vendor/composer/ca-bundle/src/CaBundle.php

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<?php

/*
 * This file is part of composer/ca-bundle.
 *
 * (c) Composer <https://github.com/composer>
 *
 * For the full copyright and license information, please view
 * the LICENSE file that was distributed with this source code.
 */

namespace Composer\CaBundle;

use Psr\Log\LoggerInterface;
use Symfony\Component\Process\PhpProcess;

/**
 * @author Chris Smith <chris@cs278.org>
 * @author Jordi Boggiano <j.boggiano@seld.be>
 */
class CaBundle
{
    /** @var string|null */
    private static $caPath;
    /** @var array<string, bool> */
    private static $caFileValidity = array();
    /** @var bool|null */
    private static $useOpensslParse;

    /**
     * Returns the system CA bundle path, or a path to the bundled one
     *
     * This method was adapted from Sslurp.
     * https://github.com/EvanDotPro/Sslurp
     *
     * (c) Evan Coury <me@evancoury.com>
     *
     * For the full copyright and license information, please see below:
     *
     * Copyright (c) 2013, Evan Coury
     * All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without modification,
     * are permitted provided that the following conditions are met:
     *
     *     * Redistributions of source code must retain the above copyright notice,
     *       this list of conditions and the following disclaimer.
     *
     *     * Redistributions in binary form must reproduce the above copyright notice,
     *       this list of conditions and the following disclaimer in the documentation
     *       and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
     * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
     * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT