No Truetypefont available for the CaptchaClass. Error!

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KevUK2K
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Posts: 4
Joined: Sat Oct 01, 2005 7:52 am
Location: UK

No Truetypefont available for the CaptchaClass. Error!

Post by KevUK2K »

I have installed a script for letting visitors add their url to my directory and search engine but when the second page loads to prevent robot submissions I get the error message No Truetypefont available for the CaptchaClass. Can anyone please tell me how to fix this?

Thnx,

Kev
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feyd
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Posts: 31559
Joined: Mon Mar 29, 2004 3:24 pm
Location: Bothell, Washington, USA

Post by feyd »

give it a true type font?
KevUK2K
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Posts: 4
Joined: Sat Oct 01, 2005 7:52 am
Location: UK

Post by KevUK2K »

I thought I had. http://theorangepages.com/pi.php I put in a TTF file and thougt that was all I needed to do. Don't beat me up for being a newbie, we all had to start somewhere! :-o

Kev
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feyd
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Location: Bothell, Washington, USA

Post by feyd »

Since I don't know which particular Captcha implementation you are using, I'll hazard a guess at there should either be configuration settings either within the script that houses the class, or in a separate file. At any rate, the class's package should have made some allusions to how to give it at least one true type font to use...
KevUK2K
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Posts: 4
Joined: Sat Oct 01, 2005 7:52 am
Location: UK

Post by KevUK2K »

feyd | Please use

Code: Select all

and

Code: Select all

tags where appropriate when posting code. Read:  [url=http://forums.devnetwork.net/viewtopic.php?t=21171]Posting Code in the Forums[/url][/color]


Would this help?

Code: Select all

<style type="text/css">
<!--
.captcha {
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: 12px;
}
.captcha_1 {
	font-family: Verdana, Arial, Helvetica, sans-serif;
	font-size: 12px;
}
-->
</style>
<?php
/**
  * PHP-Class hn_captcha Version 1.2, released 16-Apr-2004
  * Author: Horst Nogajski, horst@nogajski.de
  * 
  * License: GNU GPL (http://www.opensource.org/licenses/gpl-license.html)
  * Download: http://hn273.users.phpclasses.org/brows ... /1569.html
  *
  * If you find it useful, you might rate it on http://www.phpclasses.org/rate.html?package=1569
  * If you use this class in a productional environment, you might drop me a note, so I can add a link to the page.
  *
  **/

/**
  * changes in version 1.1:
  *  - added a new configuration-variable: maxrotation
  *  - added a new configuration-variable: secretstring
  *  - modified function get_try(): now ever returns a string of 16 chars
  *
  * changes in version 1.2:
  *  - added a new configuration-variable: secretposition
  *  - once more modified the function get_try(): generate a string of 32 chars length,
  *    where at secretposition is the number of current-try.
  *    Hopefully this is enough for hackprevention.
  *
  **/

/**
  * License: GNU GPL (http://www.opensource.org/licenses/gpl-license.html)
  * 
  * This program is free software;
  * 
  * you can redistribute it 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 more details.
  *
  * You should have received a copy of the GNU General Public License along with this program;
  * if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  *
  **/


/**
  * Tabsize: 4
  * 
  **/

/**
  * This class generates a picture to use in forms that perform CAPTCHA test
  * (Completely Automated Public Turing to tell Computers from Humans Apart).
  * After the test form is submitted a key entered by the user in a text field
  * is compared by the class to determine whether it matches the text in the picture.
  * 
  * The class is a fork of the original released at http://www.phpclasses.org
  * by Julien Pachet with the name ocr_captcha.
  * 
  * The following enhancements were added:
  * 
  * - Support to make it work with GD library before version 2
  * - Hacking prevention
  * - Optional use of Web safe colors
  * - Limit the number of users attempts
  * - Display an optional refresh link to generate a new picture with a different key
  *   without counting to the user attempts limit verification
  * - Support the use of multiple random TrueType fonts
  * - Control the output image by only three parameters: number of text characters
  *   and minimum and maximum size preserving the size proportion
  * - Preserve all request parameters passed to the page via the GET method,
  *   so the CAPTCHA test can be added to existing scripts with minimal changes
  * - Added a debug option for testing the current configuration
  * 
  * All the configuration settings are passed to the class in an array when the object instance is initialized.
  * 
  * The class only needs two function calls to be used: display_form() and validate_submit(). 
  * 
  * The class comes with an examplefile.
  * If you don't have it: http://hn273.users.phpclasses.org/brows ... /1569.html
  * 
  * @shortdesc Class that generate a captcha-image with text and a form to fill in this text
  * @public
  * @author Horst Nogajski, (mail: horst@nogajski.de)
  * @version 1.0
  * @date 2004-April-10
  * 
  **/
class hn_captcha
{

