Gecko [ paroquia-rio-de-mouro.pt ]

Name	Size	Permission	Date
Captcha.php	25.3 KB	-rw-r--r--	2011-04-24 19:33
CaptchaStore.php	2.29 KB	-rw-r--r--	2011-04-24 18:49
ConfirmEdit.alias.php	1.8 KB	-rw-r--r--	2011-05-14 02:11
ConfirmEdit.i18n.php	381.17 KB	-rw-r--r--	2011-07-13 21:43
ConfirmEdit.php	8.46 KB	-rw-r--r--	2011-09-13 02:21
ConfirmEditHooks.php	2 KB	-rw-r--r--	2011-04-24 13:41
FancyCaptcha.class.php	6.63 KB	-rw-r--r--	2012-01-03 20:34
FancyCaptcha.i18n.php	132.9 KB	-rw-r--r--	2011-07-18 22:05
FancyCaptcha.php	1.75 KB	-rw-r--r--	2010-08-29 15:31
HTMLCaptchaField.php	2.37 KB	-rw-r--r--	2011-04-24 13:47
MathCaptcha.class.php	1.79 KB	-rw-r--r--	2011-07-13 01:11
MathCaptcha.php	512 B	-rw-r--r--	2010-06-06 17:12
QuestyCaptcha.class.php	2.05 KB	-rw-r--r--	2012-01-03 20:34
QuestyCaptcha.i18n.php	100.98 KB	-rw-r--r--	2011-07-11 21:37
QuestyCaptcha.php	1.8 KB	-rw-r--r--	2011-02-09 00:39
README	1.21 KB	-rw-r--r--	2011-09-13 02:21
ReCaptcha.i18n.php	31.76 KB	-rw-r--r--	2011-07-13 21:43
ReCaptcha.php	3.78 KB	-rw-r--r--	2011-09-29 23:37
captcha.py	7.66 KB	-rw-r--r--	2010-06-21 15:45
recaptchalib.php	9.68 KB	-rw-r--r--	2011-09-29 23:37

Rename

<?php

class MathCaptcha extends SimpleCaptcha {

/** Validate a captcha response */
	function keyMatch( $answer, $info ) {
		return (int)$answer == (int)$info['answer'];
	}

function addCaptchaAPI( &$resultArr ) {
		list( $sum, $answer ) = $this->pickSum();
		$index = $this->storeCaptcha( array( 'answer' => $answer ) );
		$resultArr['captcha']['type'] = 'math';
		$resultArr['captcha']['mime'] = 'text/tex';
		$resultArr['captcha']['id'] = $index;
		$resultArr['captcha']['question'] = $sum;
	}

/** Produce a nice little form */
	function getForm() {
		list( $sum, $answer ) = $this->pickSum();
		$index = $this->storeCaptcha( array( 'answer' => $answer ) );

$form = '<table><tr><td>' . $this->fetchMath( $sum ) . '</td>';
		$form .= '<td>' . Xml::input( 'wpCaptchaWord', false, false, array( 'tabindex' => '1' ) ) . '</td></tr></table>';
		$form .= Html::hidden( 'wpCaptchaId', $index );
		return $form;
	}

/** Pick a random sum */
	function pickSum() {
		$a = mt_rand( 0, 100 );
		$b = mt_rand( 0, 10 );
		$op = mt_rand( 0, 1 ) ? '+' : '-';
		$sum = "{$a} {$op} {$b} = ";
		$ans = $op == '+' ? ( $a + $b ) : ( $a - $b );
		return array( $sum, $ans );
	}

/** Fetch the math */
	function fetchMath( $sum ) {
		// class_exists() unfortunately doesn't work with HipHop, and
		// its replacement, MWInit::classExists(), wasn't added until
		// MW 1.18, and is thus unusable here - so instead, we'll
		// just duplicate the code of MWInit::classExists().
		try {
			$r = new ReflectionClass( 'MathRenderer' );
		} catch( ReflectionException $r ) {
			throw new MWException( 'MathCaptcha requires the Math extension for MediaWiki versions 1.18 and above.' );
		}

$math = new MathRenderer( $sum );
		$math->setOutputMode( MW_MATH_PNG );
		$html = $math->render();
		return preg_replace( '/alt=".*?"/', '', $html );
	}
}