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| 1 | <?php |
| 2 | /** |
| 3 | * Pop PHP Framework (http://www.popphp.org/) |
| 4 | * |
| 5 | * @link https://github.com/popphp/popphp-framework |
| 6 | * @author Nick Sagona, III <dev@nolainteractive.com> |
| 7 | * @copyright Copyright (c) 2009-2024 NOLA Interactive, LLC. (http://www.nolainteractive.com) |
| 8 | * @license http://www.popphp.org/license New BSD License |
| 9 | */ |
| 10 | |
| 11 | /** |
| 12 | * @namespace |
| 13 | */ |
| 14 | namespace Pop\Session; |
| 15 | |
| 16 | /** |
| 17 | * Session class |
| 18 | * |
| 19 | * @category Pop |
| 20 | * @package Pop\Session |
| 21 | * @author Nick Sagona, III <dev@nolainteractive.com> |
| 22 | * @copyright Copyright (c) 2009-2024 NOLA Interactive, LLC. (http://www.nolainteractive.com) |
| 23 | * @license http://www.popphp.org/license New BSD License |
| 24 | * @version 4.0.0 |
| 25 | */ |
| 26 | class Session extends AbstractSession |
| 27 | { |
| 28 | |
| 29 | /** |
| 30 | * Instance of the session |
| 31 | * @var ?object |
| 32 | */ |
| 33 | private static ?object $instance = null; |
| 34 | |
| 35 | /** |
| 36 | * Session Name |
| 37 | * @var ?string |
| 38 | */ |
| 39 | private ?string $sessionName = null; |
| 40 | |
| 41 | /** |
| 42 | * Session ID |
| 43 | * @var ?string |
| 44 | */ |
| 45 | private ?string $sessionId = null; |
| 46 | |
| 47 | /** |
| 48 | * Constructor |
| 49 | * |
| 50 | * @param array $options |
| 51 | * |
| 52 | * Private method to instantiate the session object |
| 53 | */ |
| 54 | private function __construct(array $options = []) |
| 55 | { |
| 56 | // Start a session and set the session id. |
| 57 | if (session_id() == '') { |
| 58 | if (!empty($options)) { |
| 59 | $sessionParams = session_get_cookie_params(); |
| 60 | $lifetime = $options['lifetime'] ?? $sessionParams['lifetime']; |
| 61 | $path = $options['path'] ?? $sessionParams['lifetime']; |
| 62 | $domain = $options['domain'] ?? $sessionParams['domain']; |
| 63 | $secure = $options['secure'] ?? $sessionParams['secure']; |
| 64 | $httponly = $options['httponly'] ?? $sessionParams['httponly']; |
| 65 | $sameSite = $options['samesite'] ?? $sessionParams['samesite']; |
| 66 | |
| 67 | session_set_cookie_params([ |
| 68 | 'lifetime' => $lifetime, |
| 69 | 'path' => $path, |
| 70 | 'domain' => $domain, |
| 71 | 'secure' => $secure, |
| 72 | 'httponly' => $httponly, |
| 73 | 'samesite' => $sameSite |
| 74 | ]); |
| 75 | } |
| 76 | session_start(); |
| 77 | $this->sessionId = session_id(); |
| 78 | $this->sessionName = session_name(); |
| 79 | $this->init(); |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | /** |
| 84 | * Determine whether or not an instance of the session object exists already, |
| 85 | * and instantiate the object if it does not exist. |
| 86 | * |
| 87 | * @param array $options |
| 88 | * @return Session |
| 89 | */ |
| 90 | public static function getInstance(array $options = []): Session |
| 91 | { |
| 92 | if (null === self::$instance) { |
| 93 | self::$instance = new Session($options); |
| 94 | } |
| 95 | |
| 96 | return self::$instance; |
| 97 | } |
| 98 | |
| 99 | /** |
| 100 | * Return the current the session name |
| 101 | * |
| 102 | * @return string |
| 103 | */ |
| 104 | public function getName(): string |
| 105 | { |
| 106 | return $this->sessionName; |