	////////////////////////////////
	//
	//	PUBLIC PARAMS
	//

		/**
		  * @shortdesc Absolute path to a Tempfolder (with trailing slash!). This must be writeable for PHP and also accessible via HTTP, because the image will be stored there.
          * @type string
		  * @public
          *
          **/
		var $tempfolder;

		/**
          * @shortdesc Absolute path to folder with TrueTypeFonts (with trailing slash!). This must be readable by PHP.
		  * @type string
		  * @public
          *
          **/
		var $TTF_folder;

		/**
          * @shortdesc A List with available TrueTypeFonts for random char-creation.
		  * @type mixed[array|string]
		  * @public
          *
          **/
		var $TTF_RANGE  = array('COMIC.TTF','JACOBITE.TTF','LYDIAN.TTF','MREARL.TTF','RUBBERSTAMP.TTF','ZINJARON.TTF');

		/**
          * @shortdesc How many chars the generated text should have
		  * @type integer
		  * @public
          *
          **/
		var $chars		= 6;

		/**
          * @shortdesc The minimum size a Char should have
		  * @type integer
		  * @public
          *
          **/
		var $minsize	= 20;

		/**
          * @shortdesc The maximum size a Char can have
		  * @type integer
		  * @public
          *
          **/
		var $maxsize	= 40;

		/**
          * @shortdesc The maximum degrees a Char should be rotated. Set it to 30 means a random rotation between -30 and 30.
		  * @type integer
		  * @public
          *
          **/
		var $maxrotation = 30;

		/**
          * @shortdesc Background noise On/Off (if is Off, a grid will be created)
		  * @type boolean
		  * @public
          *
          **/
		var $noise		= TRUE;

		/**
          * @shortdesc This will only use the 216 websafe color pallette for the image.
		  * @type boolean
		  * @public
          *
          **/
		var $websafecolors = FALSE;

		/**
          * @shortdesc Switches language, available are 'en' and 'de'. You can easily add more. Look in CONSTRUCTOR.
		  * @type string
		  * @public
          *
          **/
		var $lang		= "de";

		/**
          * @shortdesc If a user has reached this number of try's without success, he will moved to the $badguys_url
		  * @type integer
		  * @public
          *
          **/
		var $maxtry		= 3;

		/**
          * @shortdesc Gives the user the possibility to generate a new captcha-image.
		  * @type boolean
		  * @public
          *
          **/
		var $refreshlink = TRUE;

		/**
          * @shortdesc If a user has reached his maximum try's, he will located to this url.
		  * @type boolean
		  * @public
          *
          **/
		var $badguys_url = "/";

		/**
		  * Number between 1 and 32
          * 
          * @shortdesc Defines the position of 'current try number' in (32-char-length)-string generated by function get_try()
		  * @type integer
		  * @public
          *
          **/
		var $secretposition = 21;

		/**
          * @shortdesc The string is used to generate the md5-key.
		  * @type string
		  * @public
          *
          **/
		var $secretstring = "This is a very secret string. Nobody should know it, =:)";

		/**
          * @shortdesc Outputs configuration values for testing
		  * @type boolean
		  * @public
          *
          **/
		var $debug = FALSE;



