moved CAPTCHA plugin to a helper

1 files changed, 0 insertions, 355 deletions

diff --git a/system/plugins/captcha_pi.php b/system/plugins/captcha_pi.php
deleted file mode 100644
index 7092f28e1..000000000
--- a/system/plugins/captcha_pi.php
+++ /dev/null
@@ -1,355 +0,0 @@
-<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
-/**
- * CodeIgniter
- *
- * An open source application development framework for PHP 4.3.2 or newer
- *
- * @package		CodeIgniter
- * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2010, EllisLab, Inc.
- * @license		http://codeigniter.com/user_guide/license.html
- * @link		http://codeigniter.com
- * @since		Version 1.0
- * @filesource
- */
-
-// ------------------------------------------------------------------------
-
-/*
-Instructions:
-
-Load the plugin using:
-
- 	$this->load->plugin('captcha');
-
-Once loaded you can generate a captcha like this:
-	
-	$vals = array(
-					'word'		 => 'Random word',
-					'img_path'	 => './captcha/',
-					'img_url'	 => 'http://example.com/captcha/',
-					'font_path'	 => './path/to/fonts/texb.ttf',
-					'img_width'	 => '150',
-					'img_height' => 30,
-					'expiration' => 7200
-				);
-	
-	$cap = create_captcha($vals);
-	echo $cap['image'];
-	
-
-NOTES:
-	
-	The captcha function requires the GD image library.
-	
-	Only the img_path and img_url are required.
-	
-	If a "word" is not supplied, the function will generate a random
-	ASCII string.  You might put together your own word library that
-	you can draw randomly from.
-	
-	If you do not specify a path to a TRUE TYPE font, the native ugly GD
-	font will be used.
-	
-	The "captcha" folder must be writable (666, or 777)
-	
-	The "expiration" (in seconds) signifies how long an image will
-	remain in the captcha folder before it will be deleted.  The default
-	is two hours.
-
-RETURNED DATA
-
-The create_captcha() function returns an associative array with this data:
-
-  [array]
-  (
-	'image' => IMAGE TAG
-	'time'	=> TIMESTAMP (in microtime)
-	'word'	=> CAPTCHA WORD
-  )
-
-The "image" is the actual image tag:
-<img src="http://example.com/captcha/12345.jpg" width="140" height="50" />
-
-The "time" is the micro timestamp used as the image name without the file
-extension.  It will be a number like this:  1139612155.3422
-
-The "word" is the word that appears in the captcha image, which if not
-supplied to the function, will be a random string.
-
-
-ADDING A DATABASE
-
-In order for the captcha function to prevent someone from posting, you will need
-to add the information returned from create_captcha() function to your database.
-Then, when the data from the form is submitted by the user you will need to verify
-that the data exists in the database and has not expired.
-
-Here is a table prototype:
-
-	CREATE TABLE captcha (
-	 captcha_id bigint(13) unsigned NOT NULL auto_increment,
-	 captcha_time int(10) unsigned NOT NULL,
-	 ip_address varchar(16) default '0' NOT NULL,
-	 word varchar(20) NOT NULL,
-	 PRIMARY KEY `captcha_id` (`captcha_id`),
-	 KEY `word` (`word`)
-	)
-
-
-Here is an example of usage with a DB.
