Initial commit

application/Espo/Core/Utils/System.php

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+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2025 EspoCRM, Inc.
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Core\Utils;
+
+use Symfony\Component\Process\PhpExecutableFinder;
+
+class System
+{
+    /**
+     * Get a web server name.
+     *
+     * @return string E.g. `microsoft-iis`, `nginx`, `apache`.
+     */
+    public function getServerType(): string
+    {
+        $serverSoft = $_SERVER['SERVER_SOFTWARE'];
+
+        preg_match('/^(.*?)\//i', $serverSoft, $match);
+
+        if (empty($match[1])) {
+            preg_match('/^(.*)\/?/i', $serverSoft, $match);
+        }
+
+        return strtolower(
+            trim($match[1]) /** @phpstan-ignore-line */
+        );
+    }
+
+    /**
+     * Get an OS. Details at http://en.wikipedia.org/wiki/Uname.
+     *
+     * @return ?string E.g. `windows`, `mac`, `linux`.
+     */
+    public function getOS(): ?string
+    {
+        $osList = [
+            'windows' => [
+                'win',
+                'UWIN',
+            ],
+            'mac' => [
+                'mac',
+                'darwin',
+            ],
+            'linux' => [
+                'linux',
+                'cygwin',
+                'GNU',
+                'FreeBSD',
+                'OpenBSD',
+                'NetBSD',
+            ],
+        ];
+
+        $sysOS = strtolower(PHP_OS);
+
+        foreach ($osList as $osName => $osSystem) {
+            if (preg_match('/^('.implode('|', $osSystem).')/i', $sysOS)) {
+                return $osName;
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * Get a root directory of EspoCRM.
+     */
+    public function getRootDir(): string
+    {
+        $bPath = realpath('bootstrap.php') ?: '';
+
+        return dirname($bPath);
+    }
+
+    /**
+     * Get a PHP binary.
+     */
+    public function getPhpBinary(): ?string
+    {
+        $path = (new PhpExecutableFinder)->find();
+
+        if ($path === false) {
+            return null;
+        }
+
+        return $path;
+    }
+
+    /**
+     * Get PHP version (only digits and dots).
+     */
+    public static function getPhpVersion(): string
+    {
+        $version = phpversion();
+
+        $matches = null;
+
+        if (preg_match('/^[0-9\.]+[0-9]/', $version, $matches)) {
+            return $matches[0];
+        }
+
+        return $version;
+    }
+
+    /**
+     * @return string|false
+     */
+    public function getPhpParam(string $name)
+    {
+        return ini_get($name);
+    }
+
+    /**
+     * Whether a PHP extension is loaded.
+     */
+    public function hasPhpExtension(string $name): bool
+    {
+        return extension_loaded($name);
+    }
+
+    /**
+     * @deprecated Use `hasPhpExtension`.
+     */
+    public function hasPhpLib(string $name): bool
+    {
+        return extension_loaded($name);
+    }
+
+    /**
+     * Get a process PID.
+     */
+    public static function getPid(): ?int
+    {
+        if (!function_exists('getmypid')) {
+            return null;
+        }
+
+        $pid = getmypid();
+
+        if ($pid === false) {
+            return null;
+        }
+
+        return $pid;
+    }
+
+    public static function isProcessActive(?int $pid): bool
+    {
+        if ($pid === null) {
+            return false;
+        }
+
+        if (!self::isPosixSupported()) {
+            return false;
+        }
+
+        if (posix_getsid($pid) === false) {
+            return false;
+        }
+
+        return true;
+    }
+
+    public static function isPosixSupported(): bool
+    {
+        return function_exists('posix_getsid');
+    }
+}