	////////////////////////////////
	//
	//	PRIVATE PARAMS
	//

		/** @private **/
		var $lx;				// width of picture
		/** @private **/
		var $ly;				// height of picture
		/** @private **/
		var $jpegquality = 80;	// image quality
		/** @private **/
		var $noisefactor = 9;	// this will multiplyed with number of chars
		/** @private **/
		var $nb_noise;			// number of background-noise-characters
		/** @private **/
		var $TTF_file;			// holds the current selected TrueTypeFont
		/** @private **/
		var $msg1;
		/** @private **/
		var $msg2;
		/** @private **/
		var $buttontext;
		/** @private **/
		var $refreshbuttontext;
		/** @private **/
		var $public_K;
		/** @private **/
		var $private_K;
		/** @private **/
		var $key;				// md5-key
		/** @private **/
		var $public_key;    	// public key
		/** @private **/
		var $filename;			// filename of captcha picture
		/** @private **/
		var $gd_version;		// holds the Version Number of GD-Library
		/** @private **/
		var $QUERY_STRING;		// keeps the ($_GET) Querystring of the original Request
		/** @private **/
		var $current_try = 0;
		/** @private **/
		var $r;
		/** @private **/
		var $g;
		/** @private **/
		var $b;


	////////////////////////////////
	//
	//	CONSTRUCTOR
	//

		/**
		  * @shortdesc Extracts the config array and generate needed params.
		  * @private
		  * @type void
		  * @return nothing
		  *
		  **/
		function hn_captcha($config,$secure=TRUE)
		{

			// Test for GD-Library(-Version)
			$this->gd_version = $this->get_gd_version();
			if($this->gd_version == 0) die("There is no GD-Library-Support enabled. The Captcha-Class cannot be used!");
			if($this->debug) echo "\n<br>-Captcha-Debug: The available GD-Library has major version ".$this->gd_version;


			// Hackprevention
			if(
				(isset($_GET['maxtry']) || isset($_POST['maxtry']) || isset($_COOKIE['maxtry']))
				||
				(isset($_GET['debug']) || isset($_POST['debug']) || isset($_COOKIE['debug']))
				||
				(isset($_GET['captcharefresh']) || isset($_COOKIE['captcharefresh']))
				||
				(isset($_POST['captcharefresh']) && isset($_POST['private_key']))
				)
			{
				if($this->debug) echo "\n<br>-Captcha-Debug: Buuh. You are a bad guy!";
				if(isset($this->badguys_url) && !headers_sent()) header('location: '.$this->badguys_url);
				else die('Sorry.');
			}


			// extracts config array
			if(is_array($config))
			{
				if($secure && strcmp('4.2.0', phpversion()) < 0)
				{
					if($this->debug) echo "\n<br>-Captcha-Debug: Extracts Config-Array in secure-mode!";
					$valid = get_class_vars(get_class($this));
					foreach($config as $k=>$v)
					{
						if(array_key_exists($k,$valid)) $this->$k = $v;
					}
				}
				else
				{
					if($this->debug) echo "\n<br>-Captcha-Debug: Extracts Config-Array in unsecure-mode!";
					foreach($config as $k=>$v) $this->$k = $v;
				}
			}


			// check vars for maxtry, secretposition and min-max-size
			$this->maxtry = ($this->maxtry > 9 || $this->maxtry < 1) ? 3 : $this->maxtry;
			$this->secretposition = ($this->secretposition > 32 || $this->secretposition < 1) ? $this->maxtry : $this->secretposition;
			if($this->minsize > $this->maxsize)
			{
				$temp = $this->minsize;
				$this->minsize = $this->maxsize;
				$this->maxsize = $temp;
				if($this->debug) echo "<br>-Captcha-Debug: Arrghh! What do you think I mean with min and max? Switch minsize with maxsize.";
			}


