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display captcha (live)

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This commit is contained in:
Claude 2012-06-09 22:30:09 +02:00
parent 2a901d31ec
commit c770119511
5 changed files with 188 additions and 176 deletions
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1
htdocs/application/config/routes.php
View File

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

4
htdocs/application/controllers/main.php
View File

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

308
htdocs/application/helpers/captcha_helper.php
View File

@ -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 * CodeIgniter
* *
@ -37,24 +46,35 @@
* @param string server path to font * @param string server path to font
* @return string * @return string
*/ */
if ( ! function_exists('create_captcha'))
if (!function_exists('create_captcha'))
{ {
function create_captcha($data = '', $img_path = '', $img_url = '', $font_path = '') function create_captcha($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 => $val) foreach ($defaults as $key => $val)
{ {
if ( ! is_array($data))
if (!is_array($data))
{ {
if ( ! isset($$key) OR $$key == '')
if (!isset($$key) OR $$key == '')
{ {
$$key = $val; $$key = $val;
} }
} }
else else
{ {
$$key = ( ! isset($data[$key])) ? $val : $data[$key]; $$key = (!isset($data[$key])) ? $val : $data[$key];
} }
} }
@ -63,76 +83,79 @@ if ( ! function_exists('create_captcha'))
return FALSE; return FALSE;
} }
if ( ! @is_dir($img_path)) if (!@is_dir($img_path))
{ {
return FALSE; return FALSE;
} }
if ( ! is_writable($img_path)) if (!is_writable($img_path))
{ {
return FALSE; return FALSE;
} }
if ( ! extension_loaded('gd')) if (!extension_loaded('gd'))
{ {
return FALSE; return FALSE;
} }
// ----------------------------------- // -----------------------------------
// Remove old images // Remove old images
// ----------------------------------- // -----------------------------------
list($usec, $sec) = explode(" ", microtime()); list($usec, $sec) = explode(" ", microtime());
$now = ((float)$usec + (float)$sec); $now = ((float)$usec + (float)$sec);
$current_dir = @opendir($img_path); $current_dir = @opendir($img_path);
while ($filename = @readdir($current_dir)) while ($filename = @readdir($current_dir))
{ {
if ($filename != "." and $filename != ".." and $filename != "index.html") if ($filename != "." and $filename != ".." and $filename != "index.html")
{ {
$name = str_replace(".jpg", "", $filename); $name = str_replace(".jpg", "", $filename);
if (($name + $expiration) < $now) if (($name + $expiration) < $now)
{ {
@unlink($img_path.$filename); @unlink($img_path . $filename);
} }
} }
} }
@closedir($current_dir); @closedir($current_dir);
// ----------------------------------- // -----------------------------------
// Do we have a "word" yet? // Do we have a "word" yet?
// ----------------------------------- // -----------------------------------
if ($word == '')
{ if ($word == '')
{
$pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'; $pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$str = ''; $str = '';
for ($i = 0; $i < 8; $i++) for ($i = 0;$i < 8;$i++)
{ {
$str .= substr($pool, mt_rand(0, strlen($pool) -1), 1); $str.= substr($pool, mt_rand(0, strlen($pool) - 1) , 1);
} }
$word = $str; $word = $str;
} }
// ----------------------------------- // -----------------------------------
// Determine angle and position // Determine angle and position
// ----------------------------------- // -----------------------------------
$length = strlen($word); $length = strlen($word);
$angle = ($length >= 6) ? rand(-($length-6), ($length-6)) : 0; $angle = ($length >= 6) ? rand(-($length - 6) , ($length - 6)) : 0;
$x_axis = rand(6, (360/$length)-16); $x_axis = rand(6, (360 / $length) - 16);
$y_axis = ($angle >= 0 ) ? rand($img_height, $img_width) : rand(6, $img_height); $y_axis = ($angle >= 0) ? rand($img_height, $img_width) : rand(6, $img_height);
// ----------------------------------- // -----------------------------------
// Create image // Create image
// ----------------------------------- // -----------------------------------
// PHP.net recommends imagecreatetruecolor(), but it isn't always available // PHP.net recommends imagecreatetruecolor(), but it isn't always available
