1 files changed, 0 insertions, 50 deletions
diff --git a/extensions/ConfirmEdit/MathCaptcha.class.php b/extensions/ConfirmEdit/MathCaptcha.class.php
deleted file mode 100644
index ac220baa..00000000
--- a/extensions/ConfirmEdit/MathCaptcha.class.php
+++ /dev/null
@@ -1,50 +0,0 @@
-<?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>' . Html::input( 'wpCaptchaWord', false, false, array( 'tabindex' => '1', 'autocomplete' => 'off', 'required' ) ) . '</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 ) {
-		if ( class_exists( 'MathRenderer' ) ) {
-			$math = MathRenderer::getRenderer( $sum, array(), MW_MATH_PNG );
-		} else {
-			throw new MWException( 'MathCaptcha requires the Math extension for MediaWiki versions 1.18 and above.' );
-		}
-		$html = $math->render();
-		return preg_replace( '/alt=".*?"/', '', $html );
-	}
-}