			// check TrueTypeFonts
			if(is_array($this->TTF_RANGE))
			{
				if($this->debug) echo "\n<br>-Captcha-Debug: Check given TrueType-Array! (".count($this->TTF_RANGE).")";
				$temp = array();
				foreach($this->TTF_RANGE as $k=>$v)
				{
					if(is_readable($this->TTF_folder.$v)) $temp[] = $v;
				}
				$this->TTF_RANGE = $temp;
				if($this->debug) echo "\n<br>-Captcha-Debug: Valid TrueType-files: (".count($this->TTF_RANGE).")";
				if(count($this->TTF_RANGE) < 1) die('No Truetypefont available for the CaptchaClass.');
			}
			else
			{
				if($this->debug) echo "\n<br>-Captcha-Debug: Check given TrueType-File! (".$this->TTF_RANGE.")";
				if(!is_readable($this->TTF_folder.$this->TTF_RANGE)) die('No Truetypefont available for the CaptchaClass.');
			}

			// select first TrueTypeFont
			$this->change_TTF();
			if($this->debug) echo "\n<br>-Captcha-Debug: Set current TrueType-File: (".$this->TTF_file.")";


			// get number of noise-chars for background if is enabled
			$this->nb_noise = $this->noise ? ($this->chars * $this->noisefactor) : 0;
			if($this->debug) echo "\n<br>-Captcha-Debug: Set number of noise characters to: (".$this->nb_noise.")";


			// set dimension of image
			$this->lx = ($this->chars + 1) * (int)(($this->maxsize + $this->minsize) / 1.5);
			$this->ly = (int)(2.4 * $this->maxsize);
			if($this->debug) echo "\n<br>-Captcha-Debug: Set image dimension to: (".$this->lx." x ".$this->ly.")";


			// set all messages
			// (if you add a new language, you also want to add a line to the function "notvalid_msg()" at the end of the class!)
			$this->messages = array(
				'de'=>array(
							'msg1'=>'Du mußt die <b>'.$this->chars.' Zeichen</b> im Bild, (Zahlen&nbsp;von&nbsp;<b>0&nbsp;-&nbsp;9</b> und Buchstaben&nbsp;von&nbsp;<b>A&nbsp;-&nbsp;F</b>),<br>in das Feld eintragen und das Formular abschicken um den Download zu starten.',
							'msg2'=>'Ohje, das kann ich nicht lesen. Bitte, generiere mir eine ',
							'buttontext'=>'abschicken',
							'refreshbuttontext'=>'neue ID'
							),
				'en'=>array(
							'msg1'=>'You must read and type the <b>'.$this->chars.' chars</b> within <b>0..9</b> and <b>A..F</b>, and submit the form.',
							'msg2'=>'If you can not read the image above, please ',
							'buttontext'=>'submit',
							'refreshbuttontext'=>'Generate new image'
							)
			);
			$this->msg1 = $this->messages[$this->lang]['msg1'];
			$this->msg2 = $this->messages[$this->lang]['msg2'];
			$this->buttontext = $this->messages[$this->lang]['buttontext'];
			$this->refreshbuttontext = $this->messages[$this->lang]['refreshbuttontext'];
			if($this->debug) echo "\n<br>-Captcha-Debug: Set messages to language: (".$this->lang.")";


			// keep params from original GET-request
			// (if you use POST or COOKIES, you have to implement it yourself, sorry.)
			$this->QUERY_STRING = strlen(trim($_SERVER['QUERY_STRING'])) > 0 ? '?'.strip_tags($_SERVER['QUERY_STRING']) : '';
			$refresh = $_SERVER['PHP_SELF'].$this->QUERY_STRING;
			if($this->debug) echo "\n<br>-Captcha-Debug: Keep this params from original GET-request: (".$this->QUERY_STRING.")";


			// check Postvars
			if(isset($_POST['public_key']))  $this->public_K = substr(strip_tags($_POST['public_key']),0,$this->chars);
			if(isset($_POST['private_key'])) $this->private_K = substr(strip_tags($_POST['private_key']),0,$this->chars);
			$this->current_try = isset($_POST['hncaptcha']) ? $this->get_try() : 0;
			if(!isset($_POST['captcharefresh'])) $this->current_try++;
			if($this->debug) echo "\n<br>-Captcha-Debug: Check POST-vars, current try is: (".$this->current_try.")";


