o2system /
session
| 1 | <?php |
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| 2 | /** |
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| 3 | * This file is part of the O2System Framework package. |
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| 4 | * |
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| 5 | * For the full copyright and license information, please view the LICENSE |
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| 6 | * file that was distributed with this source code. |
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| 7 | * |
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| 8 | * @author Steeve Andrian Salim |
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| 9 | * @copyright Copyright (c) Steeve Andrian Salim |
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| 10 | */ |
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| 11 | |||
| 12 | // ------------------------------------------------------------------------ |
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| 13 | |||
| 14 | namespace O2System\Session\Abstracts; |
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| 15 | |||
| 16 | // ------------------------------------------------------------------------ |
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| 17 | |||
| 18 | use O2System\Kernel\DataStructures\Config; |
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| 19 | use Psr\Log\LoggerAwareInterface; |
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| 20 | use Psr\Log\LoggerInterface; |
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| 21 | |||
| 22 | /** |
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| 23 | * Class AbstractHandler |
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| 24 | * |
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| 25 | * Base class of session platform handlers. |
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| 26 | * |
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| 27 | * @package O2System\Session\Handler |
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| 28 | */ |
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| 29 | abstract class AbstractHandler implements \SessionHandlerInterface, LoggerAwareInterface |
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| 30 | {
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| 31 | /** |
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| 32 | * Session Handler Platform Name |
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| 33 | * |
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| 34 | * @var string |
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| 35 | */ |
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| 36 | protected $platform; |
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| 37 | |||
| 38 | /** |
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| 39 | * Session Handler Config |
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| 40 | * |
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| 41 | * @var Config |
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| 42 | */ |
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| 43 | protected $config; |
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| 44 | |||
| 45 | /** |
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| 46 | * Session Cache Key Prefix |
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| 47 | * |
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| 48 | * @var string |
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| 49 | */ |
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| 50 | protected $prefixKey = 'o2session:'; |
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| 51 | |||
| 52 | /** |
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| 53 | * Session Lock Key |
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| 54 | * |
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| 55 | * @var string |
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| 56 | */ |
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| 57 | protected $lockKey; |
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| 58 | |||
| 59 | /** |
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| 60 | * Session Data Fingerprint |
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| 61 | * |
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| 62 | * @var bool |
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| 63 | */ |
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| 64 | protected $fingerprint; |
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| 65 | |||
| 66 | /** |
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| 67 | * Session Is Locked Flag |
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| 68 | * |
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| 69 | * @var bool |
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| 70 | */ |
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| 71 | protected $isLocked = false; |
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| 72 | |||
| 73 | /** |
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| 74 | * Current session ID |
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| 75 | * |
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| 76 | * @var string |
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| 77 | */ |
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| 78 | protected $sessionId; |
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| 79 | |||
| 80 | /** |
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| 81 | * Success and failure return values |
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| 82 | * |
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| 83 | * Necessary due to a bug in all PHP 5 versions where return values |
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| 84 | * from userspace handlers are not handled properly. PHP 7 fixes the |
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| 85 | * bug, so we need to return different values depending on the version. |
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| 86 | * |
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| 87 | * @see https://wiki.php.net/rfc/session.user.return-value |
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| 88 | * @var mixed |
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| 89 | */ |
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| 90 | protected $success, $failure; |
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| 91 | |||
| 92 | /** |
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| 93 | * Logger Instance |
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| 94 | * |
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| 95 | * @var LoggerInterface |
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| 96 | */ |
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| 97 | protected $logger; |
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| 98 | |||
| 99 | //-------------------------------------------------------------------- |
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| 100 | |||
| 101 | /** |
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| 102 | * AbstractHandler::__construct |
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| 103 | * |
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| 104 | * @param \O2System\Kernel\DataStructures\Config $config |
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| 105 | * |
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| 106 | * @return AbstractHandler |
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| 107 | */ |
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| 108 | public function __construct(Config $config) |
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| 109 | {
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| 110 | $this->config = $config; |
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| 111 | $this->config->offsetUnset('handler');
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| 112 | $this->setPrefixKey($this->config[ 'name' ]); |
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| 113 | |||
| 114 | if (is_php('7')) {
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| 115 | $this->success = true; |
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| 116 | $this->failure = false; |
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| 117 | } else {
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| 118 | $this->success = 0; |
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| 119 | $this->failure = -1; |
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| 120 | } |
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| 121 | } |
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| 122 | |||
