-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');\r
-/**\r
- * CodeIgniter\r
- *\r
- * An open source application development framework for PHP 4.3.2 or newer\r
- *\r
- * @package CodeIgniter\r
- * @author ExpressionEngine Dev Team\r
- * @copyright Copyright (c) 2008, EllisLab, Inc.\r
- * @license http://codeigniter.com/user_guide/license.html\r
- * @link http://codeigniter.com\r
- * @since Version 1.0\r
- * @filesource\r
- */\r
-\r
-// ------------------------------------------------------------------------\r
-\r
-/*\r
-Instructions:\r
-\r
-Load the plugin using:\r
-\r
- $this->load->plugin('captcha');\r
-\r
-Once loaded you can generate a captcha like this:\r
- \r
- $vals = array(\r
- 'word' => 'Random word',\r
- 'img_path' => './captcha/',\r
- 'img_url' => 'http://example.com/captcha/',\r
- 'font_path' => './system/fonts/texb.ttf',\r
- 'img_width' => '150',\r
- 'img_height' => 30,\r
- 'expiration' => 7200\r
- );\r
- \r
- $cap = create_captcha($vals);\r
- echo $cap['image'];\r
- \r
-\r
-NOTES:\r
- \r
- The captcha function requires the GD image library.\r
- \r
- Only the img_path and img_url are required.\r
- \r
- If a "word" is not supplied, the function will generate a random\r
- ASCII string. You might put together your own word library that\r
- you can draw randomly from.\r
- \r
- If you do not specify a path to a TRUE TYPE font, the native ugly GD\r
- font will be used.\r
- \r
- The "captcha" folder must be writable (666, or 777)\r
- \r
- The "expiration" (in seconds) signifies how long an image will\r
- remain in the captcha folder before it will be deleted. The default\r
- is two hours.\r
-\r
-RETURNED DATA\r
-\r
-The create_captcha() function returns an associative array with this data:\r
-\r
- [array]\r
- (\r
- 'image' => IMAGE TAG\r
- 'time' => TIMESTAMP (in microtime)\r
- 'word' => CAPTCHA WORD\r
- )\r
-\r
-The "image" is the actual image tag:\r
-<img src="http://example.com/captcha/12345.jpg" width="140" height="50" />\r
-\r
-The "time" is the micro timestamp used as the image name without the file\r
-extension. It will be a number like this: 1139612155.3422\r
-\r
-The "word" is the word that appears in the captcha image, which if not\r
-supplied to the function, will be a random string.\r
-\r
-\r
-ADDING A DATABASE\r
-\r
-In order for the captcha function to prevent someone from posting, you will need\r
-to add the information returned from create_captcha() function to your database.\r
-Then, when the data from the form is submitted by the user you will need to verify\r
-that the data exists in the database and has not expired.\r
-\r
-Here is a table prototype:\r
-\r
- CREATE TABLE captcha (\r
- captcha_id bigint(13) unsigned NOT NULL auto_increment,\r
- captcha_time int(10) unsigned NOT NULL,\r
- ip_address varchar(16) default '0' NOT NULL,\r
- word varchar(20) NOT NULL,\r
- PRIMARY KEY `captcha_id` (`captcha_id`),\r
- KEY `word` (`word`)\r
- )\r
-\r
-\r
-Here is an example of usage with a DB.\r
-\r
-On the page where the captcha will be shown you'll have something like this:\r
-\r
- $this->load->plugin('captcha');\r
- $vals = array(\r
- 'img_path' => './captcha/',\r
- 'img_url' => 'http://example.com/captcha/'\r
- );\r
- \r
- $cap = create_captcha($vals);\r
-\r
- $data = array(\r
- 'captcha_id' => '',\r
- 'captcha_time' => $cap['time'],\r
- 'ip_address' => $this->input->ip_address(),\r
- 'word' => $cap['word']\r
- );\r
-\r