			// generate Keys
			$this->key = md5($this->secretstring);
			$this->public_key = substr(md5(uniqid(rand(),true)), 0, $this->chars);
			if($this->debug) echo "\n<br>-Captcha-Debug: Generate Keys, public key is: (".$this->public_key.")";

		}



	////////////////////////////////
	//
	//	PUBLIC METHODS
	//

		/**
		  *
		  * @shortdesc displays a complete form with captcha-picture
		  * @public
		  * @type void
		  * @return HTML-Output
		  *
		  **/
		function display_form()
		{
			$try = $this->get_try(FALSE);
			if($this->debug) echo "\n<br>-Captcha-Debug: Generate a string which contains current try: ($try)";
			$s  = '<div id="captcha">';
			$s .= '<form class="captcha" name="captcha1" action="'.$_SERVER['PHP_SELF'].$this->QUERY_STRING.'" method="POST">'."\n";
			$s .= '<input type="hidden" name="hncaptcha" value="'.$try.'">'."\n";
			$s .= '<p class="captcha_notvalid">'.$this->notvalid_msg().'</p>';
			$s .= '<p class="captcha_1">'.$this->display_captcha()."</p>\n";
			$s .= '<p class="captcha_1">'.$this->msg1.'</p>';
			$s .= '<p class="captcha_1"><input class="captcha" type="text" name="private_key" value="" maxlength="'.$this->chars.'" size="'.$this->chars.'">&nbsp;&nbsp;';
			$s .= '<input class="submit" type="submit" value="'.$this->buttontext.'">'."</p>\n";
			$s .= '</form>'."\n";
			if($this->refreshlink)
			{
				$s .= '<form style="display:inline;" name="captcha2" action="'.$_SERVER['PHP_SELF'].$this->QUERY_STRING.'" method="POST">'."\n";
				$s .= '<input type="hidden" name="captcharefresh" value="1"><input type="hidden" name="hncaptcha" value="'.$try.'">'."\n";
				$s .= '<p class="captcha_1">'.$this->msg2;
				$s .= $this->public_key_input().'<input class="submit" type="submit" value="'.$this->refreshbuttontext.'">'."</p>\n";
				$s .= '</form>'."\n";
			}
			$s .= '</div>';
			if($this->debug) echo "\n<br>-Captcha-Debug: Output Form with captcha-image.<br><br>";
			return $s;
		}


		/**
		  *
		  * @shortdesc validates POST-vars and return result
		  * @public
		  * @type integer
		  * @return 0 = first call | 1 = valid submit | 2 = not valid | 3 = not valid and has reached maximum try's
		  *
		  **/
		function validate_submit()
		{
			if($this->check_captcha($this->public_K,$this->private_K))
			{
				if($this->debug) echo "\n<br>-Captcha-Debug: Validating submitted form returns: (1)";
				return 1;
			}
			else
			{
				if($this->current_try > $this->maxtry)
				{
					if($this->debug) echo "\n<br>-Captcha-Debug: Validating submitted form returns: (3)";
					return 3;
				}
				elseif($this->current_try > 0)
				{
					if($this->debug) echo "\n<br>-Captcha-Debug: Validating submitted form returns: (2)";
					return 2;
				}
				else
				{
					if($this->debug) echo "\n<br>-Captcha-Debug: Validating submitted form returns: (0)";
					return 0;
				}
			}
		}



	////////////////////////////////
	//
	//	PRIVATE METHODS
	//

		/** @private **/
		function display_captcha($onlyTheImage=FALSE)
		{
			$this->make_captcha();
			$is = getimagesize($this->get_filename());
			if($onlyTheImage) return "\n".'<img class="captchapict" src="'.$this->get_filename_url().'" '.$is[3].' alt="This is a captcha-picture. It is used to prevent mass-access by robots. (see: http://www.captcha.net)" title="">'."\n";
			else return $this->public_key_input()."\n".'<img class="captchapict" src="'.$this->get_filename_url().'" '.$is[3].' alt="This is a captcha-picture. It is used to prevent mass-access by robots. (see: http://www.captcha.net)" title="">'."\n";
		}

