display captcha (live)

htdocs/application/config/routes.php

@@ -47,6 +47,7 @@ $route['view/raw/:any'] = 'main/raw';
 $route['view/rss/:any'] = 'main/rss';
 $route['view/embed/:any'] = 'main/embed';
 $route['view/download/:any'] = 'main/download';
+$route['view/captcha'] = 'main/captcha';
 $route['view/:any'] = 'main/view';
 $route['lists'] = 'main/lists';
 $route['lists/rss'] = 'main/lists/rss';

htdocs/application/controllers/main.php

@@ -13,6 +13,7 @@
  * - view()
  * - cron()
  * - about()
+ * - captcha()
  * - _valid_lang()
  * - get_cm_js()
  * - error_404()
@@ -386,7 +387,8 @@ class Main extends CI_Controller
 	
 	function captcha() 
 	{
-		$this->load->view('captcha');
+		$this->load->helper('captcha');
+		$this->load->view('view/captcha');
 	}
 	
 	function _valid_lang($lang) 

htdocs/application/helpers/captcha_helper.php

@@ -1,4 +1,13 @@
-<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php
+/**
+ * Class and Function List:
+ * Function list:
+ * - create_captcha()
+ * - display_captcha()
+ * Classes list:
+ */
+
+if (!defined('BASEPATH')) exit('No direct script access allowed');
 /**
  * CodeIgniter
  *
@@ -37,16 +46,27 @@
  * @param	string	server path to font
  * @return	string
  */
+
 if (!function_exists('create_captcha')) 
 {
+	
 	function create_captcha($data = '', $img_path = '', $img_url = '', $font_path = '') 
 	{
-		$defaults = array('word' => '', 'img_path' => '', 'img_url' => '', 'img_width' => '150', 'img_height' => '30', 'font_path' => '', 'expiration' => 7200);
+		$defaults = array(
-
+			'word' => '',
+			'img_path' => '',
+			'img_url' => '',
+			'img_width' => '150',
+			'img_height' => '30',
+			'font_path' => '',
+			'expiration' => 7200
+		);
 		foreach ($defaults as $key => $val) 
 		{
+			
 			if (!is_array($data)) 
 			{
+				
 				if (!isset($$key) OR $$key == '') 
 				{
 					$$key = $val;
@@ -80,15 +100,15 @@ if ( ! function_exists('create_captcha'))
 
 		// -----------------------------------
 		// Remove old images
+
 		// -----------------------------------
 
 		list($usec, $sec) = explode(" ", microtime());
 		$now = ((float)$usec + (float)$sec);
-
 		$current_dir = @opendir($img_path);
-
 		while ($filename = @readdir($current_dir)) 
 		{
+			
 			if ($filename != "." and $filename != ".." and $filename != "index.html") 
 			{
 				$name = str_replace(".jpg", "", $filename);
@@ -99,28 +119,28 @@ if ( ! function_exists('create_captcha'))
 				}
 			}
 		}
-
 		@closedir($current_dir);
 
 		// -----------------------------------
 		// Do we have a "word" yet?
+
 		// -----------------------------------
 
+		
 		if ($word == '') 
 		{
 			$pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
-
 			$str = '';
 			for ($i = 0;$i < 8;$i++) 
 			{
 				$str.= substr($pool, mt_rand(0, strlen($pool) - 1) , 1);
 			}
-
 			$word = $str;
 		}
 
 		// -----------------------------------
 		// Determine angle and position
+
 		// -----------------------------------
 
 		$length = strlen($word);
@@ -130,9 +150,12 @@ if ( ! function_exists('create_captcha'))
 
 		// -----------------------------------
 		// Create image
+
 		// -----------------------------------
 
 		// PHP.net recommends imagecreatetruecolor(), but it isn't always available
+
+		
 		if (function_exists('imagecreatetruecolor')) 
 		{
 			$im = imagecreatetruecolor($img_width, $img_height);
@@ -144,6 +167,7 @@ if ( ! function_exists('create_captcha'))
 
 		// -----------------------------------
 		//  Assign colors
+
 		// -----------------------------------
 
 		$bg_color = imagecolorallocate($im, 255, 255, 255);
@@ -154,12 +178,14 @@ if ( ! function_exists('create_captcha'))
 