- $query = $this->db->insert_string('captcha', $data);\r
- $this->db->query($query);\r
- \r
- echo 'Submit the word you see below:';\r
- echo $cap['image'];\r
- echo '<input type="text" name="captcha" value="" />';\r
-\r
-\r
-Then, on the page that accepts the submission you'll have something like this:\r
-\r
- // First, delete old captchas\r
- $expiration = time()-7200; // Two hour limit\r
- $DB->query("DELETE FROM captcha WHERE captcha_time < ".$expiration); \r
-\r
- // Then see if a captcha exists:\r
- $sql = "SELECT COUNT(*) AS count FROM captcha WHERE word = ? AND ip_address = ? AND date > ?";\r
- $binds = array($_POST['captcha'], $this->input->ip_address(), $expiration);\r
- $query = $this->db->query($sql, $binds);\r
- $row = $query->row();\r
-\r
- if ($row->count == 0)\r
- {\r
- echo "You must submit the word that appears in the image";\r
- }\r
-\r
-*/\r
-\r
-\r
- \r
-/**\r
-|==========================================================\r
-| Create Captcha\r
-|==========================================================\r
-|\r
-*/\r
-function create_captcha($data = '', $img_path = '', $img_url = '', $font_path = '')\r
-{ \r
- $defaults = array('word' => '', 'img_path' => '', 'img_url' => '', 'img_width' => '150', 'img_height' => '30', 'font_path' => '', 'expiration' => 7200); \r
- \r
- foreach ($defaults as $key => $val)\r
- {\r
- if ( ! is_array($data))\r
- {\r
- if ( ! isset($$key) OR $$key == '')\r
- {\r
- $$key = $val;\r
- }\r
- }\r
- else\r
- { \r
- $$key = ( ! isset($data[$key])) ? $val : $data[$key];\r
- }\r
- }\r
- \r
- if ($img_path == '' OR $img_url == '')\r
- {\r
- return FALSE;\r
- }\r
-\r
- if ( ! @is_dir($img_path))\r
- {\r
- return FALSE;\r
- }\r
- \r
- if ( ! is_really_writable($img_path))\r
- {\r
- return FALSE;\r
- }\r
- \r
- if ( ! extension_loaded('gd'))\r
- {\r
- return FALSE;\r
- } \r
- \r
- // -----------------------------------\r
- // Remove old images \r
- // -----------------------------------\r
- \r
- list($usec, $sec) = explode(" ", microtime());\r
- $now = ((float)$usec + (float)$sec);\r
- \r
- $current_dir = @opendir($img_path);\r
- \r
- while($filename = @readdir($current_dir))\r
- {\r
- if ($filename != "." and $filename != ".." and $filename != "index.html")\r
- {\r
- $name = str_replace(".jpg", "", $filename);\r
- \r
- if (($name + $expiration) < $now)\r
- {\r
- @unlink($img_path.$filename);\r
- }\r
- }\r
- }\r
- \r
- @closedir($current_dir);\r
-\r
- // -----------------------------------\r
- // Do we have a "word" yet?\r
- // -----------------------------------\r
- \r
- if ($word == '')\r
- {\r
- $pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';\r
-\r
- $str = '';\r
- for ($i = 0; $i < 8; $i++)\r
- {\r
- $str .= substr($pool, mt_rand(0, strlen($pool) -1), 1);\r
- }\r
- \r
- $word = $str;\r
- }\r
- \r
- // -----------------------------------\r
- // Determine angle and position \r
- // -----------------------------------\r
- \r
- $length = strlen($word);\r
- $angle = ($length >= 6) ? rand(-($length-6), ($length-6)) : 0;\r
- $x_axis = rand(6, (360/$length)-16); \r
- $y_axis = ($angle >= 0 ) ? rand($img_height, $img_width) : rand(6, $img_height);\r
- \r
- // -----------------------------------\r
- // Create image\r
- // -----------------------------------\r
- \r
- // PHP.net recommends imagecreatetruecolor(), but it isn't always available\r
- if (function_exists('imagecreatetruecolor'))\r
- {\r
- $im = imagecreatetruecolor($img_width, $img_height);\r
