Robert
3 years ago
parent
94364ac996
commit
3e12705ff6
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<?php |
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declare(strict_types=1); |
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namespace tts\services\sessions; |
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/** |
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* @author Robert Strutts <Robert@TryingToScale.com> |
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* @copyright Copyright (c) 2022, Robert Strutts. |
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* @license https://mit-license.org/ |
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*/ |
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class cookie_sessions_handler_exception extends \Exception {} |
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class cookie_sessions implements \SessionHandlerInterface { |
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private static int $zlib_compression_level = 4; |
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public static string $cookie_domain; |
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public static string $cookie_name = 'SES'; |
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public static string $cookie_path = '/'; |
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public static bool $cookie_secure = true; |
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public static bool $cookie_HTTP_only = true; |
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private $enc; |
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public static function set_zlib_compression_level(int $level): void { |
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self::$zlib_compression_level = ($level >= 0 && $level <= 9) ? |
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$level : 4; |
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} |
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public function __construct($enc) { |
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self::$cookie_domain = $_SERVER['SERVER_NAME'] ?? ''; |
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$this->enc = $enc; |
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} |
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private function encrypt(string & $data): void { |
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$data = $this->enc->encode("sess", $data); |
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} |
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private function decrypt(string & $data): void { |
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try { |
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$data = $this->enc->decode("sess", $data); |
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} catch (\Exception $e) { |
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$data = false; // Maybe it has no data to decode |
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} |
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} |
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private function compress(string & $data): void { |
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$data = gzdeflate($data, self::$zlib_compression_level); |
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if ($data === false) { |
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throw new \tts\services\sessions\cookie_sessions_handler_exception('Failed to compress session data'); |
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} |
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} |
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private function decompress(string & $data): void { |
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$data = gzinflate($data); |
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} |
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public function open($save_path, $session_name):bool { |
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return true; |
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} |
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public function close(): bool { |
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return true; |
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} |
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public function read($id): false|string { |
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$data = isset($_COOKIE[self::$cookie_name]) ? $_COOKIE[self::$cookie_name] : null; |
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if ($data === null) { |
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return ""; |
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} |
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$data = base64_decode($data); |
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if ($data === false) { |
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return ""; |
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} |
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$this->decrypt($data); |
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if ($data === false) { |
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return ""; |
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} |
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$this->decompress($data); |
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return ($data !== false) ? $data : ''; |
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} |
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public function write($id, $data): bool { |
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if (headers_sent($file, $line)) { |
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throw new \tts\services\sessions\cookie_sessions_handler_exception("Error headers were already sent by $file on line # $line "); |
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} |
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$this->compress($data); |
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$this->encrypt($data); |
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$data = base64_encode($data); |
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/* |
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* Google Chrome - 4096 bytes confirming to RFC. |
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* If the data is over 4000 bytes, throw an exception |
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* as web browsers only support up to 4K of Cookie Data! |
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*/ |
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if (strlen($data) > 4000) { |
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throw new \tts\services\sessions\cookie_sessions_handler_exception("Session data too big (over 4KB)"); |
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} |
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$cookie_lifetime = (int) ini_get('session.cookie_lifetime'); |
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return setcookie(self::$cookie_name, $data, $cookie_lifetime, self::$cookie_path, self::$cookie_domain, self::$cookie_secure, self::$cookie_HTTP_only); |
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} |
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public function destroy($id): bool { |
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$expiration_time = time() - 3600; |
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return setcookie(self::$cookie_name, "", $expiration_time, self::$cookie_path, self::$cookie_domain, self::$cookie_secure, self::$cookie_HTTP_only); |
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} |
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public function gc($max_lifetime): int|false { |
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return 0; |
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} |
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} |
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@ -1,7 +0,0 @@ |
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<?php
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declare(strict_types=1); |
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?> |
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<pre> |
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<?= $ex ?> |
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<?php var_dump(debug_backtrace()); ?> |
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</pre> |
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