| 123 | //-------------------------------------------------------------------- |
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| 124 | |||
| 125 | /** |
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| 126 | * AbstractHandler::setPrefixKey |
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| 127 | * |
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| 128 | * Sets cache prefix key |
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| 129 | * |
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| 130 | * @param $prefixKey |
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| 131 | */ |
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| 132 | public function setPrefixKey($prefixKey) |
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| 133 | {
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| 134 | $this->prefixKey = rtrim($prefixKey, ':') . ':'; |
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| 135 | } |
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| 136 | |||
| 137 | // ------------------------------------------------------------------------ |
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| 138 | |||
| 139 | /** |
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| 140 | * AbstractHandler::setLogger |
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| 141 | * |
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| 142 | * Sets a logger instance on the object |
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| 143 | * |
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| 144 | * @param LoggerInterface $logger |
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| 145 | * |
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| 146 | * @return void |
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| 147 | */ |
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| 148 | public function setLogger(LoggerInterface $logger) |
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| 149 | {
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| 150 | $this->logger =& $logger; |
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| 151 | } |
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| 152 | |||
| 153 | /** |
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| 154 | * AbstractHandler::getPlatform |
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| 155 | * |
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| 156 | * Get Current Platform |
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| 157 | * |
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| 158 | * @return string |
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| 159 | */ |
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| 160 | public function getPlatform() |
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| 161 | {
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| 162 | return $this->platform; |
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| 163 | } |
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| 164 | |||
| 165 | //-------------------------------------------------------------------- |
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| 166 | |||
| 167 | /** |
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| 168 | * AbstractHandler::open |
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| 169 | * |
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| 170 | * Initialize session |
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| 171 | * |
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| 172 | * @link http://php.net/manual/en/sessionhandlerinterface.open.php |
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| 173 | * |
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| 174 | * @param string $savePath The path where to store/retrieve the session. |
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| 175 | * @param string $name The session name. |
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| 176 | * |
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| 177 | * @return bool <p> |
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| 178 | * The return value (usually TRUE on success, FALSE on failure). |
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| 179 | * Note this value is returned internally to PHP for processing. |
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| 180 | * </p> |
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| 181 | * @since 5.4.0 |
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| 182 | */ |
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| 183 | abstract public function open($savePath, $name); |
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| 184 | |||
| 185 | /** |
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| 186 | * AbstractHandler::close |
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| 187 | * |
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| 188 | * Close the session |
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| 189 | * |
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| 190 | * @link http://php.net/manual/en/sessionhandlerinterface.close.php |
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| 191 | * @return bool <p> |
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| 192 | * The return value (usually TRUE on success, FALSE on failure). |
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| 193 | * Note this value is returned internally to PHP for processing. |
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| 194 | * </p> |
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| 195 | * @since 5.4.0 |
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| 196 | */ |
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| 197 | abstract public function close(); |
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| 198 | |||
| 199 | /** |
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| 200 | * AbstractHandler::destroy |
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| 201 | * |
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| 202 | * Destroy a session |
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| 203 | * |
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| 204 | * @link http://php.net/manual/en/sessionhandlerinterface.destroy.php |
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| 205 | * |
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| 206 | * @param string $sessionId The session ID being destroyed. |
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| 207 | * |
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| 208 | * @return bool <p> |
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| 209 | * The return value (usually TRUE on success, FALSE on failure). |
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| 210 | * Note this value is returned internally to PHP for processing. |
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| 211 | * </p> |
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| 212 | * @since 5.4.0 |
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| 213 | */ |
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| 214 | abstract public function destroy($sessionId); |
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| 215 | |||
| 216 | /** |
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| 217 | * AbstractHandler::gc |
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| 218 | * |
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| 219 | * Cleanup old sessions |
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| 220 | * |
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| 221 | * @link http://php.net/manual/en/sessionhandlerinterface.gc.php |
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| 222 | * |
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| 223 | * @param int $maxlifetime <p> |
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| 224 | * Sessions that have not updated for |
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| 225 | * the last maxlifetime seconds will be removed. |
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| 226 | * </p> |
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| 227 | * |
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| 228 | * @return bool <p> |
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| 229 | * The return value (usually TRUE on success, FALSE on failure). |
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| 230 | * Note this value is returned internally to PHP for processing. |
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| 231 | * </p> |
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| 232 | * @since 5.4.0 |
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| 233 | */ |
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| 234 | abstract public function gc($maxlifetime); |
