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| 1 | <?php declare(strict_types=1); |
| 2 | /* |
| 3 | * This file is part of Aplus Framework Session Library. |
| 4 | * |
| 5 | * (c) Natan Felles <natanfelles@gmail.com> |
| 6 | * |
| 7 | * For the full copyright and license information, please view the LICENSE |
| 8 | * file that was distributed with this source code. |
| 9 | */ |
| 10 | namespace Framework\Session; |
| 11 | |
| 12 | use Framework\Session\Debug\SessionCollector; |
| 13 | use JetBrains\PhpStorm\Pure; |
| 14 | use LogicException; |
| 15 | use RuntimeException; |
| 16 | |
| 17 | /** |
| 18 | * Class Session. |
| 19 | * |
| 20 | * @package session |
| 21 | */ |
| 22 | class Session |
| 23 | { |
| 24 | /** |
| 25 | * @var array<string,mixed> |
| 26 | */ |
| 27 | protected array $options = []; |
| 28 | protected SaveHandler $saveHandler; |
| 29 | protected SessionCollector $debugCollector; |
| 30 | |
| 31 | /** |
| 32 | * Session constructor. |
| 33 | * |
| 34 | * @param array<string,int|string> $options |
| 35 | * @param SaveHandler|null $handler |
| 36 | */ |
| 37 | public function __construct(array $options = [], SaveHandler $handler = null) |
| 38 | { |
| 39 | $this->setOptions($options); |
| 40 | if ($handler) { |
| 41 | $this->saveHandler = $handler; |
| 42 | \session_set_save_handler($handler); |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | public function __destruct() |
| 47 | { |
| 48 | $this->stop(); |
| 49 | } |
| 50 | |
| 51 | public function __get(string $key) : mixed |
| 52 | { |
| 53 | return $this->get($key); |
| 54 | } |
| 55 | |
| 56 | public function __set(string $key, mixed $value) : void |
| 57 | { |
| 58 | $this->set($key, $value); |
| 59 | } |
| 60 | |
| 61 | public function __isset(string $key) : bool |
| 62 | { |
| 63 | return $this->has($key); |
| 64 | } |
| 65 | |
| 66 | public function __unset(string $key) : void |
| 67 | { |
| 68 | $this->remove($key); |
| 69 | } |
| 70 | |
| 71 | /** |
| 72 | * @see http://php.net/manual/en/session.security.ini.php |
| 73 | * |
| 74 | * @param array<string,int|string> $custom |
| 75 | */ |
| 76 | protected function setOptions(array $custom) : void |
| 77 | { |
| 78 | $serializer = \ini_get('session.serialize_handler'); |
| 79 | $serializer = $serializer === 'php' ? 'php_serialize' : $serializer; |
| 80 | $secure = (isset($_SERVER['REQUEST_SCHEME']) && $_SERVER['REQUEST_SCHEME'] === 'https') |
| 81 | || (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on'); |
| 82 | $default = [ |
| 83 | 'name' => 'session_id', |
| 84 | 'serialize_handler' => $serializer, |
| 85 | 'sid_bits_per_character' => 6, |
| 86 | 'sid_length' => 48, |
| 87 | 'cookie_domain' => '', |
| 88 | 'cookie_httponly' => 1, |
| 89 | 'cookie_lifetime' => 7200, |
| 90 | 'cookie_path' => '/', |
| 91 | 'cookie_samesite' => 'Strict', |
| 92 | 'cookie_secure' => $secure, |
| 93 | 'referer_check' => '', |
| 94 | 'use_cookies' => 1, |
| 95 | 'use_only_cookies' => 1, |
| 96 | 'use_strict_mode' => 1, |
| 97 | 'use_trans_sid' => 0, |
| 98 | // used to auto-regenerate the session id: |
| 99 | 'auto_regenerate_maxlifetime' => 0, |
| 100 | 'auto_regenerate_destroy' => true, |
| 101 | ]; |
| 102 | $this->options = $custom |
| 103 | ? \array_replace($default, $custom) |
| 104 | : $default; |
| 105 | } |
| 106 | |
| 107 | /** |
| 108 | * @param array<string,mixed> $custom |
| 109 | * |
| 110 | * @return array<string,mixed> |
| 111 | */ |
| 112 | protected function getOptions(array $custom = []) : array |
| 113 | { |
