/session24/Home Practice/Mobile Management System/vendor/composer/ca-bundle/src/CaBundle.php
PHP | 291 lines | 152 code | 39 blank | 100 comment | 43 complexity | ce2de2d0d2ac7d0035333c47f062f7f3 MD5 | raw file
- <?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
- {
- private static $caPath;
- private static $caFileValidity = array();
- 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
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * @param LoggerInterface $logger optional logger for information about which CA files were loaded
- * @return string path to a CA bundle file or directory
- */
- public static function getSystemCaRootBundlePath(LoggerInterface $logger = null)
- {
- if (self::$caPath !== null) {
- return self::$caPath;
- }
- // If SSL_CERT_FILE env variable points to a valid certificate/bundle, use that.
- // This mimics how OpenSSL uses the SSL_CERT_FILE env variable.
- $envCertFile = getenv('SSL_CERT_FILE');
- if ($envCertFile && is_readable($envCertFile) && static::validateCaFile($envCertFile, $logger)) {
- return self::$caPath = $envCertFile;
- }
- // If SSL_CERT_DIR env variable points to a valid certificate/bundle, use that.
- // This mimics how OpenSSL uses the SSL_CERT_FILE env variable.
- $envCertDir = getenv('SSL_CERT_DIR');
- if ($envCertDir && is_dir($envCertDir) && is_readable($envCertDir)) {
- return self::$caPath = $envCertDir;
- }
- $configured = ini_get('openssl.cafile');
- if ($configured && strlen($configured) > 0 && is_readable($configured) && static::validateCaFile($configured, $logger)) {
- return self::$caPath = $configured;
- }
- $configured = ini_get('openssl.capath');
- if ($configured && is_dir($configured) && is_readable($configured)) {
- return self::$caPath = $configured;
- }
- $caBundlePaths = array(
- '/etc/pki/tls/certs/ca-bundle.crt', // Fedora, RHEL, CentOS (ca-certificates package)
- '/etc/ssl/certs/ca-certificates.crt', // Debian, Ubuntu, Gentoo, Arch Linux (ca-certificates package)
- '/etc/ssl/ca-bundle.pem', // SUSE, openSUSE (ca-certificates package)
- '/usr/local/share/certs/ca-root-nss.crt', // FreeBSD (ca_root_nss_package)
- '/usr/ssl/certs/ca-bundle.crt', // Cygwin
- '/opt/local/share/curl/curl-ca-bundle.crt', // OS X macports, curl-ca-bundle package
- '/usr/local/share/curl/curl-ca-bundle.crt', // Default cURL CA bunde path (without --with-ca-bundle option)
- '/usr/share/ssl/certs/ca-bundle.crt', // Really old RedHat?
- '/etc/ssl/cert.pem', // OpenBSD
- '/usr/local/etc/ssl/cert.pem', // FreeBSD 10.x
- '/usr/local/etc/openssl/cert.pem', // OS X homebrew, openssl package
- );
- foreach ($caBundlePaths as $caBundle) {
- if (@is_readable($caBundle) && static::validateCaFile($caBundle, $logger)) {
- return self::$caPath = $caBundle;
- }
- }
- foreach ($caBundlePaths as $caBundle) {
- $caBundle = dirname($caBundle);
- if (@is_dir($caBundle) && glob($caBundle.'/*')) {
- return self::$caPath = $caBundle;
- }
- }
- return self::$caPath = static::getBundledCaBundlePath(); // Bundled CA file, last resort
- }
- /**
- * Returns the path to the bundled CA file
- *
- * In case you don't want to trust the user or the system, you can use this directly
- *
- * @return string path to a CA bundle file
- */
- public static function getBundledCaBundlePath()
- {
- return __DIR__.'/../res/cacert.pem';
- }
- /**
- * Validates a CA file using opensl_x509_parse only if it is safe to use
- *
- * @param string $filename
- * @param LoggerInterface $logger optional logger for information about which CA files were loaded
- *
- * @return bool
- */
- public static function validateCaFile($filename, LoggerInterface $logger = null)
- {
- static $warned = false;
- if (isset(self::$caFileValidity[$filename])) {
- return self::$caFileValidity[$filename];
- }
- $contents = file_get_contents($filename);
- // assume the CA is valid if php is vulnerable to
- // https://www.sektioneins.de/advisories/advisory-012013-php-openssl_x509_parse-memory-corruption-vulnerability.html
- if (!static::isOpensslParseSafe()) {
- if (!$warned && $logger) {
- $logger->warning(sprintf(
- 'Your version of PHP, %s, is affected by CVE-2013-6420 and cannot safely perform certificate validation, we strongly suggest you upgrade.',
- PHP_VERSION
- ));
- $warned = true;
- }
- $isValid = !empty($contents);
- } else {
- $isValid = (bool) openssl_x509_parse($contents);
- }
- if ($logger) {
- $logger->debug('Checked CA file '.realpath($filename).': '.($isValid ? 'valid' : 'invalid'));
- }
- return self::$caFileValidity[$filename] = $isValid;
- }
- /**
- * Test if it is safe to use the PHP function openssl_x509_parse().