- }\r
- else\r
- {\r
- $im = imagecreate($img_width, $img_height);\r
- }\r
- \r
- // -----------------------------------\r
- // Assign colors\r
- // -----------------------------------\r
- \r
- $bg_color = imagecolorallocate ($im, 255, 255, 255);\r
- $border_color = imagecolorallocate ($im, 153, 102, 102);\r
- $text_color = imagecolorallocate ($im, 204, 153, 153);\r
- $grid_color = imagecolorallocate($im, 255, 182, 182);\r
- $shadow_color = imagecolorallocate($im, 255, 240, 240);\r
-\r
- // -----------------------------------\r
- // Create the rectangle\r
- // -----------------------------------\r
- \r
- ImageFilledRectangle($im, 0, 0, $img_width, $img_height, $bg_color);\r
- \r
- // -----------------------------------\r
- // Create the spiral pattern\r
- // -----------------------------------\r
- \r
- $theta = 1;\r
- $thetac = 7;\r
- $radius = 16;\r
- $circles = 20;\r
- $points = 32;\r
-\r
- for ($i = 0; $i < ($circles * $points) - 1; $i++)\r
- {\r
- $theta = $theta + $thetac;\r
- $rad = $radius * ($i / $points );\r
- $x = ($rad * cos($theta)) + $x_axis;\r
- $y = ($rad * sin($theta)) + $y_axis;\r
- $theta = $theta + $thetac;\r
- $rad1 = $radius * (($i + 1) / $points);\r
- $x1 = ($rad1 * cos($theta)) + $x_axis;\r
- $y1 = ($rad1 * sin($theta )) + $y_axis;\r
- imageline($im, $x, $y, $x1, $y1, $grid_color);\r
- $theta = $theta - $thetac;\r
- }\r
-\r
- // -----------------------------------\r
- // Write the text\r
- // -----------------------------------\r
- \r
- $use_font = ($font_path != '' AND file_exists($font_path) AND function_exists('imagettftext')) ? TRUE : FALSE;\r
- \r
- if ($use_font == FALSE)\r
- {\r
- $font_size = 5;\r
- $x = rand(0, $img_width/($length/3));\r
- $y = 0;\r
- }\r
- else\r
- {\r
- $font_size = 16;\r
- $x = rand(0, $img_width/($length/1.5));\r
- $y = $font_size+2;\r
- }\r
-\r
- for ($i = 0; $i < strlen($word); $i++)\r
- {\r
- if ($use_font == FALSE)\r
- {\r
- $y = rand(0 , $img_height/2);\r
- imagestring($im, $font_size, $x, $y, substr($word, $i, 1), $text_color);\r
- $x += ($font_size*2);\r
- }\r
- else\r
- { \r
- $y = rand($img_height/2, $img_height-3);\r
- imagettftext($im, $font_size, $angle, $x, $y, $text_color, $font_path, substr($word, $i, 1));\r
- $x += $font_size;\r
- }\r
- }\r
- \r
-\r
- // -----------------------------------\r
- // Create the border\r
- // -----------------------------------\r
-\r
- imagerectangle($im, 0, 0, $img_width-1, $img_height-1, $border_color); \r
-\r
- // -----------------------------------\r
- // Generate the image\r
- // -----------------------------------\r
- \r
- $img_name = $now.'.jpg';\r
-\r
- ImageJPEG($im, $img_path.$img_name);\r
- \r
- $img = "<img src=\"$img_url$img_name\" width=\"$img_width\" height=\"$img_height\" style=\"border:0;\" alt=\" \" />";\r
- \r
- ImageDestroy($im);\r
- \r
- return array('word' => $word, 'time' => $now, 'image' => $img);\r
-}\r
-\r
-\r
-/* End of file captcha_pi.php */\r
+<?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, 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' => './system/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_id' => '',
+ '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
+ $DB->query("DELETE FROM captcha WHERE captcha_time < ".$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_really_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
git://git.onelab.eu / www-register-wizard.git / blobdiff