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| __construct | |
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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\ConfirmEdit\Store; |
| 4 | |
| 5 | use BadMethodCallException; |
| 6 | use MediaWiki\Config\ConfigException; |
| 7 | use MediaWiki\MediaWikiServices; |
| 8 | |
| 9 | abstract class CaptchaStore { |
| 10 | /** |
| 11 | * Store the correct answer for a given captcha |
| 12 | * @param string $index |
| 13 | * @param array $info the captcha result |
| 14 | */ |
| 15 | abstract public function store( $index, $info ); |
| 16 | |
| 17 | /** |
| 18 | * Retrieve the answer for a given captcha |
| 19 | * @param string $index |
| 20 | * @return array|false |
| 21 | */ |
| 22 | abstract public function retrieve( $index ); |
| 23 | |
| 24 | /** |
| 25 | * Delete a result once the captcha has been used, so it cannot be reused |
| 26 | * @param string $index |
| 27 | */ |
| 28 | abstract public function clear( $index ); |
| 29 | |
| 30 | /** |
| 31 | * Whether this type of CaptchaStore needs cookies |
| 32 | * @return bool |
| 33 | */ |
| 34 | abstract public function cookiesNeeded(); |
| 35 | |
| 36 | /** |
| 37 | * The singleton instance |
| 38 | * @var CaptchaStore|null |
| 39 | */ |
| 40 | private static $instance; |
| 41 | |
| 42 | /** |
| 43 | * Get somewhere to store captcha data that will persist between requests |
| 44 | * |
| 45 | * @return CaptchaStore |
| 46 | */ |
| 47 | final public static function get() { |
| 48 | if ( !self::$instance instanceof self ) { |
| 49 | $captchaStorageClass = MediaWikiServices::getInstance()->getMainConfig() |
| 50 | ->get( 'CaptchaStorageClass' ); |
| 51 | if ( in_array( self::class, class_parents( $captchaStorageClass ) ) ) { |
| 52 | self::$instance = new $captchaStorageClass; |
| 53 | } else { |
| 54 | throw new ConfigException( "Invalid CaptchaStore class $captchaStorageClass" ); |
| 55 | } |
| 56 | } |
| 57 | return self::$instance; |
| 58 | } |
| 59 | |
| 60 | final public static function unsetInstanceForTests() { |
| 61 | if ( !defined( 'MW_PHPUNIT_TEST' ) ) { |
| 62 | throw new BadMethodCallException( 'Cannot unset ' . __CLASS__ . ' instance in operation.' ); |
| 63 | } |
| 64 | self::$instance = null; |
| 65 | } |
| 66 | |
| 67 | /** |
| 68 | * Protected constructor: no creating instances except through the factory method above |
| 69 | */ |
| 70 | protected function __construct() { |
| 71 | } |
| 72 | } |