if (function_exists('imagecreatetruecolor')) if (function_exists('imagecreatetruecolor'))
{ {
$im = imagecreatetruecolor($img_width, $img_height); $im = imagecreatetruecolor($img_width, $img_height);
@ -144,46 +167,49 @@ if ( ! function_exists('create_captcha'))
// ----------------------------------- // -----------------------------------
// Assign colors // Assign colors
// ----------------------------------- // -----------------------------------
$bg_color = imagecolorallocate ($im, 255, 255, 255); $bg_color = imagecolorallocate($im, 255, 255, 255);
$border_color = imagecolorallocate ($im, 153, 102, 102); $border_color = imagecolorallocate($im, 153, 102, 102);
$text_color = imagecolorallocate ($im, 204, 153, 153); $text_color = imagecolorallocate($im, 204, 153, 153);
$grid_color = imagecolorallocate($im, 255, 182, 182); $grid_color = imagecolorallocate($im, 255, 182, 182);
$shadow_color = imagecolorallocate($im, 255, 240, 240); $shadow_color = imagecolorallocate($im, 255, 240, 240);
// ----------------------------------- // -----------------------------------
// Create the rectangle // Create the rectangle
// ----------------------------------- // -----------------------------------
ImageFilledRectangle($im, 0, 0, $img_width, $img_height, $bg_color); ImageFilledRectangle($im, 0, 0, $img_width, $img_height, $bg_color);
// ----------------------------------- // -----------------------------------
// Create the spiral pattern // Create the spiral pattern
// ----------------------------------- // -----------------------------------
$theta = 1; $theta = 1;
$thetac = 7; $thetac = 7;
$radius = 16; $radius = 16;
$circles = 20; $circles = 20;
$points = 32; $points = 32;
for ($i = 0;$i < ($circles * $points) - 1;$i++)
for ($i = 0; $i < ($circles * $points) - 1; $i++)
{ {
$theta = $theta + $thetac; $theta = $theta + $thetac;
$rad = $radius * ($i / $points ); $rad = $radius * ($i / $points);
$x = ($rad * cos($theta)) + $x_axis; $x = ($rad * cos($theta)) + $x_axis;
$y = ($rad * sin($theta)) + $y_axis; $y = ($rad * sin($theta)) + $y_axis;
$theta = $theta + $thetac; $theta = $theta + $thetac;
$rad1 = $radius * (($i + 1) / $points); $rad1 = $radius * (($i + 1) / $points);
$x1 = ($rad1 * cos($theta)) + $x_axis; $x1 = ($rad1 * cos($theta)) + $x_axis;
$y1 = ($rad1 * sin($theta )) + $y_axis; $y1 = ($rad1 * sin($theta)) + $y_axis;
imageline($im, $x, $y, $x1, $y1, $grid_color); imageline($im, $x, $y, $x1, $y1, $grid_color);
$theta = $theta - $thetac; $theta = $theta - $thetac;
} }
// ----------------------------------- // -----------------------------------
// Write the text // Write the text
// ----------------------------------- // -----------------------------------
$use_font = ($font_path != '' AND file_exists($font_path) AND function_exists('imagettftext')) ? TRUE : FALSE; $use_font = ($font_path != '' AND file_exists($font_path) AND function_exists('imagettftext')) ? TRUE : FALSE;
@ -191,157 +217,136 @@ if ( ! function_exists('create_captcha'))
if ($use_font == FALSE) if ($use_font == FALSE)
{ {
$font_size = 5; $font_size = 5;
$x = rand(0, $img_width/($length/3)); $x = rand(0, $img_width / ($length / 3));
$y = 0; $y = 0;
} }
else else
{ {
$font_size = 16; $font_size = 16;
$x = rand(0, $img_width/($length/1.5)); $x = rand(0, $img_width / ($length / 1.5));
$y = $font_size+2; $y = $font_size + 2;
} }
for ($i = 0;$i < strlen($word);$i++)
for ($i = 0; $i < strlen($word); $i++)
{ {
if ($use_font == FALSE) if ($use_font == FALSE)
{ {
$y = rand(0 , $img_height/2); $y = rand(0, $img_height / 2);
imagestring($im, $font_size, $x, $y, substr($word, $i, 1), $text_color); imagestring($im, $font_size, $x, $y, substr($word, $i, 1) , $text_color);
$x += ($font_size*2); $x+= ($font_size * 2);
} }
else else
{ {
$y = rand($img_height/2, $img_height-3); $y = rand($img_height / 2, $img_height - 3);
imagettftext($im, $font_size, $angle, $x, $y, $text_color, $font_path, substr($word, $i, 1)); imagettftext($im, $font_size, $angle, $x, $y, $text_color, $font_path, substr($word, $i, 1));
$x += $font_size; $x+= $font_size;
} }
} }
// ----------------------------------- // -----------------------------------
// Create the border // Create the border
// ----------------------------------- // -----------------------------------