		/** @private **/
		function public_key_input()
		{
			return '<input type="hidden" name="public_key" value="'.$this->public_key.'">';
		}

		/** @private **/
		function make_captcha()
		{
			$private_key = $this->generate_private();
			if($this->debug) echo "\n<br>-Captcha-Debug: Generate private key: ($private_key)";

			// create Image and set the apropriate function depending on GD-Version & websafecolor-value
			if($this->gd_version >= 2 && !$this->websafecolors)
			{
				$func1 = 'imagecreatetruecolor';
				$func2 = 'imagecolorallocate';
			}
			else
			{
				$func1 = 'imageCreate';
				$func2 = 'imagecolorclosest';
			}
			$image = $func1($this->lx,$this->ly);
			if($this->debug) echo "\n<br>-Captcha-Debug: Generate ImageStream with: ($func1())";
			if($this->debug) echo "\n<br>-Captcha-Debug: For colordefinitions we use: ($func2())";


			// Set Backgroundcolor
			$this->random_color(224, 255);
			$back =  @imagecolorallocate($image, $this->r, $this->g, $this->b);
			@ImageFilledRectangle($image,0,0,$this->lx,$this->ly,$back);
			if($this->debug) echo "\n<br>-Captcha-Debug: We allocate one color for Background: (".$this->r."-".$this->g."-".$this->b.")";

			// allocates the 216 websafe color palette to the image
			if($this->gd_version < 2 || $this->websafecolors) $this->makeWebsafeColors($image);


			// fill with noise or grid
			if($this->nb_noise > 0)
			{
				// random characters in background with random position, angle, color
				if($this->debug) echo "\n<br>-Captcha-Debug: Fill background with noise: (".$this->nb_noise.")";
				for($i=0; $i < $this->nb_noise; $i++)
				{
					srand((double)microtime()*1000000);
					$size	= intval(rand((int)($this->minsize / 2.3), (int)($this->maxsize / 1.7)));
					srand((double)microtime()*1000000);
					$angle	= intval(rand(0, 360));
					srand((double)microtime()*1000000);
					$x		= intval(rand(0, $this->lx));
					srand((double)microtime()*1000000);
					$y		= intval(rand(0, (int)($this->ly - ($size / 5))));
					$this->random_color(160, 224);
					$color	= $func2($image, $this->r, $this->g, $this->b);
					srand((double)microtime()*1000000);
					$text	= chr(intval(rand(45,250)));
					@ImageTTFText($image, $size, $angle, $x, $y, $color, $this->change_TTF(), $text);
				}
			}
			else
			{
				// generate grid
				if($this->debug) echo "\n<br>-Captcha-Debug: Fill background with x-gridlines: (".(int)($this->lx / (int)($this->minsize / 1.5)).")";
				for($i=0; $i < $this->lx; $i += (int)($this->minsize / 1.5))
				{
					$this->random_color(160, 224);
					$color	= $func2($image, $this->r, $this->g, $this->b);
					@imageline($image, $i, 0, $i, $this->ly, $color);
				}
				if($this->debug) echo "\n<br>-Captcha-Debug: Fill background with y-gridlines: (".(int)($this->ly / (int)(($this->minsize / 1.)).")";
				for($i=0 ; $i < $this->ly; $i += (int)($this->minsize / 1.)
				{
					$this->random_color(160, 224);
					$color	= $func2($image, $this->r, $this->g, $this->b);
					@imageline($image, 0, $i, $this->lx, $i, $color);
				}
			}

