ERROR);
}
}
}
/**
* Make sure we do not waste a huge amount of disk space with old log messages.
*
* This method can be called multiple times for one script execution, but its result will not change unless
* you call clearstatcache() in between. We won’t do do that for performance reasons.
*
* @throws Minz_PermissionDeniedException
*/
protected static function ensureMaxLogSize(string $file_name): void {
$maxSize = defined('MAX_LOG_SIZE') ? MAX_LOG_SIZE : 1048576;
if ($maxSize > 0 && @filesize($file_name) > $maxSize) {
$fp = fopen($file_name, 'c+');
if (is_resource($fp) && flock($fp, LOCK_EX)) {
fseek($fp, -(int)($maxSize / 2), SEEK_END);
$content = fread($fp, $maxSize);
rewind($fp);
ftruncate($fp, 0);
fwrite($fp, $content ?: '');
fwrite($fp, sprintf("[%s] [notice] --- Log rotate.\n", date('r')));
fflush($fp);
flock($fp, LOCK_UN);
} else {
throw new Minz_PermissionDeniedException($file_name, Minz_Exception::ERROR);
}
fclose($fp);
}
}
/**
* Some helpers to Minz_Log::record() method
* Parameters are the same of those of the record() method.
* @throws Minz_PermissionDeniedException
*/
public static function debug(string $msg, ?string $file_name = null): void {
self::record($msg, LOG_DEBUG, $file_name);
}
/** @throws Minz_PermissionDeniedException */
public static function notice(string $msg, ?string $file_name = null): void {
self::record($msg, LOG_NOTICE, $file_name);
}
/** @throws Minz_PermissionDeniedException */
public static function warning(string $msg, ?string $file_name = null): void {
self::record($msg, LOG_WARNING, $file_name);
}
/** @throws Minz_PermissionDeniedException */
public static function error(string $msg, ?string $file_name = null): void {
self::record($msg, LOG_ERR, $file_name);
}
}
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