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<?php
declare(strict_types=1);
namespace SimpleSAML\Logger;
use SimpleSAML\Configuration;
use SimpleSAML\Utils;
/**
* A logger that sends messages to syslog.
*
* @author Lasse Birnbaum Jensen, SDU.
* @author Andreas Åkre Solberg, UNINETT AS. <andreas.solberg@uninett.no>
* @package SimpleSAMLphp
*/
class SyslogLoggingHandler implements LoggingHandlerInterface
{
/** @var bool */
private $isWindows = false;
/** @var string */
protected $format = "%b %d %H:%M:%S";
/**
* Build a new logging handler based on syslog.
* @param \SimpleSAML\Configuration $config
*/
public function __construct(Configuration $config)
{
$facility = $config->getInteger('logging.facility', defined('LOG_LOCAL5') ? constant('LOG_LOCAL5') : LOG_USER);
// Remove any non-printable characters before storing
$processname = preg_replace('/[\x00-\x1F\x7F\xA0]/u', '', $config->getString('logging.processname', 'SimpleSAMLphp'));
// Setting facility to LOG_USER (only valid in Windows), enable log level rewrite on windows systems
if (Utils\System::getOS() === Utils\System::WINDOWS) {
$this->isWindows = true;
$facility = LOG_USER;
}
openlog($processname, LOG_PID, $facility);
}
/**
* Set the format desired for the logs.
*
* @param string $format The format used for logs.
* @return void
*/
public function setLogFormat($format)
{
$this->format = $format;
}
/**
* Log a message to syslog.
*
* @param int $level The log level.
* @param string $string The formatted message to log.
* @return void
*/
public function log($level, $string)
{
// changing log level to supported levels if OS is Windows
if ($this->isWindows) {
if ($level <= 4) {
$level = LOG_ERR;
} else {
$level = LOG_INFO;
}
}
$formats = ['%process', '%level'];
$replacements = ['', $level];
$string = str_replace($formats, $replacements, $string);
$string = preg_replace('/^%date(\{[^\}]+\})?\s*/', '', $string);
syslog($level, $string);
}
}
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