			// generate Text
			if($this->debug) echo "\n<br>-Captcha-Debug: Fill forground with chars and shadows: (".$this->chars.")";
			for($i=0, $x = intval(rand($this->minsize,$this->maxsize)); $i < $this->chars; $i++)
			{
				//$text	= strtoupper(substr($private_key, $i, 1));
				$text	= substr($private_key, $i, 1);
				srand((double)microtime()*1000000);
				$angle	= intval(rand(($this->maxrotation * -1), $this->maxrotation));
				srand((double)microtime()*1000000);
				$size	= intval(rand($this->minsize, $this->maxsize));
				srand((double)microtime()*1000000);
				$y		= intval(rand((int)($size * 1.5), (int)($this->ly - ($size / 7))));
				$this->random_color(0, 127);
				$color	=  $func2($image, $this->r, $this->g, $this->b);
				$this->random_color(0, 127);
				$shadow = $func2($image, $this->r + 127, $this->g + 127, $this->b + 127);
				@ImageTTFText($image, $size, $angle, $x + (int)($size / 15), $y, $shadow, $this->change_TTF(), $text);
				@ImageTTFText($image, $size, $angle, $x, $y - (int)($size / 15), $color, $this->TTF_file, $text);
				$x += (int)($size + ($this->minsize / 5));
			}
			@ImageJPEG($image, $this->get_filename(), $this->jpegquality);
			$res = file_exists($this->get_filename());
			if($this->debug) echo "\n<br>-Captcha-Debug: Safe Image with quality [".$this->jpegquality."] as (".$this->get_filename().") returns: (".($res ? 'TRUE' : 'FALSE').")";
			@ImageDestroy($image);
			if($this->debug) echo "\n<br>-Captcha-Debug: Destroy Imagestream.";
			if(!$res) die('Unable to safe captcha-image.');
		}

		/** @private **/
		function makeWebsafeColors(&$image)
		{
			//$a = array();
			for($r = 0; $r <= 255; $r += 51)
			{
				for($g = 0; $g <= 255; $g += 51)
				{
					for($b = 0; $b <= 255; $b += 51)
					{
						$color = imagecolorallocate($image, $r, $g, $b);
						//$a[$color] = array('r'=>$r,'g'=>$g,'b'=>$b);
					}
				}
			}
			if($this->debug) echo "\n<br>-Captcha-Debug: Allocate 216 websafe colors to image: (".imagecolorstotal($image).")";
			//return $a;
		}

		/** @private **/
		function random_color($min,$max)
		{
			srand((double)microtime() * 1000000);
			$this->r = intval(rand($min,$max));
			srand((double)microtime() * 1000000);
			$this->g = intval(rand($min,$max));
			srand((double)microtime() * 1000000);
			$this->b = intval(rand($min,$max));
			//echo " (".$this->r."-".$this->g."-".$this->b.") ";
		}

		/** @private **/
		function change_TTF()
		{
			if(is_array($this->TTF_RANGE))
			{
				srand((float)microtime() * 10000000);
				$key = array_rand($this->TTF_RANGE);
				$this->TTF_file = $this->TTF_folder.$this->TTF_RANGE[$key];
			}
			else
			{
				$this->TTF_file = $this->TTF_folder.$this->TTF_RANGE;
			}
			return $this->TTF_file;
		}

		/** @private **/
		function check_captcha($public,$private)
		{
			// when check, destroy picture on disk
			if(file_exists($this->get_filename($public)))
			{
				$res = @unlink($this->get_filename($public)) ? 'TRUE' : 'FALSE';
				if($this->debug) echo "\n<br>-Captcha-Debug: Delete image (".$this->get_filename($public).") returns: ($res)";
			}
			//$res = (strtolower($private)==strtolower($this->generate_private($public))) ? 'TRUE' : 'FALSE';
			$res = (trim($private)==trim($this->generate_private($public))) ? 'TRUE' : 'FALSE';
			if($this->debug) echo "\n<br>-Captcha-Debug: Comparing public with private key returns: ($res)";
			return $res == 'TRUE' ? TRUE : FALSE;
		}

		/** @private **/
		function get_filename($public="")
		{
			if($public=="") $public=$this->public_key;
			return $this->tempfolder.$public.".jpg";
		}

		/** @private **/
		function get_filename_url($public="")
		{
			if($public=="") $public = $this->public_key;
			return str_replace($_SERVER['DOCUMENT_ROOT'],'',$this->tempfolder).$public.".jpg";
		}