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| 235 | |||
| 236 | /** |
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| 237 | * AbstractHandler::read |
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| 238 | * |
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| 239 | * Read session data |
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| 240 | * |
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| 241 | * @link http://php.net/manual/en/sessionhandlerinterface.read.php |
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| 242 | * |
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| 243 | * @param string $sessionId The session id to read data for. |
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| 244 | * |
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| 245 | * @return string <p> |
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| 246 | * Returns an encoded string of the read data. |
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| 247 | * If nothing was read, it must return an empty string. |
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| 248 | * Note this value is returned internally to PHP for processing. |
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| 249 | * </p> |
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| 250 | * @since 5.4.0 |
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| 251 | */ |
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| 252 | abstract public function read($sessionId); |
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| 253 | |||
| 254 | /** |
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| 255 | * AbstractHandler::write |
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| 256 | * |
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| 257 | * Write session data |
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| 258 | * |
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| 259 | * @link http://php.net/manual/en/sessionhandlerinterface.write.php |
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| 260 | * |
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| 261 | * @param string $sessionId The session id. |
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| 262 | * @param string $sessionData <p> |
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| 263 | * The encoded session data. This data is the |
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| 264 | * result of the PHP internally encoding |
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| 265 | * the $_SESSION superglobal to a serialized |
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| 266 | * string and passing it as this parameter. |
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| 267 | * Please note sessions use an alternative serialization method. |
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| 268 | * </p> |
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| 269 | * |
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| 270 | * @return bool <p> |
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| 271 | * The return value (usually TRUE on success, FALSE on failure). |
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| 272 | * Note this value is returned internally to PHP for processing. |
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| 273 | * </p> |
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| 274 | * @since 5.4.0 |
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| 275 | */ |
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| 276 | abstract public function write($sessionId, $sessionData); |
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| 277 | |||
| 278 | /** |
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| 279 | * AbstractHandler::isSupported |
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| 280 | * |
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| 281 | * Checks if this platform is supported on this system. |
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| 282 | * |
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| 283 | * @return bool Returns FALSE if not supported. |
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| 284 | */ |
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| 285 | abstract public function isSupported(); |
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| 286 | |||
| 287 | //-------------------------------------------------------------------- |
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| 288 | |||
| 289 | /** |
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| 290 | * AbstractHandler::_lockSession |
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| 291 | * |
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| 292 | * A dummy method allowing drivers with no locking functionality |
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| 293 | * (databases other than PostgreSQL and MySQL) to act as if they |
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| 294 | * do acquire a lock. |
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| 295 | * |
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| 296 | * @param string $sessionId |
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| 297 | * |
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| 298 | * @return bool |
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| 299 | */ |
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| 300 | protected function lockSession($sessionId) |
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| 301 | {
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| 302 | $this->isLocked = true; |
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| 303 | |||
| 304 | return true; |
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| 305 | } |
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| 306 | |||
| 307 | //-------------------------------------------------------------------- |
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| 308 | |||
| 309 | /** |
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| 310 | * AbstractHandler::_lockRelease |
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| 311 | * |
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| 312 | * Releases the lock, if any. |
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| 313 | * |
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| 314 | * @return bool |
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| 315 | */ |
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| 316 | protected function lockRelease() |
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| 317 | {
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| 318 | $this->isLocked = false; |
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| 319 | |||
| 320 | return true; |
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| 321 | } |
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| 322 | |||
| 323 | //-------------------------------------------------------------------- |
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| 324 | |||
| 325 | /** |
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| 326 | * AbstractHandler::_destroyCookie |
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| 327 | * |
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| 328 | * Internal method to force removal of a cookie by the client |
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| 329 | * when session_destroy() is called. |
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| 330 | * |
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| 331 | * @return bool |
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| 332 | */ |
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| 333 | protected function destroyCookie() |
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| 334 | {
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| 335 | return setcookie( |
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| 336 | $this->config[ 'name' ], |
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| 337 | null, |
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| 338 | 1, |
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| 339 | $this->config[ 'cookie' ]->path, |
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| 340 | '.' . ltrim($this->config[ 'cookie' ]->domain, '.'), |
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| 341 | $this->config[ 'cookie' ]->secure, |
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| 342 | true |
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| 343 | ); |
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| 344 | } |
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| 345 | } |
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