1 files changed, 89 insertions, 0 deletions
diff --git a/extensions/ConfirmEdit/ReCaptcha.class.php b/extensions/ConfirmEdit/ReCaptcha.class.php
new file mode 100644
index 00000000..b0c15fbd
--- /dev/null
+++ b/extensions/ConfirmEdit/ReCaptcha.class.php
@@ -0,0 +1,89 @@
+<?php
+
+class ReCaptcha extends SimpleCaptcha {
+	// reCAPTHCA error code returned from recaptcha_check_answer
+	private $recaptcha_error = null;
+
+	/**
+	 * Displays the reCAPTCHA widget.
+	 * If $this->recaptcha_error is set, it will display an error in the widget.
+	 *
+	 */
+	function getForm() {
+		global $wgReCaptchaPublicKey, $wgReCaptchaTheme;
+
+		$useHttps = ( isset( $_SERVER['HTTPS'] ) && $_SERVER['HTTPS'] == 'on' );
+		$js = 'var RecaptchaOptions = ' . Xml::encodeJsVar( array( 'theme' => $wgReCaptchaTheme, 'tabindex' => 1  ) );
+
+		return Html::inlineScript( $js ) . recaptcha_get_html( $wgReCaptchaPublicKey, $this->recaptcha_error, $useHttps );
+	}
+
+	/**
+	 * Calls the library function recaptcha_check_answer to verify the users input.
+	 * Sets $this->recaptcha_error if the user is incorrect.
+	 * @return boolean
+	 *
+	 */
+	function passCaptcha() {
+		global $wgReCaptchaPrivateKey, $wgRequest;
+
+		// API is hardwired to return wpCaptchaId and wpCaptchaWord, so use that if the standard two are empty
+		$challenge = $wgRequest->getVal( 'recaptcha_challenge_field', $wgRequest->getVal( 'wpCaptchaId' ) );
+		$response = $wgRequest->getVal( 'recaptcha_response_field', $wgRequest->getVal( 'wpCaptchaWord' ) );
+
+		if ( $response === null ) {
+			// new captcha session
+			return false;
+		}
+
+		$recaptcha_response = recaptcha_check_answer(
+			$wgReCaptchaPrivateKey,
+			$wgRequest->getIP(),
+			$challenge,
+			$response
+		);
+
+		if ( !$recaptcha_response->is_valid ) {
+			$this->recaptcha_error = $recaptcha_response->error;
+			return false;
+		}
+
+		$recaptcha_error = null;
+
+		return true;
+
+	}
+
+	function addCaptchaAPI( &$resultArr ) {
+		global $wgReCaptchaPublicKey;
+
+		$resultArr['captcha']['type'] = 'recaptcha';
+		$resultArr['captcha']['mime'] = 'image/png';
+		$resultArr['captcha']['key'] = $wgReCaptchaPublicKey;
+		$resultArr['captcha']['error'] = $this->recaptcha_error;
+	}
+
+	/**
+	 * Show a message asking the user to enter a captcha on edit
+	 * The result will be treated as wiki text
+	 *
+	 * @param $action Action being performed
+	 * @return string
+	 */
+	function getMessage( $action ) {
+		$name = 'recaptcha-' . $action;
+		$text = wfMsg( $name );
+
+		# Obtain a more tailored message, if possible, otherwise, fall back to
+		# the default for edits
+		return wfEmptyMsg( $name, $text ) ? wfMsg( 'recaptcha-edit' ) : $text;
+	}
+
+	public function APIGetAllowedParams( &$module, &$params ) {
+		return true;
+	}
+
+	public function APIGetParamDescription( &$module, &$desc ) {
+		return true;
+	}
+}