| 107 | } |
| 108 | |
| 109 | /** |
| 110 | * Return the current the session id |
| 111 | * |
| 112 | * @return string |
| 113 | */ |
| 114 | public function getId(): string |
| 115 | { |
| 116 | return $this->sessionId; |
| 117 | } |
| 118 | |
| 119 | /** |
| 120 | * Regenerate the session id |
| 121 | * |
| 122 | * @param bool $deleteOldSession |
| 123 | * @return void |
| 124 | */ |
| 125 | public function regenerateId(bool $deleteOldSession = true): void |
| 126 | { |
| 127 | session_regenerate_id($deleteOldSession); |
| 128 | $this->sessionId = session_id(); |
| 129 | $this->sessionName = session_name(); |
| 130 | } |
| 131 | |
| 132 | /** |
| 133 | * Init the session |
| 134 | * |
| 135 | * @return void |
| 136 | */ |
| 137 | private function init(): void |
| 138 | { |
| 139 | if (!isset($_SESSION['_POP_SESSION_'])) { |
| 140 | $_SESSION['_POP_SESSION_'] = [ |
| 141 | 'requests' => [], |
| 142 | 'expirations' => [] |
| 143 | ]; |
| 144 | } else if (!isset($_SESSION['_POP_SESSION_']['requests'])) { |
| 145 | $_SESSION['_POP_SESSION_']['requests'] = []; |
| 146 | $_SESSION['_POP_SESSION_']['expirations'] = []; |
| 147 | } else { |
| 148 | $this->checkRequests(); |
| 149 | $this->checkExpirations(); |
| 150 | } |
| 151 | } |
| 152 | |
| 153 | /** |
| 154 | * Destroy the session |
| 155 | * |
| 156 | * @return void |
| 157 | */ |
| 158 | public function kill(): void |
| 159 | { |
| 160 | if (!empty($this->sessionName) && !empty($this->sessionId) && |
| 161 | isset($_COOKIE[$this->sessionName]) && ($_COOKIE[$this->sessionName] == $this->sessionId)) { |
| 162 | setcookie($this->sessionName, $this->sessionId, time() - 3600); |
| 163 | } |
| 164 | |
| 165 | $_SESSION = null; |
| 166 | session_unset(); |
| 167 | session_destroy(); |
| 168 | self::$instance = null; |
| 169 | $this->sessionId = null; |
| 170 | $this->sessionName = null; |
| 171 | } |
| 172 | |
| 173 | /** |
| 174 | * Set a time-based value |
| 175 | * |
| 176 | * @param string $key |
| 177 | * @param mixed $value |
| 178 | * @param int $expire |
| 179 | * @return Session |
| 180 | */ |
| 181 | public function setTimedValue(string $key, mixed $value, int $expire = 300): Session |
| 182 | { |
| 183 | $_SESSION[$key] = $value; |
| 184 | $_SESSION['_POP_SESSION_']['expirations'][$key] = time() + (int)$expire; |
| 185 | return $this; |
| 186 | } |
| 187 | |
| 188 | /** |
| 189 | * Set a request-based value |
| 190 | * |
| 191 | * @param string $key |
| 192 | * @param mixed $value |
| 193 | * @param int $hops |
| 194 | * @return Session |
| 195 | */ |
| 196 | public function setRequestValue(string $key, mixed $value, int $hops = 1): Session |
| 197 | { |
| 198 | $_SESSION[$key] = $value; |
| 199 | $_SESSION['_POP_SESSION_']['requests'][$key] = [ |
| 200 | 'current' => 0, |
| 201 | 'limit' => (int)$hops |
| 202 | ]; |
| 203 | return $this; |
| 204 | } |
| 205 | |
| 206 | /** |
| 207 | * Check the request-based session value |
| 208 | * |
| 209 | * @return void |
| 210 | */ |
| 211 | private function checkRequest($key): void |
| 212 | { |
| 213 | if (isset($_SESSION['_POP_SESSION_']['requests'][$key])) { |
| 214 | $_SESSION['_POP_SESSION_']['requests'][$key]['current']++; |
| 215 | $current = $_SESSION['_POP_SESSION_']['requests'][$key]['current']; |
| 216 | $limit = $_SESSION['_POP_SESSION_']['requests'][$key]['limit']; |