| 114 | $options = $custom |
| 115 | ? \array_replace($this->options, $custom) |
| 116 | : $this->options; |
| 117 | unset( |
| 118 | $options['auto_regenerate_maxlifetime'], |
| 119 | $options['auto_regenerate_destroy'] |
| 120 | ); |
| 121 | return $options; |
| 122 | } |
| 123 | |
| 124 | /** |
| 125 | * @param array<string,int|string> $customOptions |
| 126 | * |
| 127 | * @throws LogicException if session was already active |
| 128 | * @throws RuntimeException if session could not be started |
| 129 | * |
| 130 | * @return bool |
| 131 | */ |
| 132 | public function start(array $customOptions = []) : bool |
| 133 | { |
| 134 | if ($this->isActive()) { |
| 135 | throw new LogicException('Session was already active'); |
| 136 | } |
| 137 | if ( ! @\session_start($this->getOptions($customOptions))) { |
| 138 | throw new RuntimeException( |
| 139 | 'Session could not be started: ' . \error_get_last()['message'] |
| 140 | ); |
| 141 | } |
| 142 | $time = \time(); |
| 143 | $this->autoRegenerate($time); |
| 144 | $this->clearTemp($time); |
| 145 | $this->clearFlash(); |
| 146 | return true; |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * Make sure the session is active. |
| 151 | * |
| 152 | * If it is not active, it will start it. |
| 153 | * |
| 154 | * @throws RuntimeException if session could not be started |
| 155 | * |
| 156 | * @return bool |
| 157 | */ |
| 158 | public function activate() : bool |
| 159 | { |
| 160 | if ($this->isActive()) { |
| 161 | return true; |
| 162 | } |
| 163 | return $this->start(); |
| 164 | } |
| 165 | |
| 166 | /** |
| 167 | * Auto regenerate the session id. |
| 168 | * |
| 169 | * @param int $time |
| 170 | * |
| 171 | * @see https://owasp.org/www-community/attacks/Session_fixation |
| 172 | */ |
| 173 | protected function autoRegenerate(int $time) : void |
| 174 | { |
| 175 | $maxlifetime = (int) $this->options['auto_regenerate_maxlifetime']; |
| 176 | $isActive = $maxlifetime > 0; |
| 177 | if (($isActive && empty($_SESSION['$']['regenerated_at'])) |
| 178 | || ($isActive && $_SESSION['$']['regenerated_at'] < ($time - $maxlifetime)) |
| 179 | ) { |
| 180 | $this->regenerateId((bool) $this->options['auto_regenerate_destroy']); |
| 181 | } |
| 182 | } |
| 183 | |
| 184 | /** |
| 185 | * Clears the Flash Data. |
| 186 | */ |
| 187 | protected function clearFlash() : void |
| 188 | { |
| 189 | unset($_SESSION['$']['flash']['old']); |
| 190 | if (isset($_SESSION['$']['flash']['new'])) { |
| 191 | foreach ($_SESSION['$']['flash']['new'] as $key => $value) { |
| 192 | $_SESSION['$']['flash']['old'][$key] = $value; |
| 193 | } |
| 194 | } |
| 195 | unset($_SESSION['$']['flash']['new']); |
| 196 | if (empty($_SESSION['$']['flash'])) { |
| 197 | unset($_SESSION['$']['flash']); |
| 198 | } |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * Clears the Temp Data. |
| 203 | * |
| 204 | * @param int $time The max time to temp data survive |
| 205 | */ |
| 206 | protected function clearTemp(int $time) : void |
| 207 | { |
| 208 | if (isset($_SESSION['$']['temp'])) { |
| 209 | foreach ($_SESSION['$']['temp'] as $key => $value) { |
| 210 | if ($value['ttl'] < $time) { |
| 211 | unset($_SESSION['$']['temp'][$key]); |
| 212 | } |
| 213 | } |
| 214 | } |
| 215 | if (empty($_SESSION['$']['temp'])) { |
| 216 | unset($_SESSION['$']['temp']); |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | /** |
| 221 | * Tells if sessions are enabled, and one exists. |
| 222 | * |
| 223 | * @return bool |
| 224 | */ |
| 225 | public function isActive() : bool |
