Added some more hooks to the page editing pipeline. It should now be possible to add controls to the page editor, send the data from them out to the server, and process them on the server side.
+ − <?php
+ −
+ − /*
+ − * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
+ − * Copyright (C) 2006-2009 Dan Fuhry
+ − * captcha.php - visual confirmation system used during registration
+ − *
+ − * This program is Free Software; you can redistribute 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 details.
+ − */
+ −
+ − /**
+ − * A more complex captcha engine that relies on GD.
+ − * @package Enano
+ − * @subpackage User management
+ − * @copyright 2007-2008 Dan Fuhry
+ − * @copyright 2002-2008 phpBB Group
+ − */
+ −
+ − class captcha_engine_potpourri extends captcha_base
+ − {
+ − var $captcha_config;
+ −
+ − function __construct($sid, $r = false)
+ − {
+ − parent::__construct($sid, $r);
+ −
+ − $hex = Array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F');
+ − $latticecolor = '#';
+ − for ( $i = 0; $i < 6; $i++ )
+ − $latticecolor .= $hex[mt_rand(0, 15)];
+ −
+ − $this->captcha_config = array (
+ − 'width' => '350',
+ − 'height' => '90',
+ − 'background_color' => '#E5ECF9',
+ − 'jpeg' => '0',
+ − 'jpeg_quality' => '95',
+ − 'pre_letters' => '1',
+ − 'pre_letters_great' => '0',
+ − 'font' => '1',
+ − 'chess' => '2',
+ − 'ellipses' => '2',
+ − 'arcs' => '2',
+ − 'lines' => '2',
+ − 'image' => '0',
+ − 'gammacorrect' => '0.8',
+ − 'foreground_lattice_x' => (string)mt_rand(25, 30),
+ − 'foreground_lattice_y' => (string)mt_rand(25, 30),
+ − 'lattice_color' => $latticecolor,
+ − );
+ − }
+ −
+ − function make_image()
+ − {
+ − $code = $this->get_code();
+ −
+ − // Prefs
+ − $total_width = $this->captcha_config['width'];
+ − $total_height = $this->captcha_config['height'];
+ −
+ − $hex_bg_color = $this->get_rgb($this->captcha_config['background_color']);
+ − $bg_color = array();
+ − $bg_color = explode(",", $hex_bg_color);
+ −
+ − $jpeg = $this->captcha_config['jpeg'];
+ − $img_quality = $this->captcha_config['jpeg_quality'];
+ − // Max quality is 95
+ −
+ − $pre_letters = $this->captcha_config['pre_letters'];
+ − $pre_letter_great = $this->captcha_config['pre_letters_great'];
+ − $rnd_font = $this->captcha_config['font'];
+ − $chess = $this->captcha_config['chess'];
+ − $ellipses = $this->captcha_config['ellipses'];
+ − $arcs = $this->captcha_config['arcs'];
+ − $lines = $this->captcha_config['lines'];
+ − $image = $this->captcha_config['image'];
+ −
+ − $gammacorrect = $this->captcha_config['gammacorrect'];
+ −
+ − $foreground_lattice_y = $this->captcha_config['foreground_lattice_y'];
+ − $foreground_lattice_x = $this->captcha_config['foreground_lattice_x'];
+ − $hex_lattice_color = $this->get_rgb($this->captcha_config['lattice_color']);
+ − $rgb_lattice_color = array();
+ − $rgb_lattice_color = explode(",", $hex_lattice_color);
+ −
+ − $font_debug = false;
+ −
+ − // Fonts and images init
+ − if ($image)
+ − {
+ − $bg_imgs = array();
+ − if ($img_dir = opendir(ENANO_ROOT.'/includes/captcha/pics/'))
+ − {
+ − while (true == ($file = @readdir($img_dir)))
+ − {
