reCAPTCHA support

post.php

@@ -183,6 +183,20 @@
 		if(!openBoard($post['board']))
 			error($config['error']['noboard']);
 		
+		// Check for CAPTCHA right after opening the board so the "return" link is in there
+		if($config['recaptcha']) {
+			if(!isset($_POST['recaptcha_challenge_field']) || !isset($_POST['recaptcha_response_field']))
+				error($config['error']['bot']);
+			// Check what reCAPTCHA has to say...
+			$resp = recaptcha_check_answer($config['recaptcha_private'],
+				$_SERVER['REMOTE_ADDR'],
+				$_POST['recaptcha_challenge_field'],
+				$_POST['recaptcha_response_field']);
+			if(!$resp->is_valid) {
+				error($config['error']['captcha']);
+			}
+		}
+		
 		if(checkSpam())
 			error($config['error']['spam']);