| 217 | if ($current > $limit) { |
| 218 | unset($_SESSION[$key]); |
| 219 | unset($_SESSION['_POP_SESSION_']['requests'][$key]); |
| 220 | } |
| 221 | } |
| 222 | } |
| 223 | |
| 224 | /** |
| 225 | * Check the request-based session values |
| 226 | * |
| 227 | * @return void |
| 228 | */ |
| 229 | private function checkRequests(): void |
| 230 | { |
| 231 | foreach ($_SESSION as $key => $value) { |
| 232 | $this->checkRequest($key); |
| 233 | } |
| 234 | } |
| 235 | |
| 236 | /** |
| 237 | * Check the time-based session value |
| 238 | * |
| 239 | * @return void |
| 240 | */ |
| 241 | private function checkExpiration($key): void |
| 242 | { |
| 243 | if (isset($_SESSION['_POP_SESSION_']['expirations'][$key]) && |
| 244 | (time() > $_SESSION['_POP_SESSION_']['expirations'][$key])) { |
| 245 | unset($_SESSION[$key]); |
| 246 | unset($_SESSION['_POP_SESSION_']['expirations'][$key]); |
| 247 | } |
| 248 | } |
| 249 | |
| 250 | /** |
| 251 | * Check the time-based session values |
| 252 | * |
| 253 | * @return void |
| 254 | */ |
| 255 | private function checkExpirations(): void |
| 256 | { |
| 257 | foreach ($_SESSION as $key => $value) { |
| 258 | $this->checkExpiration($key); |
| 259 | } |
| 260 | } |
| 261 | |
| 262 | /** |
| 263 | * Get the session values as an array |
| 264 | * |
| 265 | * @return array |
| 266 | */ |
| 267 | public function toArray(): array |
| 268 | { |
| 269 | $session = $_SESSION; |
| 270 | |
| 271 | if (isset($session['_POP_SESSION_'])) { |
| 272 | unset($session['_POP_SESSION_']); |
| 273 | } |
| 274 | |
| 275 | return $session; |
| 276 | } |
| 277 | |
| 278 | /** |
| 279 | * Set a property in the session object that is linked to the $_SESSION global variable |
| 280 | * |
| 281 | * @param string $name |
| 282 | * @param mixed $value |
| 283 | * @throws Exception |
| 284 | * @return void |
| 285 | */ |
| 286 | public function __set(string $name, mixed $value): void |
| 287 | { |
| 288 | if ($name == '_POP_SESSION_') { |
| 289 | throw new Exception("Error: Cannot use the reserved name '_POP_SESSION_'."); |
| 290 | } |
| 291 | $_SESSION[$name] = $value; |
| 292 | } |
| 293 | |
| 294 | /** |
| 295 | * Get method to return the value of the $_SESSION global variable |
| 296 | * |
| 297 | * @param string $name |
| 298 | * @return mixed |
| 299 | */ |
| 300 | public function __get(string $name): mixed |
| 301 | { |
| 302 | return (($name !== '_POP_SESSION_') && isset($_SESSION[$name])) ? $_SESSION[$name] : null; |
| 303 | } |
| 304 | |
| 305 | /** |
| 306 | * Return the isset value of the $_SESSION global variable |
| 307 | * |
| 308 | * @param string $name |
| 309 | * @return bool |
| 310 | */ |
| 311 | public function __isset(string $name): bool |
| 312 | { |
| 313 | return (($name !== '_POP_SESSION_') && isset($_SESSION[$name])); |
| 314 | } |
| 315 | |
| 316 | /** |
| 317 | * Unset the $_SESSION global variable |
| 318 | * |
| 319 | * @param string $name |
| 320 | * @throws Exception |
| 321 | * @return void |
| 322 | */ |
| 323 | public function __unset(string $name): void |
| 324 | { |
| 325 | if ($name == '_POP_SESSION_') { |
| 326 | throw new Exception("Error: Cannot use the reserved name '_POP_SESSION_'."); |
| 327 | } |
| 328 | |
| 329 | $_SESSION[$name] = null; |
| 330 | unset($_SESSION[$name]); |
| 331 | } |
| 332 | |
| 333 | } |