+ − if ((substr(strtolower($file), -3) == 'jpg') || (substr(strtolower($file), -3) == 'gif'))
+ − {
+ − $bg_imgs[] = $file;
+ − }
+ − }
+ − closedir($img_dir);
+ − }
+ − // Grab a random Background Image or set FALSE if none was found
+ − $bg_img = ( count($bg_imgs) ) ? rand(0, (count($bg_imgs)-1)) : false;
+ − }
+ −
+ − $fonts = array();
+ − if ($fonts_dir = opendir(ENANO_ROOT . '/includes/captcha/fonts/'))
+ − {
+ − while (true == ($file = @readdir($fonts_dir)))
+ − {
+ − if ((substr(strtolower($file), strlen($file)-3, strlen($file)) == 'ttf'))
+ − {
+ − $fonts[] = $file;
+ − }
+ − }
+ − closedir($fonts_dir);
+ − } else {
+ − die('Error reading directory: '.ENANO_ROOT.'/includes/captcha/fonts/');
+ − }
+ − $font = mt_rand(0, (count($fonts)-1));
+ −
+ − // Generate
+ − $image = ($this->gdVersion() >= 2) ? imagecreatetruecolor($total_width, $total_height) : imagecreate($total_width, $total_height);
+ − $background_color = imagecolorallocate($image, $bg_color[0], $bg_color[1], $bg_color[2]);
+ − imagefill($image, 0, 0, $background_color);
+ −
+ − // Generate backgrund
+ − if ($chess == '1' || $chess == '2' && rand(0,1))
+ − {
+ − // Draw rectangles
+ − for($i = 0; $i <= 8; $i++)
+ − {
+ − $rectanglecolor = imagecolorallocate($image, rand(100,200),rand(100,200),rand(100,200));
+ − imagefilledrectangle($image, 0, 0, round($total_width-($total_width/8*$i)), round($total_height), $rectanglecolor);
+ − $rectanglecolor = imagecolorallocate($image, rand(100,200),rand(100,200),rand(100,200));
+ − imagefilledrectangle($image, 0, 0, round($total_width-($total_width/8*$i)), round($total_height/2), $rectanglecolor);
+ − }
+ − }
+ − if ($ellipses == '1' || $ellipses == '2' && rand(0,1))
+ − {
+ − // Draw random ellipses
+ − for ($i = 1; $i <= 60; $i++)
+ − {
+ − $ellipsecolor = imagecolorallocate($image, rand(100,250),rand(100,250),rand(100,250));
+ − imagefilledellipse($image, round(rand(0, $total_width)), round(rand(0, $total_height)), round(rand(0, $total_width/8)), round(rand(0, $total_height/4)), $ellipsecolor);
+ − }
+ − }
+ − if ($arcs == '1' || $arcs == '2' && rand(0,1))
+ − {
+ − // Draw random partial ellipses
+ − for ($i = 0; $i <= 30; $i++)
+ − {
+ − $linecolor = imagecolorallocate($image, rand(120,255),rand(120,255),rand(120,255));
+ − $cx = round(rand(1, $total_width));
+ − $cy = round(rand(1, $total_height));
+ − $int_w = round(rand(1, $total_width/2));
+ − $int_h = round(rand(1, $total_height));
+ − imagearc($image, $cx, $cy, $int_w, $int_h, round(rand(0, 190)), round(rand(191, 360)), $linecolor);
+ − imagearc($image, $cx-1, $cy-1, $int_w, $int_h, round(rand(0, 190)), round(rand(191, 360)), $linecolor);
+ − }
+ − }
+ − if ($lines == '1' || $lines == '2' && rand(0,1))
+ − {
+ − // Draw random lines
+ − for ($i = 0; $i <= 50; $i++)
+ − {
+ − $linecolor = imagecolorallocate($image, rand(120,255),rand(120,255),rand(120,255));
+ − imageline($image, round(rand(1, $total_width*3)), round(rand(1, $total_height*5)), round(rand(1, $total_width/2)), round(rand(1, $total_height*2)), $linecolor);
+ − }
+ − }
+ −
+ − $text_color_array = array('255,51,0', '51,77,255', '204,51,102', '0,153,0', '255,166,2', '255,0,255', '255,0,0', '0,255,0', '0,0,255', '0,255,255');