imagerectangle($im, 0, 0, $img_width-1, $img_height-1, $border_color); imagerectangle($im, 0, 0, $img_width - 1, $img_height - 1, $border_color);
// ----------------------------------- // -----------------------------------
// Generate the image // Generate the image
// ----------------------------------- // -----------------------------------
$img_name = $now.'.jpg'; $img_name = $now . '.jpg';
ImageJPEG($im, $img_path . $img_name);
ImageJPEG($im, $img_path.$img_name);
$img = "<img src=\"$img_url$img_name\" width=\"$img_width\" height=\"$img_height\" style=\"border:0;\" alt=\" \" />"; $img = "<img src=\"$img_url$img_name\" width=\"$img_width\" height=\"$img_height\" style=\"border:0;\" alt=\" \" />";
ImageDestroy($im); ImageDestroy($im);
return array(
return array('word' => $word, 'time' => $now, 'image' => $img); 'word' => $word,
'time' => $now,
'image' => $img
);
} }
} }
/** /**
* Display CAPTCHA * Display CAPTCHA
* *
* @access public * @access public
* @return string * @return string
*/ */
if ( ! function_exists('display_captcha'))
{
function display_captcha($data = '', $img_path = '', $img_url = '', $font_path = '')
{
$defaults = array('word' => '', 'img_path' => '', 'img_url' => '', 'img_width' => '150', 'img_height' => '30', 'font_path' => '', 'expiration' => 7200);
if (!function_exists('display_captcha'))
{
function display_captcha($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 => $val) foreach ($defaults as $key => $val)
{ {
if ( ! is_array($data))
if (!is_array($data))
{ {
if ( ! isset($$key) OR $$key == '')
if (!isset($$key) OR $$key == '')
{ {
$$key = $val; $$key = $val;
} }
} }
else else
{ {
$$key = ( ! isset($data[$key])) ? $val : $data[$key]; $$key = (!isset($data[$key])) ? $val : $data[$key];
} }
} }
if ($img_path == '' OR $img_url == '') if (!extension_loaded('gd'))
{ {
return FALSE; return FALSE;
} }
if ( ! @is_dir($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? // Do we have a "word" yet?
// ----------------------------------- // -----------------------------------
if ($word == '')
{ if ($word == '')
{
$pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'; $pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$str = ''; $str = '';
for ($i = 0; $i < 8; $i++) for ($i = 0;$i < 8;$i++)
{ {
$str .= substr($pool, mt_rand(0, strlen($pool) -1), 1); $str.= substr($pool, mt_rand(0, strlen($pool) - 1) , 1);
} }
$word = $str; $word = $str;
} }
// ----------------------------------- // -----------------------------------
// Determine angle and position // Determine angle and position
// ----------------------------------- // -----------------------------------
$length = strlen($word); $length = strlen($word);
$angle = ($length >= 6) ? rand(-($length-6), ($length-6)) : 0; $angle = ($length >= 6) ? rand(-($length - 6) , ($length - 6)) : 0;
$x_axis = rand(6, (360/$length)-16); $x_axis = rand(6, (360 / $length) - 16);
$y_axis = ($angle >= 0 ) ? rand($img_height, $img_width) : rand(6, $img_height); $y_axis = ($angle >= 0) ? rand($img_height, $img_width) : rand(6, $img_height);
// ----------------------------------- // -----------------------------------
// Create image // Create image
// ----------------------------------- // -----------------------------------
// PHP.net recommends imagecreatetruecolor(), but it isn't always available // PHP.net recommends imagecreatetruecolor(), but it isn't always available
if (function_exists('imagecreatetruecolor')) if (function_exists('imagecreatetruecolor'))
{ {
$im = imagecreatetruecolor($img_width, $img_height); $im = imagecreatetruecolor($img_width, $img_height);
@ -353,46 +358,49 @@ if ( ! function_exists('display_captcha'))
// ----------------------------------- // -----------------------------------
// Assign colors // Assign colors
// ----------------------------------- // -----------------------------------
$bg_color = imagecolorallocate ($im, 255, 255, 255); $bg_color = imagecolorallocate($im, 255, 255, 255);
$border_color = imagecolorallocate ($im, 153, 102, 102); $border_color = imagecolorallocate($im, 153, 102, 102);
$text_color = imagecolorallocate ($im, 204, 153, 153); $text_color = imagecolorallocate($im, 204, 153, 153);
$grid_color = imagecolorallocate($im, 255, 182, 182); $grid_color = imagecolorallocate($im, 255, 182, 182);
$shadow_color = imagecolorallocate($im, 255, 240, 240); $shadow_color = imagecolorallocate($im, 255, 240, 240);