| 226 | { |
| 227 | return \session_status() === \PHP_SESSION_ACTIVE; |
| 228 | } |
| 229 | |
| 230 | /** |
| 231 | * Destroys all data registered to a session. |
| 232 | * |
| 233 | * @return bool true on success or false on failure |
| 234 | */ |
| 235 | public function destroy() : bool |
| 236 | { |
| 237 | if ($this->isActive()) { |
| 238 | $destroyed = \session_destroy(); |
| 239 | } |
| 240 | unset($_SESSION); |
| 241 | return $destroyed ?? true; |
| 242 | } |
| 243 | |
| 244 | /** |
| 245 | * Sets a Cookie with the session name to be destroyed in the user-agent. |
| 246 | * |
| 247 | * @throws RuntimeException If it could not get the session name |
| 248 | * |
| 249 | * @return bool True if the Set-Cookie header was set to invalidate the |
| 250 | * session cookie, false if output exists |
| 251 | */ |
| 252 | public function destroyCookie() : bool |
| 253 | { |
| 254 | $name = \session_name(); |
| 255 | if ($name === false) { |
| 256 | throw new RuntimeException('Could not get the session name'); |
| 257 | } |
| 258 | $params = \session_get_cookie_params(); |
| 259 | return \setcookie($name, '', [ |
| 260 | 'expires' => 0, |
| 261 | 'path' => $params['path'], |
| 262 | 'domain' => $params['domain'], |
| 263 | 'secure' => $params['secure'], |
| 264 | 'httponly' => $params['httponly'], |
| 265 | 'samesite' => $params['samesite'], |
| 266 | ]); |
| 267 | } |
| 268 | |
| 269 | /** |
| 270 | * Write session data and end session. |
| 271 | * |
| 272 | * @return bool returns true on success or false on failure |
| 273 | */ |
| 274 | public function stop() : bool |
| 275 | { |
| 276 | if ($this->isActive()) { |
| 277 | $closed = \session_write_close(); |
| 278 | } |
| 279 | return $closed ?? true; |
| 280 | } |
| 281 | |
| 282 | /** |
| 283 | * Discard session data changes and end session. |
| 284 | * |
| 285 | * @return bool returns true on success or false on failure |
| 286 | */ |
| 287 | public function abort() : bool |
| 288 | { |
| 289 | if ($this->isActive()) { |
| 290 | $aborted = \session_abort(); |
| 291 | } |
| 292 | return $aborted ?? true; |
| 293 | } |
| 294 | |
| 295 | /** |
| 296 | * Tells if the session has an item. |
| 297 | * |
| 298 | * @param string $key The item key name |
| 299 | * |
| 300 | * @return bool True if it has, otherwise false |
| 301 | */ |
| 302 | #[Pure] |
| 303 | public function has(string $key) : bool |
| 304 | { |
| 305 | return isset($_SESSION[$key]); |
| 306 | } |
| 307 | |
| 308 | /** |
| 309 | * Gets one session item. |
| 310 | * |
| 311 | * @param string $key The item key name |
| 312 | * |
| 313 | * @return mixed The item value or null if no set |
| 314 | */ |
| 315 | #[Pure] |
| 316 | public function get(string $key) : mixed |
| 317 | { |
| 318 | return $_SESSION[$key] ?? null; |
| 319 | } |
| 320 | |
| 321 | /** |
| 322 | * Get all session items. |
| 323 | * |
| 324 | * @return array<mixed> The value of the $_SESSION global |
| 325 | */ |
| 326 | #[Pure] |
| 327 | public function getAll() : array |
| 328 | { |
| 329 | return $_SESSION; |
| 330 | } |
| 331 | |
| 332 | /** |
| 333 | * Get multiple session items. |
| 334 | * |
| 335 | * @param array<string> $keys An array of key item names |
| 336 | * |
| 337 | * @return array<string,mixed> An associative array with items keys and |
| 338 | * values. Item not set will return as null. |
| 339 | */ |
| 340 | #[Pure] |
| 341 | public function getMulti(array $keys) : array |
| 342 | { |
| 343 | $items = []; |
| 344 | foreach ($keys as $key) { |
| 345 | $items[$key] = $this->get($key); |
