Add new directory structure. Tags will contain current and past releases, and stable will contain any bug fixes to the current stable release so users won't have to get the potentially broken trunk build to fix a screwup in stable.

Trunk updated to 0.9

git-svn-id: http://kusabax.cultnet.net/svn/repo/stable@176 73d99b7e-4f53-4972-b7b7-2ecd3c4d89ee

captcha.php

@@ -0,0 +1,133 @@
+<?php
+/*
+ * This file is part of kusaba.
+ *
+ * kusaba is free software; you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 2 of the License, or (at your option) any later
+ * version.
+ *
+ * kusaba is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+ * A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * kusaba; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+/**
+ * Captcha display
+ *
+ * Generates a random word and stores it in a session variable, which is later used as a verification that the poster is in fact a human
+ *
+ * @package kusaba
+ */
+
+/**
+ * Start the session
+ */
+session_start();
+
+$preconfig_db_unnecessary = true;
+
+/**
+ * Require the configuration file
+ */
+require 'config.php';
+
+/*
+ * File: CaptchaSecurityImages.php
+ * Author: Simon Jarvis
+ * Copyright: 2006 Simon Jarvis
+ * Date: 03/08/06
+ * Updated: 07/02/07
+ * Requirements: PHP 4/5 with GD and FreeType libraries
+ * Link: http://www.white-hat-web-design.co.uk/articles/php-captcha.php
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details:
+ * http://www.gnu.org/licenses/gpl.html
+ *
+ */
+
+/**
+ * Captcha image class
+ *
+ * @package kusaba
+ */
+class CaptchaSecurityImages {
+
+	function CaptchaSecurityImages($width='120',$height='40',$characters='6',$font) {
+		global $font,$font_ballback;
+
+		require_once KU_ROOTDIR . 'inc/classes/randword.class.php';
+		$randword_class = new Rand_Word;
+
+		$code = $randword_class->rand_word($characters);
+
+		/* font size will be 75% of the image height */
+		$font_size = $height * 0.85;
+		$image = @imagecreate($width, $height) or die('Cannot initialize new GD image stream');
+		/* set the colours */
+		$background_color = imagecolorallocate($image, 255, 255, 255);
+		$text_color = imagecolorallocate($image, 35, 45, 100);
+		$noise_color = imagecolorallocate($image, 100, 120, 180);
+		/* generate random dots in background */
+		if (@imagettfbbox($font_size, 0, $font, $code)) {
+			$ttf_supported = true;
+			for( $i=0; $i<($width*$height)/3; $i++ ) {
+				imagefilledellipse($image, mt_rand(0,$width), mt_rand(0,$height), 1, 1, $noise_color);
+			}
+		} else {
+			$ttf_supported = false;
+			for( $i=0; $i<($width*$height)/12; $i++ ) {
+				imagefilledellipse($image, mt_rand(0,$width), mt_rand(0,$height), 1, 1, $noise_color);
+			}
+		}
+		/* generate random lines in background */
+		if ($ttf_supported) {
+			for( $i=0; $i<($width*$height)/150; $i++ ) {
+				imageline($image, mt_rand(0,$width), mt_rand(0,$height), mt_rand(0,$width), mt_rand(0,$height), $noise_color);
+			}
+		}
+		if ($ttf_supported) {
+			$textbox = imagettfbbox($font_size, 0, $font, $code);
+			$x = ($width - $textbox[4])/2;
+			$y = ($height - $textbox[5])/2;
+			imagettftext($image, $font_size, 0, $x, $y, $text_color, $font, $code);
+		} else {
+			$x = 4;
+			$y = 5;
+			imagestring($image, $font_ballback, $x, $y, $code, $text_color);
+		}
+		/* create textbox and add text*/
+		$textbox = imagettfbbox($font_size, 0, $font, $code) or die('Error in imagettfbbox function');
+		$x = ($width - $textbox[4])/2;
+		$y = ($height - $textbox[5])/2;
+		imagettftext($image, $font_size, 0, $x, $y, $text_color, $font, $code) or die('Error in imagettftext function');
+		/*output captcha image to browser */
+		header('Content-Type: image/jpeg');
+		imagejpeg($image);
+		imagedestroy($image);
+		$_SESSION['security_code'] = $code;
+	}
+
+}
+
+$width = 90;
+$height = 30;
+$characters = 6;
+
+$font = KU_ROOTDIR . 'lib/fonts/monofont.ttf';
+$font_fallback = imageloadfont(KU_ROOTDIR . 'lib/fonts/captchafont.gdf');
+
+$captcha = new CaptchaSecurityImages($width,$height,$characters,$font);
+
+?>