mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/ConfirmEdit
synced 2024-11-24 00:04:15 +00:00
36abbc6288
This change adds a new Captcha type (ReCaptchaNoCaptcha) that uses Google reCAPTCHA 2.0. See more: - https://www.google.com/recaptcha/intro/ - https://developers.google.com/recaptcha/docs/display - https://developers.google.com/recaptcha/docs/faq - http://googleonlinesecurity.blogspot.com/2014/12/are-you-robot-introducing-no-captcha.html Bug: T84918 Change-Id: I5908fd2716786237adb01a403d5bd1e22d95c563
54 lines
1.6 KiB
PHP
54 lines
1.6 KiB
PHP
<?php
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class MathCaptcha extends SimpleCaptcha {
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/** Validate a captcha response */
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function keyMatch( $answer, $info ) {
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return (int)$answer == (int)$info['answer'];
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}
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function addCaptchaAPI( &$resultArr ) {
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list( $sum, $answer ) = $this->pickSum();
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$index = $this->storeCaptcha( array( 'answer' => $answer ) );
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$resultArr['captcha']['type'] = 'math';
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$resultArr['captcha']['mime'] = 'text/tex';
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$resultArr['captcha']['id'] = $index;
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$resultArr['captcha']['question'] = $sum;
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}
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/**
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* Produce a nice little form
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* @param OutputPage $out
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*/
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function getForm( OutputPage $out ) {
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list( $sum, $answer ) = $this->pickSum();
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$index = $this->storeCaptcha( array( 'answer' => $answer ) );
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$form = '<table><tr><td>' . $this->fetchMath( $sum ) . '</td>';
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$form .= '<td>' . Html::input( 'wpCaptchaWord', false, false, array( 'tabindex' => '1', 'autocomplete' => 'off', 'required' ) ) . '</td></tr></table>';
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$form .= Html::hidden( 'wpCaptchaId', $index );
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return $form;
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}
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/** Pick a random sum */
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function pickSum() {
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$a = mt_rand( 0, 100 );
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$b = mt_rand( 0, 10 );
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$op = mt_rand( 0, 1 ) ? '+' : '-';
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$sum = "{$a} {$op} {$b} = ";
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$ans = $op == '+' ? ( $a + $b ) : ( $a - $b );
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return array( $sum, $ans );
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}
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/** Fetch the math */
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function fetchMath( $sum ) {
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if ( class_exists( 'MathRenderer' ) ) {
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$math = MathRenderer::getRenderer( $sum, array(), MW_MATH_PNG );
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} else {
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throw new Exception( 'MathCaptcha requires the Math extension for MediaWiki versions 1.18 and above.' );
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}
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$html = $math->render();
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return preg_replace( '/alt=".*?"/', '', $html );
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}
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}
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