+ − shuffle($text_color_array);
+ − $pre_text_color_array = array('255,71,20', '71,20,224', '224,71,122', '20,173,20', '255,186,22', '25,25,25');
+ − shuffle($pre_text_color_array);
+ − $white = imagecolorallocate($image, 255, 255, 255);
+ − $gray = imagecolorallocate($image, 100, 100, 100);
+ − $black = imagecolorallocate($image, 0, 0, 0);
+ − $lattice_color = imagecolorallocate($image, $rgb_lattice_color[0], $rgb_lattice_color[1], $rgb_lattice_color[2]);
+ −
+ − $x_char_position = (round(($total_width - 12) / strlen($code)) + mt_rand(-3, 5));
+ −
+ − for ($i = 0; $i < strlen($code); $i++)
+ − {
+ − mt_srand((double)microtime()*1000000);
+ −
+ − $char = $code{$i};
+ − $size = mt_rand(floor($total_height / 3.5), ceil($total_height / 2.8));
+ − $font = ($rnd_font) ? rand(0, (count($fonts)-1)) : $font;
+ − $angle = mt_rand(-30, 30);
+ −
+ − $char_pos = array();
+ − $char_pos = imagettfbbox($size, $angle, ENANO_ROOT.'/includes/captcha/fonts/'.$fonts[$font], $char);
+ − $letter_width = abs($char_pos[0]) + abs($char_pos[4]);
+ − $letter_height = abs($char_pos[1]) + abs($char_pos[5]);
+ −
+ − $x_pos = ($x_char_position / 4) + ($i * $x_char_position);
+ − ($i == strlen($code)-1 && $x_pos >= ($total_width - ($letter_width + 5))) ? $x_pos = ($total_width - ($letter_width + 5)) : '';
+ − $y_pos = mt_rand(($size * 1.4 ), $total_height - ($size * 0.4));
+ −
+ − // Pre letters
+ − $size = ($pre_letter_great) ? $size + (2 * $pre_letters) : $size - (2 * $pre_letters);
+ − for ($count = 1; $count <= $pre_letters; $count++)
+ − {
+ − $pre_angle = $angle + mt_rand(-20, 20);
+ −
+ − $text_color = $pre_text_color_array[mt_rand(0,count($pre_text_color_array)-1)];
+ − $text_color = explode(",", $text_color);
+ − $textcolor = imagecolorallocate($image, $text_color[0], $text_color[1], $text_color[2]);
+ −
+ − imagettftext($image, $size, $pre_angle, $x_pos, $y_pos-2, $white, ENANO_ROOT.'/includes/captcha/fonts/'.$fonts[$font], $char);
+ − imagettftext($image, $size, $pre_angle, $x_pos+2, $y_pos, $black, ENANO_ROOT.'/includes/captcha/fonts/'.$fonts[$font], $char);
+ − imagettftext($image, $size, $pre_angle, $x_pos+1, $y_pos-1, $textcolor, ENANO_ROOT.'/includes/captcha/fonts/'.$fonts[$font], $char);
+ −
+ − $size = ($pre_letter_great) ? $size - 2 : $size + 2;
+ − }
+ −
+ − // Final letters
+ − $text_color = $text_color_array[mt_rand(0,count($text_color_array)-1)];
+ − $text_color = explode(",", $text_color);
+ − $textcolor = imagecolorallocate($image, $text_color[0], $text_color[1], $text_color[2]);
+ −
+ − imagettftext($image, $size, $angle, $x_pos, $y_pos-2, $white, ENANO_ROOT.'/includes/captcha/fonts/'.$fonts[$font], $char);
+ − imagettftext($image, $size, $angle, $x_pos+2, $y_pos, $black, ENANO_ROOT.'/includes/captcha/fonts/'.$fonts[$font], $char);
+ − imagettftext($image, $size, $angle, $x_pos+1, $y_pos-1, $textcolor, ENANO_ROOT.'/includes/captcha/fonts/'.$fonts[$font], $char);
+ − }
+ −
+ −
+ − ($gammacorrect) ? imagegammacorrect($image, 1.0, $gammacorrect) : '';
+ −
+ − // Generate a white lattice in foreground
+ − if ($foreground_lattice_y)
+ − {
+ − // x lines
