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Fixed issue: Captchas not displaying
git-svn-id: file:///Users/Shitiz/Downloads/lssvn/source/limesurvey_ci@11099 b72ed6b6-b9f8-46b5-92b4-906544132732
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,106 @@ | ||
| <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); | ||
| /* | ||
| * LimeSurvey | ||
| * Copyright (C) 2007 The LimeSurvey Project Team / Carsten Schmitz | ||
| * All rights reserved. | ||
| * License: GNU/GPL License v2 or later, see LICENSE.php | ||
| * LimeSurvey is free software. This version may have been modified pursuant | ||
| * to the GNU General Public License, and as distributed it includes or | ||
| * is derivative of works licensed under the GNU General Public License or | ||
| * other free or open source software licenses. | ||
| * See COPYRIGHT.php for copyright notices and details. | ||
| * | ||
| * $Id: survey.php 10433 2011-07-06 14:18:45Z dionet $ | ||
| * | ||
| */ | ||
|
|
||
| class verification extends CI_Controller { | ||
|
|
||
| function __construct() | ||
| { | ||
| parent::__construct(); | ||
| } | ||
|
|
||
| function image() | ||
| { | ||
| $rootdir=$this->config->item('rootdir'); | ||
|
|
||
| // header for png | ||
| Header("Content-Type: image/png"); | ||
|
|
||
| // Create Image | ||
| $im = ImageCreate(75, 20); | ||
| $white = ImageColorAllocate($im, 255, 255, 255); | ||
| $black = ImageColorAllocate($im, 0, 0, 0); | ||
| $red = ImageColorAllocate($im, 255, 0, 0); | ||
| $blue = ImageColorAllocate($im, 0, 0, 255); | ||
| $grey_shade = ImageColorAllocate($im, 204, 204, 204); | ||
|
|
||
| // Create the random numberes | ||
| srand((double)microtime()*1000000); | ||
|
|
||
| $num1 = rand(1,5); | ||
| $found = false; | ||
| while ($found == false) | ||
| { | ||
| $num2 = rand(1,100); | ||
| if (preg_match('/^[0-9]+$/', $num2/5)) | ||
| { | ||
| $found = true; | ||
| break; | ||
| } | ||
| } | ||
| $font_c_rand = rand(1,3); | ||
| if ($font_c_rand == 1) | ||
| { | ||
| $font_color = $black; | ||
| } else if ($font_c_rand == 2) | ||
| { | ||
| $font_color = $red; | ||
| } else if ($font_c_rand == 3) | ||
| { | ||
| $font_color = $blue; | ||
| } | ||
|
|
||
| $font_rand = rand(1,3); | ||
| if ($font_rand == 1) | ||
| { | ||
| $font = $rootdir.DIRECTORY_SEPARATOR."fonts".DIRECTORY_SEPARATOR."verabd.ttf"; | ||
| } else if ($font_rand == 2) { | ||
| $font = $rootdir.DIRECTORY_SEPARATOR."fonts".DIRECTORY_SEPARATOR."vera.ttf"; | ||
| } else if ($font_rand == 3) | ||
| { | ||
| $font = $rootdir.DIRECTORY_SEPARATOR."fonts".DIRECTORY_SEPARATOR."verait.ttf"; | ||
| } | ||
|
|
||
| $line_rand = rand(1,3); | ||
| if ($line_rand == 1) | ||
| { | ||
| $line_color = $black; | ||
| } else if ($line_rand == 2) | ||
| { | ||
| $line_color = $red; | ||
| } else if ($line_rand == 3) | ||
| { | ||
| $line_color = $blue; | ||
| } | ||
|
|
||
| // Fill image, make transparent | ||
| ImageFill($im, 0, 0, $grey_shade); | ||
| //imagecolortransparent ($im, $white); | ||
| imageline($im,0,0,0,20,$line_color); | ||
| imageline($im,74,0,74,19,$line_color); | ||
| imageline($im,0,0,74,0,$line_color); | ||
| imageline($im,0,19,74,19,$line_color); | ||
| // Write math question in a nice TTF Font | ||
| ImageTTFText($im, 10, 0, 3, 16,$font_color, $font, $num1." + ".$num2." =" ); | ||
|
|
||
| // Display Image | ||
| ImagePNG($im); | ||
| ImageDestroy($im); | ||
|
|
||
| // Add the answer to the session | ||
| $_SESSION['secanswer'] = $num1+$num2; | ||
| } | ||
| } | ||
|
|
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,6 @@ | ||
| For package size reasons the Firefly Sung font to show Chinese characters in the statistics graphs | ||
| is not included with LimeSurvey. | ||
|
|
||
| Please download it from http://cle.linux.org.tw/fonts/FireFly/fireflysung-1.3.0.tar.gz | ||
| and put the fireflysung.tff file into the /fonts directory of your LimeSurvey installation. | ||
|
|
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