- *
- * This checks if OpenSSL extensions is vulnerable to remote code execution
- * via the exploit documented as CVE-2013-6420.
- *
- * @return bool
- */
- public static function isOpensslParseSafe()
- {
- if (null !== self::$useOpensslParse) {
- return self::$useOpensslParse;
- }
- if (PHP_VERSION_ID >= 50600) {
- return self::$useOpensslParse = true;
- }
- // Vulnerable:
- // PHP 5.3.0 - PHP 5.3.27
- // PHP 5.4.0 - PHP 5.4.22
- // PHP 5.5.0 - PHP 5.5.6
- if (
- (PHP_VERSION_ID < 50400 && PHP_VERSION_ID >= 50328)
- || (PHP_VERSION_ID < 50500 && PHP_VERSION_ID >= 50423)
- || (PHP_VERSION_ID < 50600 && PHP_VERSION_ID >= 50507)
- ) {
- // This version of PHP has the fix for CVE-2013-6420 applied.
- return self::$useOpensslParse = true;
- }
- if (defined('PHP_WINDOWS_VERSION_BUILD')) {
- // Windows is probably insecure in this case.
- return self::$useOpensslParse = false;
- }
- $compareDistroVersionPrefix = function ($prefix, $fixedVersion) {
- $regex = '{^'.preg_quote($prefix).'([0-9]+)$}';
- if (preg_match($regex, PHP_VERSION, $m)) {
- return ((int) $m[1]) >= $fixedVersion;
- }
- return false;
- };
- // Hard coded list of PHP distributions with the fix backported.
- if (
- $compareDistroVersionPrefix('5.3.3-7+squeeze', 18) // Debian 6 (Squeeze)
- || $compareDistroVersionPrefix('5.4.4-14+deb7u', 7) // Debian 7 (Wheezy)
- || $compareDistroVersionPrefix('5.3.10-1ubuntu3.', 9) // Ubuntu 12.04 (Precise)
- ) {
- return self::$useOpensslParse = true;
- }
- // Symfony Process component is missing so we assume it is unsafe at this point
- if (!class_exists('Symfony\Component\Process\PhpProcess')) {
- return self::$useOpensslParse = false;
- }
- // This is where things get crazy, because distros backport security
- // fixes the chances are on NIX systems the fix has been applied but
- // it's not possible to verify that from the PHP version.
- //
- // To verify exec a new PHP process and run the issue testcase with
- // known safe input that replicates the bug.
- // Based on testcase in https://github.com/php/php-src/commit/c1224573c773b6845e83505f717fbf820fc18415
- // changes in https://github.com/php/php-src/commit/76a7fd893b7d6101300cc656058704a73254d593
- $cert = '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';
- $script = <<<'EOT'
- error_reporting(-1);
- $info = openssl_x509_parse(base64_decode('%s'));
- var_dump(PHP_VERSION, $info['issuer']['emailAddress'], $info['validFrom_time_t']);
- EOT;
- $script = '<'."?php\n".sprintf($script, $cert);
- try {
- $process = new PhpProcess($script);
- $process->mustRun();
- } catch (\Exception $e) {
- // In the case of any exceptions just accept it is not possible to
- // determine the safety of openssl_x509_parse and bail out.
- return self::$useOpensslParse = false;
- }
- $output = preg_split('{\r?\n}', trim($process->getOutput()));
- $errorOutput = trim($process->getErrorOutput());
- if (
- count($output) === 3
- && $output[0] === sprintf('string(%d) "%s"', strlen(PHP_VERSION), PHP_VERSION)
- && $output[1] === 'string(27) "stefan.esser@sektioneins.de"'
- && $output[2] === 'int(-1)'
- && preg_match('{openssl_x509_parse\(\): illegal (?:ASN1 data type for|length in) timestamp in - on line \d+}', $errorOutput)
- ) {
- // This PHP has the fix backported probably by a distro security team.
- return self::$useOpensslParse = true;
- }
- return self::$useOpensslParse = false;
- }
- /**
- * Resets the static caches
- */
- public static function reset()
- {
- self::$caFileValidity = array();
- self::$caPath = null;
- self::$useOpensslParse = null;
- }
- }