+ − $ih = round($total_height / $foreground_lattice_y);
+ − for ($i = 0; $i <= $ih; $i++)
+ − {
+ − imageline($image, 0, $i*$foreground_lattice_y, $total_width, $i*$foreground_lattice_y, $lattice_color);
+ − }
+ − }
+ − if ($foreground_lattice_x)
+ − {
+ − // y lines
+ − $iw = round($total_width / $foreground_lattice_x);
+ − for ($i = 0; $i <= $iw; $i++)
+ − {
+ − imageline($image, $i*$foreground_lattice_x, 0, $i*$foreground_lattice_x, $total_height, $lattice_color);
+ − }
+ − }
+ −
+ − // Font debug
+ − if ($font_debug && !$rnd_font)
+ − {
+ − imagestring($image, 5, 2, 0, $fonts[$font], $white);
+ − imagestring($image, 5, 5, 0, $fonts[$font], $white);
+ − imagestring($image, 5, 4, 2, $fonts[$font], $gray);
+ − imagestring($image, 5, 3, 1, $fonts[$font], $black);
+ − }
+ −
+ − // Display
+ − header("Last-Modified: " . gmdate("D, d M Y H:i:s") ." GMT");
+ − header("Pragma: no-cache");
+ − header("Cache-Control: no-store, no-cache, max-age=0, must-revalidate");
+ − (!$jpeg) ? header("Content-Type: image/png") : header("Content-Type: image/jpeg");
+ −
+ − (!$jpeg) ? imagepng($image) : imagejpeg($image, '', $img_quality);
+ − imagedestroy($image);
+ − }
+ −
+ − // Function get_rgb by Frank Burian
+ − // http://www.phpfuncs.org/?content=show&id=46
+ − function get_rgb($hex) {
+ − $hex_array = array(0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
+ − 'A' => 10, 'B' => 11, 'C' => 12, 'D' => 13, 'E' => 14,
+ − 'F' => 15);
+ − $hex = str_replace('#', '', strtoupper($hex));
+ − if (($length = strlen($hex)) == 3) {
+ − $hex = $hex{0}.$hex{0}.$hex{1}.$hex{1}.$hex{2}.$hex{2};
+ − $length = 6;
+ − }
+ − if ($length != 6 or strlen(str_replace(array_keys($hex_array), '', $hex)))
+ − return NULL;
+ − $rgb['r'] = $hex_array[$hex{0}] * 16 + $hex_array[$hex{1}];
+ − $rgb['g'] = $hex_array[$hex{2}] * 16 + $hex_array[$hex{3}];
+ − $rgb['b']= $hex_array[$hex{4}] * 16 + $hex_array[$hex{5}];
+ − return $rgb['r'].','.$rgb['g'].','.$rgb['b'];
+ − }
+ −
+ − // Function gdVersion by Hagan Fox
+ − // http://de3.php.net/manual/en/function.gd-info.php#52481
+ − function gdVersion($user_ver = 0)
+ − {
+ − if (! extension_loaded('gd')) { return; }
+ − static $gd_ver = 0;
+ − // Just accept the specified setting if it's 1.
+ − if ($user_ver == 1) { $gd_ver = 1; return 1; }
+ − // Use the static variable if function was called previously.
+ − if ($user_ver !=2 && $gd_ver > 0 ) { return $gd_ver; }
+ − // Use the gd_info() function if possible.
+ − if (function_exists('gd_info')) {
+ − $ver_info = gd_info();
+ − preg_match('/\d/', $ver_info['GD Version'], $match);
+ − $gd_ver = $match[0];
+ − return $match[0];
+ − }
+ − // If phpinfo() is disabled use a specified / fail-safe choice...
+ − if (preg_match('/phpinfo/', ini_get('disable_functions'))) {
+ − if ($user_ver == 2) {
+ − $gd_ver = 2;
+ − return 2;
+ − } else {
+ − $gd_ver = 1;
+ − return 1;
+ − }
+ − }
+ − // ...otherwise use phpinfo().
+ − ob_start();
+ − phpinfo(8);
+ − $info = ob_get_contents();
+ − ob_end_clean();
+ − $info = stristr($info, 'gd version');
+ − preg_match('/\d/', $info, $match);
+ − $gd_ver = $match[0];
+ − return $match[0];
+ − }
+ − }