<?php declare(strict_types=1);
/*
* This file is part of the Monolog package.
*
* (c) Jordi Boggiano <j.boggiano@seld.be>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Monolog\Handler;
use DateTimeInterface;
use Monolog\Handler\SyslogUdp\UdpSocket;
use Monolog\Level;
use Monolog\LogRecord;
use Monolog\Utils;
/**
* A Handler for logging to a remote syslogd server.
*
* @author Jesper Skovgaard Nielsen <nulpunkt@gmail.com>
* @author Dominik Kukacka <dominik.kukacka@gmail.com>
*/
class SyslogUdpHandler extends AbstractSyslogHandler
{
const RFC3164 = 0;
const RFC5424 = 1;
const RFC5424e = 2;
/** @var array<self::RFC*, string> */
private array $dateFormats = [
self::RFC3164 => 'M d H:i:s',
self::RFC5424 => \DateTime::RFC3339,
self::RFC5424e => \DateTime::RFC3339_EXTENDED,
];
protected UdpSocket $socket;
protected string $ident;
/** @var self::RFC* */
protected int $rfc;
/**
* @param string $host Either IP/hostname or a path to a unix socket (port must be 0 then)
* @param int $port Port number, or 0 if $host is a unix socket
* @param string|int $facility Either one of the names of the keys in $this->facilities, or a LOG_* facility constant
* @param bool $bubble Whether the messages that are handled can bubble up the stack or not
* @param string $ident Program name or tag for each log message.
* @param int $rfc RFC to format the message for.
* @throws MissingExtensionException when there is no socket extension
*
* @phpstan-param self::RFC* $rfc
*/
public function __construct(string $host, int $port = 514, string|int $facility = LOG_USER, int|string|Level $level = Level::Debug, bool $bubble = true, string $ident = 'php', int $rfc = self::RFC5424)
{
if (!\extension_loaded('sockets')) {
throw new MissingExtensionException('The sockets extension is required to use the SyslogUdpHandler');
}
parent::__construct($facility, $level, $bubble);
$this->ident = $ident;
$this->rfc = $rfc;
$this->socket = new UdpSocket($host, $port);
}
protected function write(LogRecord $record): void
{
$lines = $this->splitMessageIntoLines($record->formatted);
$header = $this->makeCommonSyslogHeader($this->toSyslogPriority($record->level), $record->datetime);
foreach ($lines as $line) {
$this->socket->write($line, $header);
}
}
public function close(): void
{
$this->socket->close();
}
/**
* @param string|string[] $message
* @return string[]
*/
private function splitMessageIntoLines($message): array
{
if (\is_array($message)) {
$message = implode("\n", $message);
}
$lines = preg_split('/$\R?^/m', (string) $message, -1, PREG_SPLIT_NO_EMPTY);
if (false === $lines) {
$pcreErrorCode = preg_last_error();
throw new \RuntimeException('Could not preg_split: ' . $pcreErrorCode . ' / ' . preg_last_error_msg());
}
return $lines;
}
/**
* Make common syslog header (see rfc5424 or rfc3164)
*/
protected function makeCommonSyslogHeader(int $severity, DateTimeInterface $datetime): string
{
$priority = $severity + $this->facility;
$pid = getmypid();
if (false === $pid) {
$pid = '-';
}
$hostname = gethostname();
if (false === $hostname) {
$hostname = '-';
}
if ($this->rfc === self::RFC3164) {
// see https://github.com/phpstan/phpstan/issues/5348
// @phpstan-ignore-next-line
$dateNew = $datetime->setTimezone(new \DateTimeZone('UTC'));
$date = $dateNew->format($this->dateFormats[$this->rfc]);
return "<$priority>" .
$date . " " .
$hostname . " " .
$this->ident . "[" . $pid . "]: ";
}
$date = $datetime->format($this->dateFormats[$this->rfc]);
return "<$priority>1 " .
$date . " " .
$hostname . " " .
$this->ident . " " .
$pid . " - - ";
}
/**
* Inject your own socket, mainly used for testing
*
* @return $this
*/
public function setSocket(UdpSocket $socket): self
{
$this->socket = $socket;
return $this;
}
}
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