| 346 | } |
| 347 | return $items; |
| 348 | } |
| 349 | |
| 350 | /** |
| 351 | * Set a session item. |
| 352 | * |
| 353 | * @param string $key The item key name |
| 354 | * @param mixed $value The item value |
| 355 | * |
| 356 | * @rerun static |
| 357 | */ |
| 358 | public function set(string $key, mixed $value) : static |
| 359 | { |
| 360 | $_SESSION[$key] = $value; |
| 361 | return $this; |
| 362 | } |
| 363 | |
| 364 | /** |
| 365 | * Set multiple session items. |
| 366 | * |
| 367 | * @param array<string,mixed> $items An associative array of items keys and |
| 368 | * values |
| 369 | * |
| 370 | * @rerun static |
| 371 | */ |
| 372 | public function setMulti(array $items) : static |
| 373 | { |
| 374 | foreach ($items as $key => $value) { |
| 375 | $this->set($key, $value); |
| 376 | } |
| 377 | return $this; |
| 378 | } |
| 379 | |
| 380 | /** |
| 381 | * Remove (unset) a session item. |
| 382 | * |
| 383 | * @param string $key The item key name |
| 384 | * |
| 385 | * @rerun static |
| 386 | */ |
| 387 | public function remove(string $key) : static |
| 388 | { |
| 389 | unset($_SESSION[$key]); |
| 390 | return $this; |
| 391 | } |
| 392 | |
| 393 | /** |
| 394 | * Remove (unset) multiple session items. |
| 395 | * |
| 396 | * @param array<string> $keys A list of items keys names |
| 397 | * |
| 398 | * @rerun static |
| 399 | */ |
| 400 | public function removeMulti(array $keys) : static |
| 401 | { |
| 402 | foreach ($keys as $key) { |
| 403 | $this->remove($key); |
| 404 | } |
| 405 | return $this; |
| 406 | } |
| 407 | |
| 408 | /** |
| 409 | * Remove (unset) all session items. |
| 410 | * |
| 411 | * @rerun static |
| 412 | */ |
| 413 | public function removeAll() : static |
| 414 | { |
| 415 | @\session_unset(); |
| 416 | $_SESSION = []; |
| 417 | return $this; |
| 418 | } |
| 419 | |
| 420 | /** |
| 421 | * Update the current session id with a newly generated one. |
| 422 | * |
| 423 | * @param bool $deleteOldSession Whether to delete the old associated session item or not |
| 424 | * |
| 425 | * @return bool |
| 426 | */ |
| 427 | public function regenerateId(bool $deleteOldSession = false) : bool |
| 428 | { |
| 429 | $regenerated = \session_regenerate_id($deleteOldSession); |
| 430 | if ($regenerated) { |
| 431 | $_SESSION['$']['regenerated_at'] = \time(); |
| 432 | } |
| 433 | return $regenerated; |
| 434 | } |
| 435 | |
| 436 | /** |
| 437 | * Re-initialize session array with original values. |
| 438 | * |
| 439 | * @return bool true if the session was successfully reinitialized or false on failure |
| 440 | */ |
| 441 | public function reset() : bool |
| 442 | { |
| 443 | return \session_reset(); |
| 444 | } |
| 445 | |
| 446 | /** |
| 447 | * Get a Flash Data item. |
| 448 | * |
| 449 | * @param string $key The Flash item key name |
| 450 | * |
| 451 | * @return mixed The item value or null if not exists |
| 452 | */ |
| 453 | #[Pure] |
| 454 | public function getFlash(string $key) : mixed |
| 455 | { |
| 456 | return $_SESSION['$']['flash']['new'][$key] |
| 457 | ?? $_SESSION['$']['flash']['old'][$key] |
| 458 | ?? null; |
| 459 | } |
| 460 | |
| 461 | /** |
| 462 | * Set a Flash Data item, available only in the next time the session is started. |
| 463 | * |
| 464 | * @param string $key The Flash Data item key name |
| 465 | * @param mixed $value The item value |
| 466 | * |
| 467 | * @rerun static |
| 468 | */ |
| 469 | public function setFlash(string $key, mixed $value) : static |
| 470 | { |