 		// -----------------------------------
 		//  Create the rectangle
+
 		// -----------------------------------
 
 		ImageFilledRectangle($im, 0, 0, $img_width, $img_height, $bg_color);
 
 		// -----------------------------------
 		//  Create the spiral pattern
+
 		// -----------------------------------
 
 		$theta = 1;
@@ -167,7 +193,6 @@ if ( ! function_exists('create_captcha'))
 		$radius = 16;
 		$circles = 20;
 		$points = 32;
-
 		for ($i = 0;$i < ($circles * $points) - 1;$i++) 
 		{
 			$theta = $theta + $thetac;
@@ -184,6 +209,7 @@ if ( ! function_exists('create_captcha'))
 
 		// -----------------------------------
 		//  Write the text
+
 		// -----------------------------------
 
 		$use_font = ($font_path != '' AND file_exists($font_path) AND function_exists('imagettftext')) ? TRUE : FALSE;
@@ -200,9 +226,9 @@ if ( ! function_exists('create_captcha'))
 			$x = rand(0, $img_width / ($length / 1.5));
 			$y = $font_size + 2;
 		}
-
 		for ($i = 0;$i < strlen($word);$i++) 
 		{
+			
 			if ($use_font == FALSE) 
 			{
 				$y = rand(0, $img_height / 2);
@@ -217,45 +243,59 @@ if ( ! function_exists('create_captcha'))
 			}
 		}
 
-
 		// -----------------------------------
 		//  Create the border
+
 		// -----------------------------------
 
 		imagerectangle($im, 0, 0, $img_width - 1, $img_height - 1, $border_color);
 
 		// -----------------------------------
 		//  Generate the image
+
 		// -----------------------------------
 
 		$img_name = $now . '.jpg';
-
 		ImageJPEG($im, $img_path . $img_name);
-
 		$img = "<img src=\"$img_url$img_name\" width=\"$img_width\" height=\"$img_height\" style=\"border:0;\" alt=\" \" />";
-
 		ImageDestroy($im);
-
+		return array(
-		return array('word' => $word, 'time' => $now, 'image' => $img);
+			'word' => $word,
+			'time' => $now,
+			'image' => $img
+		);
 	}
 }
-
 /**
  * Display CAPTCHA
  *
  * @access	public
  * @return	string
  */
+
 if (!function_exists('display_captcha')) 
 {
-	function display_captcha($data = '', $img_path = '', $img_url = '', $font_path = '')
-	{
-		$defaults = array('word' => '', 'img_path' => '', 'img_url' => '', 'img_width' => '150', 'img_height' => '30', 'font_path' => '', 'expiration' => 7200);
 	
+	function display_captcha($word = '') 
+	{
+		$data = '';
+		list($usec, $sec) = explode(" ", microtime());
+		$now = ((float)$usec + (float)$sec);
+		$defaults = array(
+			'word' => $word,
+			'img_path' => '',
+			'img_url' => '',
+			'img_width' => '150',
+			'img_height' => '30',
+			'font_path' => '',
+			'expiration' => 7200
+		);
 		foreach ($defaults as $key => $val) 
 		{
+			
 			if (!is_array($data)) 
 			{
+				
 				if (!isset($$key) OR $$key == '') 
 				{
 					$$key = $val;
@@ -267,69 +307,31 @@ if ( ! function_exists('display_captcha'))
 			}
 		}
 		
-		if ($img_path == '' OR $img_url == '')
-		{
-			return FALSE;
-		}
-
-		if ( ! @is_dir($img_path))
-		{
-			return FALSE;
-		}
-
-		if ( ! is_writable($img_path))
-		{
-			return FALSE;
-		}
-
 		if (!extension_loaded('gd')) 
 		{
 			return FALSE;
 		}
 
