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File / Folder	Size	Action
.	-
Attribute	--	ren
Formatter	--	ren
Handler	--	ren
Processor	--	ren
Test	--	ren
DateTimeImmutable.php	1.032KB	edt ren
ErrorHandler.php	10KB	edt ren
Level.php	5.352KB	edt ren
LogRecord.php	3.283KB	edt ren
Logger.php	22.435KB	edt ren
Registry.php	3.928KB	edt ren
ResettableInterface.php	0.951KB	edt ren
SignalHandler.php	3.803KB	edt ren
Utils.php	9.17KB	edt ren

<?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;

use Psr\Log\LoggerInterface;
use Psr\Log\LogLevel;
use ReflectionExtension;

/**
 * Monolog POSIX signal handler
 *
 * @author Robert Gust-Bardon <robert@gust-bardon.org>
 */
class SignalHandler
{
    private LoggerInterface $logger;

/** @var array<int, callable|string|int> SIG_DFL, SIG_IGN or previous callable */
    private array $previousSignalHandler = [];
    /** @var array<int, \Psr\Log\LogLevel::*> */
    private array $signalLevelMap = [];
    /** @var array<int, bool> */
    private array $signalRestartSyscalls = [];

public function __construct(LoggerInterface $logger)
    {
        $this->logger = $logger;
    }

/**
     * @param  int|string|Level $level Level or level name
     * @return $this
     *
     * @phpstan-param value-of<Level::VALUES>|value-of<Level::NAMES>|Level|LogLevel::* $level
     */
    public function registerSignalHandler(int $signo, int|string|Level $level = LogLevel::CRITICAL, bool $callPrevious = true, bool $restartSyscalls = true, ?bool $async = true): self
    {
        if (!extension_loaded('pcntl') || !function_exists('pcntl_signal')) {
            return $this;
        }

$level = Logger::toMonologLevel($level)->toPsrLogLevel();

if ($callPrevious) {
            $handler = pcntl_signal_get_handler($signo);
            $this->previousSignalHandler[$signo] = $handler;
        } else {
            unset($this->previousSignalHandler[$signo]);
        }
        $this->signalLevelMap[$signo] = $level;
        $this->signalRestartSyscalls[$signo] = $restartSyscalls;

if ($async !== null) {
            pcntl_async_signals($async);
        }

pcntl_signal($signo, [$this, 'handleSignal'], $restartSyscalls);

return $this;
    }

/**
     * @param mixed $siginfo
     */
    public function handleSignal(int $signo, $siginfo = null): void
    {
        /** @var array<int, string> $signals */
        static $signals = [];

if (\count($signals) === 0 && extension_loaded('pcntl')) {
            $pcntl = new ReflectionExtension('pcntl');
            foreach ($pcntl->getConstants() as $name => $value) {
                if (substr($name, 0, 3) === 'SIG' && $name[3] !== '_' && is_int($value)) {
                    $signals[$value] = $name;
                }
            }
        }

$level = $this->signalLevelMap[$signo] ?? LogLevel::CRITICAL;
        $signal = $signals[$signo] ?? $signo;
        $context = $siginfo ?? [];
        $this->logger->log($level, sprintf('Program received signal %s', $signal), $context);

if (!isset($this->previousSignalHandler[$signo])) {
            return;
        }

if ($this->previousSignalHandler[$signo] === SIG_DFL) {
            if (extension_loaded('pcntl') && function_exists('pcntl_signal') && function_exists('pcntl_sigprocmask') && function_exists('pcntl_signal_dispatch')
                && extension_loaded('posix') && function_exists('posix_getpid') && function_exists('posix_kill')
            ) {
                $restartSyscalls = $this->signalRestartSyscalls[$signo] ?? true;
                pcntl_signal($signo, SIG_DFL, $restartSyscalls);
                pcntl_sigprocmask(SIG_UNBLOCK, [$signo], $oldset);
                posix_kill(posix_getpid(), $signo);
                pcntl_signal_dispatch();
                pcntl_sigprocmask(SIG_SETMASK, $oldset);
                pcntl_signal($signo, [$this, 'handleSignal'], $restartSyscalls);
            }
        } elseif (is_callable($this->previousSignalHandler[$signo])) {
            $this->previousSignalHandler[$signo]($signo, $siginfo);
        }
    }
}