		/** @private **/
		function get_try($in=TRUE)
		{
			$s = array();
			for($i = 1; $i <= $this->maxtry; $i++) $s[$i] = $i;

			if($in)
			{
				return (int)substr(strip_tags($_POST['hncaptcha']),($this->secretposition -1),1);
			}
			else
			{
				$a = "";
				$b = "";
				for($i = 1; $i < $this->secretposition; $i++)
				{
					srand((double)microtime()*1000000);
					$a .= $s[intval(rand(1,$this->maxtry))];
				}
				for($i = 0; $i < (32 - $this->secretposition); $i++)
				{
					srand((double)microtime()*1000000);
					$b .= $s[intval(rand(1,$this->maxtry))];
				}
				return $a.$this->current_try.$b;
			}
		}

		/** @private **/
		function get_gd_version()
		{
			static $gd_version_number = null;
			if($gd_version_number === null)
			{
			   ob_start();
			   phpinfo(8);
			   $module_info = ob_get_contents();
			   ob_end_clean();
			   if(preg_match("/\bgd\s+version\b[^\d\n\r]+?([\d\.]+)/i", $module_info, $matches))
			   {
				   $gd_version_number = $matches[1];
			   }
			   else
			   {
				   $gd_version_number = 0;
			   }
			}
			return $gd_version_number;
		}

		/** @private **/
		function generate_private($public="")
		{
			if($public=="") $public = $this->public_key;
			$key = substr(md5($this->key.$public), 16 - $this->chars / 2, $this->chars);
			return $key;
		}

		/**
		  *
		  * @shortdesc returns a message if the form validation has failed
		  * @private
		  * @type string
		  * @return string message or blankline as placeholder
		  *
		  **/
		function notvalid_msg()
		{
			// blank line for all languages
			if($this->current_try == 1) return '&nbsp;<br>&nbsp;';

			// invalid try's: en
			if($this->lang == "en" && $this->current_try > 2 && $this->refreshlink) return 'No valid entry. Please try again:<br>Tipp: If you cannot identify the chars, you can generate a new image!';
			if($this->lang == "en" && $this->current_try >= 2) return 'No valid entry. Please try again:<br>&nbsp;';

			// invalid try's: de
			if($this->lang == "de" && $this->current_try > 2 && $this->refreshlink) return 'Die Eingabe war nicht korrekt.<br>Tipp: Wenn Du die Zeichen nicht erkennen kannst, generiere neue mit dem Link unten!';
			if($this->lang == "de" && $this->current_try >= 2) return 'Die Eingabe war nicht korrekt. Bitte noch einmal versuchen:<br>&nbsp;';

		}


} // END CLASS hn_CAPTCHA

?>

The path where my files go is public_html I have a suspicion that this goes somewhere? I'm learning and the guys who claimed to have written this for me gave me no instructions!

Thanks ever so much for your help.


feyd | Please use

Code: Select all

and

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tags where appropriate when posting code. Read:  [url=http://forums.devnetwork.net/viewtopic.php?t=21171]Posting Code in the Forums[/url][/color]
User avatar
shiznatix
DevNet Master
Posts: 2745
Joined: Tue Dec 28, 2004 5:57 pm
Location: Tallinn, Estonia
Contact:

Post by shiznatix »

holy snap! ppppplease use

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tags when posting code in this forum. there is absolutly nobody that is going to read that and help you out without the tags. thanks
KevUK2K
Forum Newbie
Posts: 4
Joined: Sat Oct 01, 2005 7:52 am
Location: UK

Post by KevUK2K »

A sense of humour!

Sorry, I have very little idea of what I should have done. I am just someone who appears to have been tucked up by people who claimed to be freelancers. I am learning PHP now but am way down the foodchain on that score so perhaps suicide might be the best thing!

Once again please accept my apologies.

Kevin
User avatar
feyd
Neighborhood Spidermoddy
Posts: 31559
Joined: Mon Mar 29, 2004 3:24 pm
Location: Bothell, Washington, USA

Post by feyd »

it's likely either TTF_folder and/or TTF_RANGE are not set properly. For example, if the case differs from the file to the stored filename or the files aren't in the working directory of the script...
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