-		// -----------------------------------
-		// Remove old images
-		// -----------------------------------
-
-		list($usec, $sec) = explode(" ", microtime());
-		$now = ((float)$usec + (float)$sec);
-
-		$current_dir = @opendir($img_path);
-
-		while ($filename = @readdir($current_dir))
-		{
-			if ($filename != "." and $filename != ".." and $filename != "index.html")
-			{
-				$name = str_replace(".jpg", "", $filename);
-
-				if (($name + $expiration) < $now)
-				{
-					@unlink($img_path.$filename);
-				}
-			}
-		}
-
-		@closedir($current_dir);
-
 		// -----------------------------------
 		// Do we have a "word" yet?
+
 		// -----------------------------------
 
+		
 		if ($word == '') 
 		{
 			$pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
-
 			$str = '';
 			for ($i = 0;$i < 8;$i++) 
 			{
 				$str.= substr($pool, mt_rand(0, strlen($pool) - 1) , 1);
 			}
-
 			$word = $str;
 		}
 
 		// -----------------------------------
 		// Determine angle and position
+
 		// -----------------------------------
 
 		$length = strlen($word);
@@ -339,9 +341,12 @@ if ( ! function_exists('display_captcha'))
 
 		// -----------------------------------
 		// Create image
+
 		// -----------------------------------
 
 		// PHP.net recommends imagecreatetruecolor(), but it isn't always available
+
+		
 		if (function_exists('imagecreatetruecolor')) 
 		{
 			$im = imagecreatetruecolor($img_width, $img_height);
@@ -353,6 +358,7 @@ if ( ! function_exists('display_captcha'))
 
 		// -----------------------------------
 		//  Assign colors
+
 		// -----------------------------------
 
 		$bg_color = imagecolorallocate($im, 255, 255, 255);
@@ -363,12 +369,14 @@ if ( ! function_exists('display_captcha'))
 
 		// -----------------------------------
 		//  Create the rectangle
+
 		// -----------------------------------
 
 		ImageFilledRectangle($im, 0, 0, $img_width, $img_height, $bg_color);
 
 		// -----------------------------------
 		//  Create the spiral pattern
+
 		// -----------------------------------
 
 		$theta = 1;
@@ -376,7 +384,6 @@ if ( ! function_exists('display_captcha'))
 		$radius = 16;
 		$circles = 20;
 		$points = 32;
-
 		for ($i = 0;$i < ($circles * $points) - 1;$i++) 
 		{
 			$theta = $theta + $thetac;
@@ -393,6 +400,7 @@ if ( ! function_exists('display_captcha'))
 
 		// -----------------------------------
 		//  Write the text
+
 		// -----------------------------------
 
 		$use_font = ($font_path != '' AND file_exists($font_path) AND function_exists('imagettftext')) ? TRUE : FALSE;
@@ -409,9 +417,9 @@ if ( ! function_exists('display_captcha'))
 			$x = rand(0, $img_width / ($length / 1.5));
 			$y = $font_size + 2;
 		}
-
 		for ($i = 0;$i < strlen($word);$i++) 
 		{
+			
 			if ($use_font == FALSE) 
 			{
 				$y = rand(0, $img_height / 2);
@@ -426,26 +434,26 @@ if ( ! function_exists('display_captcha'))
 			}
 		}
 
-
 		// -----------------------------------
 		//  Create the border
+
 		// -----------------------------------
 
 		imagerectangle($im, 0, 0, $img_width - 1, $img_height - 1, $border_color);
 
 		// -----------------------------------
 		//  Generate the image
+
 		// -----------------------------------
 
 		$img_name = $now . '.jpg';
-
 		echo ImageJPEG($im);
-
 		ImageDestroy($im);
 	}
 }
 
 // ------------------------------------------------------------------------
-
 /* End of file captcha_helper.php */
+
+
 /* Location: ./system/heleprs/captcha_helper.php */

htdocs/application/views/defaults/paste_form.php

@@ -102,6 +102,8 @@
 		<input type="hidden" value="<?php echo $reply; ?>" name="reply" />
 		<?php }?>
 
+<img src="<?php echo site_url('view/captcha'); ?>" alt="" />
+
 		<div><button type="submit" value="submit" name="submit">Create</button></div>
 		<div class="spacer"></div>
 	</form>

htdocs/application/views/view/captcha.php

@@ -1,4 +1,3 @@
 <?php
-header('Content-type: text/plain');
+header('Content-type: image/jpeg');
-header('Content-disposition: attachment');
 display_captcha();