-
-On the page where the captcha will be shown you'll have something like this:
-
-	$this->load->plugin('captcha');
-	$vals = array(
-					'img_path'	 => './captcha/',
-					'img_url'	 => 'http://example.com/captcha/'
-				);
-	
-	$cap = create_captcha($vals);
-
-	$data = array(
-					'captcha_time'	=> $cap['time'],
-					'ip_address'	=> $this->input->ip_address(),
-					'word'			=> $cap['word']
-				);
-
-	$query = $this->db->insert_string('captcha', $data);
-	$this->db->query($query);
-		
-	echo 'Submit the word you see below:';
-	echo $cap['image'];
-	echo '<input type="text" name="captcha" value="" />';
-
-
-Then, on the page that accepts the submission you'll have something like this:
-
-	// First, delete old captchas
-	$expiration = time()-7200; // Two hour limit
-	$this->db->query("DELETE FROM captcha WHERE captcha_time < ".$expiration);		
-
-	// Then see if a captcha exists:
-	$sql = "SELECT COUNT(*) AS count FROM captcha WHERE word = ? AND ip_address = ? AND date > ?";
-	$binds = array($_POST['captcha'], $this->input->ip_address(), $expiration);
-	$query = $this->db->query($sql, $binds);
-	$row = $query->row();
-
-	if ($row->count == 0)
-	{
-		echo "You must submit the word that appears in the image";
-	}
-
-*/
-
-
-	
-/**
-|==========================================================
-| Create Captcha
-|==========================================================
-|
-*/
-function create_captcha($data = '', $img_path = '', $img_url = '', $font_path = '')
-{		
-	$defaults = array('word' => '', 'img_path' => '', 'img_url' => '', 'img_width' => '150', 'img_height' => '30', 'font_path' => '', 'expiration' => 7200);		
-	
-	foreach ($defaults as $key => $val)
-	{
-		if ( ! is_array($data))
-		{
-			if ( ! isset($$key) OR $$key == '')
-			{
-				$$key = $val;
-			}
-		}
-		else
-		{			
-			$$key = ( ! isset($data[$key])) ? $val : $data[$key];
-		}
-	}
-	
-	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);
-	$angle	= ($length >= 6) ? rand(-($length-6), ($length-6)) : 0;
-	$x_axis	= rand(6, (360/$length)-16);			
-	$y_axis = ($angle >= 0 ) ? rand($img_height, $img_width) : rand(6, $img_height);
-	
-	// -----------------------------------
-	// Create image
-	// -----------------------------------
-	
-	// PHP.net recommends imagecreatetruecolor(), but it isn't always available
-	if (function_exists('imagecreatetruecolor'))
-	{
-		$im = imagecreatetruecolor($img_width, $img_height);
-	}
-	else
-	{
-		$im = imagecreate($img_width, $img_height);
-	}
-			
-	// -----------------------------------
-	//  Assign colors
-	// -----------------------------------
-	
-	$bg_color		= imagecolorallocate ($im, 255, 255, 255);
-	$border_color	= imagecolorallocate ($im, 153, 102, 102);
-	$text_color		= imagecolorallocate ($im, 204, 153, 153);
-	$grid_color		= imagecolorallocate($im, 255, 182, 182);
-	$shadow_color	= imagecolorallocate($im, 255, 240, 240);
-
-	// -----------------------------------
-	//  Create the rectangle
-	// -----------------------------------
-	
-	ImageFilledRectangle($im, 0, 0, $img_width, $img_height, $bg_color);
-	
-	// -----------------------------------
-	//  Create the spiral pattern
-	// -----------------------------------
-	
-	$theta		= 1;
-	$thetac		= 7;
-	$radius		= 16;
-	$circles	= 20;
-	$points		= 32;
-
-	for ($i = 0; $i < ($circles * $points) - 1; $i++)
-	{
-		$theta = $theta + $thetac;
-		$rad = $radius * ($i / $points );
-		$x = ($rad * cos($theta)) + $x_axis;
-		$y = ($rad * sin($theta)) + $y_axis;
-		$theta = $theta + $thetac;
-		$rad1 = $radius * (($i + 1) / $points);
-		$x1 = ($rad1 * cos($theta)) + $x_axis;
-		$y1 = ($rad1 * sin($theta )) + $y_axis;
-		imageline($im, $x, $y, $x1, $y1, $grid_color);
-		$theta = $theta - $thetac;
-	}
-
-	// -----------------------------------
-	//  Write the text
-	// -----------------------------------
-	
-	$use_font = ($font_path != '' AND file_exists($font_path) AND function_exists('imagettftext')) ? TRUE : FALSE;
-		
-	if ($use_font == FALSE)
-	{
-		$font_size = 5;
-		$x = rand(0, $img_width/($length/3));
-		$y = 0;
-	}
-	else
-	{
-		$font_size	= 16;
-		$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 , $img_height/2);
-			imagestring($im, $font_size, $x, $y, substr($word, $i, 1), $text_color);
-			$x += ($font_size*2);
-		}
-		else
-		{		
-			$y = rand($img_height/2, $img_height-3);
-			imagettftext($im, $font_size, $angle, $x, $y, $text_color, $font_path, substr($word, $i, 1));
-			$x += $font_size;
-		}
-	}
-	
-
-	// -----------------------------------
-	//  Create the border
-	// -----------------------------------
-
-	imagerectangle($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('word' => $word, 'time' => $now, 'image' => $img);
-}
-
-
-/* End of file captcha_pi.php */
-/* Location: ./system/plugins/captcha_pi.php */
\ No newline at end of file