<?php /** * SSL utilities for Requests * * @package Requests\Utilities */ namespace WpOrg\Requests; use WpOrg\Requests\Exception\InvalidArgument; use WpOrg\Requests\Utility\InputValidator; /** * SSL utilities for Requests * * Collection of utilities for working with and verifying SSL certificates. * * @package Requests\Utilities */ final class Ssl { /** * Verify the certificate against common name and subject alternative names * * Unfortunately, PHP doesn't check the certificate against the alternative * names, leading things like 'https://www.github.com/' to be invalid. * * @link https://tools.ietf.org/html/rfc2818#section-3.1 RFC2818, Section 3.1 * * @param string|Stringable $host Host name to verify against * @param array $cert Certificate data from openssl_x509_parse() * @return bool * @throws \WpOrg\Requests\Exception\InvalidArgument When the passed $host argument is not a string or a stringable object. * @throws \WpOrg\Requests\Exception\InvalidArgument When the passed $cert argument is not an array or array accessible. */ public static function verify_certificate($host, $cert) { if (InputValidator::is_string_or_stringable($host) === false) { throw InvalidArgument::create(1, '$host', 'string|Stringable', gettype($host)); } if (InputValidator::has_array_access($cert) === false) { throw InvalidArgument::create(2, '$cert', 'array|ArrayAccess', gettype($cert)); } $has_dns_alt = false; // Check the subjectAltName if (!empty($cert['extensions']['subjectAltName'])) { $altnames = explode(',', $cert['extensions']['subjectAltName']); foreach ($altnames as $altname) { $altname = trim($altname); if (strpos($altname, 'DNS:') !== 0) { continue; } $has_dns_alt = true; // Strip the 'DNS:' prefix and trim whitespace $altname = trim(substr($altname, 4)); // Check for a match if (self::match_domain($host, $altname) === true) { return true; } } if ($has_dns_alt === true) { return false; } } // Fall back to checking the common name if we didn't get any dNSName // alt names, as per RFC2818 if (!empty($cert['subject']['CN'])) { // Check for a match return (self::match_domain($host, $cert['subject']['CN']) === true); } return false; } /** * Verify that a reference name is valid * * Verifies a dNSName for HTTPS usage, (almost) as per Firefox's rules: * - Wildcards can only occur in a name with more than 3 components * - Wildcards can only occur as the last character in the first * component * - Wildcards may be preceded by additional characters * * We modify these rules to be a bit stricter and only allow the wildcard * character to be the full first component; that is, with the exclusion of * the third rule. * * @param string|Stringable $reference Reference dNSName * @return boolean Is the name valid? * @throws \WpOrg\Requests\Exception\InvalidArgument When the passed argument is not a string or a stringable object. */ public static function verify_reference_name($reference) { if (InputValidator::is_string_or_stringable($reference) === false) { throw InvalidArgument::create(1, '$reference', 'string|Stringable', gettype($reference)); } if ($reference === '') { return false; } if (preg_match('`\s`', $reference) > 0) { // Whitespace detected. This can never be a dNSName. return false; } $parts = explode('.', $reference); if ($parts !== array_filter($parts)) { // DNSName cannot contain two dots next to each other. return false; } // Check the first part of the name $first = array_shift($parts); if (strpos($first, '*') !== false) { // Check that the wildcard is the full part if ($first !== '*') { return false; } // Check that we have at least 3 components (including first) if (count($parts) < 2) { return false; } } // Check the remaining parts foreach ($parts as $part) { if (strpos($part, '*') !== false) { return false; } } // Nothing found, verified! return true; } /** * Match a hostname against a dNSName reference * * @param string|Stringable $host Requested host * @param string|Stringable $reference dNSName to match against * @return boolean Does the domain match? * @throws \WpOrg\Requests\Exception\InvalidArgument When either of the passed arguments is not a string or a stringable object. */ public static function match_domain($host, $reference) { if (InputValidator::is_string_or_stringable($host) === false) { throw InvalidArgument::create(1, '$host', 'string|Stringable', gettype($host)); } // Check if the reference is blocklisted first if (self::verify_reference_name($reference) !== true) { return false; } // Check for a direct match if ((string) $host === (string) $reference) { return true; } // Calculate the valid wildcard match if the host is not an IP address // Also validates that the host has 3 parts or more, as per Firefox's ruleset, // as a wildcard reference is only allowed with 3 parts or more, so the // comparison will never match if host doesn't contain 3 parts or more as well. if (ip2long($host) === false) { $parts = explode('.', $host); $parts[0] = '*'; $wildcard = implode('.', $parts); if ($wildcard === (string) $reference) { return true; } } return false; } }

ميديا

“ألعاب الواقع الافتراضي: رحلة إلى عوالم تفاعلية غامرة”

يونيو 12, 2025

1٬119 أقل من دقيقة

في هذا التقرير المصور، نأخذك في جولة بصرية داخل عالم ألعاب الواقع الافتراضي (VR)، حيث تندمج التكنولوجيا مع الترفيه لخلق تجارب لا مثيل لها. من خلال نظارات الواقع الافتراضي المتطورة، يمكن للاعبين التفاعل مع بيئات ثلاثية الأبعاد، مما يتيح لهم الانغماس الكامل في الألعاب. سنستعرض أبرز الألعاب المتاحة، مثل “Beat Saber” و”Half-Life: Alyx”، التي تقدم تجارب تفاعلية مبتكرة. كما نسلط الضوء على التحديات التي تواجه هذه التقنية، مثل التكلفة المرتفعة ومشاكل الراحة أثناء الاستخدام الطويل. انضم إلينا لاكتشاف كيف يُعيد الواقع الافتراضي تعريف مفهوم اللعب ويشكل مستقبل صناعة الألعاب.