// ----------------------------------- // -----------------------------------
// Create the rectangle // Create the rectangle
// ----------------------------------- // -----------------------------------
ImageFilledRectangle($im, 0, 0, $img_width, $img_height, $bg_color); ImageFilledRectangle($im, 0, 0, $img_width, $img_height, $bg_color);
// ----------------------------------- // -----------------------------------
// Create the spiral pattern // Create the spiral pattern
// ----------------------------------- // -----------------------------------
$theta = 1; $theta = 1;
$thetac = 7; $thetac = 7;
$radius = 16; $radius = 16;
$circles = 20; $circles = 20;
$points = 32; $points = 32;
for ($i = 0;$i < ($circles * $points) - 1;$i++)
for ($i = 0; $i < ($circles * $points) - 1; $i++)
{ {
$theta = $theta + $thetac; $theta = $theta + $thetac;
$rad = $radius * ($i / $points ); $rad = $radius * ($i / $points);
$x = ($rad * cos($theta)) + $x_axis; $x = ($rad * cos($theta)) + $x_axis;
$y = ($rad * sin($theta)) + $y_axis; $y = ($rad * sin($theta)) + $y_axis;
$theta = $theta + $thetac; $theta = $theta + $thetac;
$rad1 = $radius * (($i + 1) / $points); $rad1 = $radius * (($i + 1) / $points);
$x1 = ($rad1 * cos($theta)) + $x_axis; $x1 = ($rad1 * cos($theta)) + $x_axis;
$y1 = ($rad1 * sin($theta )) + $y_axis; $y1 = ($rad1 * sin($theta)) + $y_axis;
imageline($im, $x, $y, $x1, $y1, $grid_color); imageline($im, $x, $y, $x1, $y1, $grid_color);
$theta = $theta - $thetac; $theta = $theta - $thetac;
} }
// ----------------------------------- // -----------------------------------
// Write the text // Write the text
// ----------------------------------- // -----------------------------------
$use_font = ($font_path != '' AND file_exists($font_path) AND function_exists('imagettftext')) ? TRUE : FALSE; $use_font = ($font_path != '' AND file_exists($font_path) AND function_exists('imagettftext')) ? TRUE : FALSE;
@ -400,52 +408,52 @@ if ( ! function_exists('display_captcha'))
if ($use_font == FALSE) if ($use_font == FALSE)
{ {
$font_size = 5; $font_size = 5;
$x = rand(0, $img_width/($length/3)); $x = rand(0, $img_width / ($length / 3));
$y = 0; $y = 0;
} }
else else
{ {
$font_size = 16; $font_size = 16;
$x = rand(0, $img_width/($length/1.5)); $x = rand(0, $img_width / ($length / 1.5));
$y = $font_size+2; $y = $font_size + 2;
} }
for ($i = 0;$i < strlen($word);$i++)
for ($i = 0; $i < strlen($word); $i++)
{ {
if ($use_font == FALSE) if ($use_font == FALSE)
{ {
$y = rand(0 , $img_height/2); $y = rand(0, $img_height / 2);
imagestring($im, $font_size, $x, $y, substr($word, $i, 1), $text_color); imagestring($im, $font_size, $x, $y, substr($word, $i, 1) , $text_color);
$x += ($font_size*2); $x+= ($font_size * 2);
} }
else else
{ {
$y = rand($img_height/2, $img_height-3); $y = rand($img_height / 2, $img_height - 3);
imagettftext($im, $font_size, $angle, $x, $y, $text_color, $font_path, substr($word, $i, 1)); imagettftext($im, $font_size, $angle, $x, $y, $text_color, $font_path, substr($word, $i, 1));
$x += $font_size; $x+= $font_size;
} }
} }
// ----------------------------------- // -----------------------------------
// Create the border // Create the border
// ----------------------------------- // -----------------------------------
imagerectangle($im, 0, 0, $img_width-1, $img_height-1, $border_color); imagerectangle($im, 0, 0, $img_width - 1, $img_height - 1, $border_color);
// ----------------------------------- // -----------------------------------
// Generate the image // Generate the image
// ----------------------------------- // -----------------------------------
$img_name = $now.'.jpg'; $img_name = $now . '.jpg';
echo ImageJPEG($im); echo ImageJPEG($im);
ImageDestroy($im); ImageDestroy($im);
} }
} }
// ------------------------------------------------------------------------ // ------------------------------------------------------------------------
/* End of file captcha_helper.php */ /* End of file captcha_helper.php */
/* Location: ./system/heleprs/captcha_helper.php */ /* Location: ./system/heleprs/captcha_helper.php */

2
htdocs/application/views/defaults/paste_form.php
View File

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

3
htdocs/application/views/view/captcha.php
View File

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