| 471 | $_SESSION['$']['flash']['new'][$key] = $value; |
| 472 | return $this; |
| 473 | } |
| 474 | |
| 475 | /** |
| 476 | * Remove a Flash Data item. |
| 477 | * |
| 478 | * @param string $key The item key name |
| 479 | * |
| 480 | * @rerun static |
| 481 | */ |
| 482 | public function removeFlash(string $key) : static |
| 483 | { |
| 484 | unset( |
| 485 | $_SESSION['$']['flash']['old'][$key], |
| 486 | $_SESSION['$']['flash']['new'][$key] |
| 487 | ); |
| 488 | return $this; |
| 489 | } |
| 490 | |
| 491 | /** |
| 492 | * Get a Temp Data item. |
| 493 | * |
| 494 | * @param string $key The item key name |
| 495 | * |
| 496 | * @return mixed The item value or null if it is expired or not set |
| 497 | */ |
| 498 | public function getTemp(string $key) : mixed |
| 499 | { |
| 500 | if (isset($_SESSION['$']['temp'][$key])) { |
| 501 | if ($_SESSION['$']['temp'][$key]['ttl'] > \time()) { |
| 502 | return $_SESSION['$']['temp'][$key]['data']; |
| 503 | } |
| 504 | unset($_SESSION['$']['temp'][$key]); |
| 505 | } |
| 506 | return null; |
| 507 | } |
| 508 | |
| 509 | /** |
| 510 | * Set a Temp Data item. |
| 511 | * |
| 512 | * @param string $key The item key name |
| 513 | * @param mixed $value The item value |
| 514 | * @param int $ttl The Time-To-Live of the item, in seconds |
| 515 | * |
| 516 | * @rerun static |
| 517 | */ |
| 518 | public function setTemp(string $key, mixed $value, int $ttl = 60) : static |
| 519 | { |
| 520 | $_SESSION['$']['temp'][$key] = [ |
| 521 | 'ttl' => \time() + $ttl, |
| 522 | 'data' => $value, |
| 523 | ]; |
| 524 | return $this; |
| 525 | } |
| 526 | |
| 527 | /** |
| 528 | * Remove (unset) a Temp Data item. |
| 529 | * |
| 530 | * @param string $key The item key name |
| 531 | * |
| 532 | * @rerun static |
| 533 | */ |
| 534 | public function removeTemp(string $key) : static |
| 535 | { |
| 536 | unset($_SESSION['$']['temp'][$key]); |
| 537 | return $this; |
| 538 | } |
| 539 | |
| 540 | /** |
| 541 | * Get/Set the session id. |
| 542 | * |
| 543 | * @param string|null $newId [optional] The new session id |
| 544 | * |
| 545 | * @throws LogicException when trying to set a new id and the session is active |
| 546 | * |
| 547 | * @return false|string The old session id or false on failure. Note: If a |
| 548 | * $newId is set, it is accepted but not validated. When session_start is |
| 549 | * called, the id is only used if it is valid |
| 550 | */ |
| 551 | public function id(string $newId = null) : string | false |
| 552 | { |
| 553 | if ($newId !== null && $this->isActive()) { |
| 554 | throw new LogicException( |
| 555 | 'Session ID cannot be changed when a session is active' |
| 556 | ); |
| 557 | } |
| 558 | return \session_id($newId); |
| 559 | } |
| 560 | |
| 561 | /** |
| 562 | * Perform session data garbage collection. |
| 563 | * |
| 564 | * If return false, use {@see error_get_last()} to get error details. |
| 565 | * |
| 566 | * @return false|int Returns the number of deleted session data for success, |
| 567 | * false for failure |
| 568 | */ |
| 569 | public function gc() : int | false |
| 570 | { |
| 571 | return @\session_gc(); |
| 572 | } |
| 573 | |
| 574 | public function setDebugCollector(SessionCollector $collector) : static |
| 575 | { |
| 576 | $this->debugCollector = $collector; |
| 577 | $this->debugCollector->setSession($this)->setOptions($this->options); |
| 578 | if (isset($this->saveHandler)) { |
| 579 | $this->debugCollector->setSaveHandler($this->saveHandler); |
| 580 | } |
| 581 | return $this; |
| 582 | } |
| 583 | } |