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<?php
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/*
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+---------------------------------------------------------------------------
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| Invision Power Dynamic v1.0.0
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| ========================================
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| by Matthew Mecham
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| (c) 2004 Invision Power Services
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| http://www.invisionpower.com
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| ========================================
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+---------------------------------------------------------------------------
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| INVISION POWER DYNAMIC IS NOT FREE SOFTWARE!
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| http://www.invisionpower.com/dynamic/
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+---------------------------------------------------------------------------
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| > $Id$
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| > $Revision: 128 $
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| > $Date: 2006-01-20 12:46:26 +0000 (Fri, 20 Jan 2006) $
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+---------------------------------------------------------------------------
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|
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| > CAPTCHA ANTI-SPAM CLASS
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| > Script written by Matt Mecham
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| > Date started: Thursday 2 February (11:08)
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|
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+---------------------------------------------------------------------------
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*/
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/**
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* CAPTCHA CLASS
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* PLUG IN: Default GD image
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* @package IPDYNAMIC
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* @author Matt Mecham
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* @copyright Invision Power Services, Inc.
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* @version 1.0
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*/
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class captchaPlugin
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{
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/**
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* Global IPS class array
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* @var object
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*/
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var $ipsclass;
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/**
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* GD version
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* @var integer
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*/
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var $gd_version = 0;
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/**
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* Backgrounds path
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* @var string
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*/
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var $path_background = '';
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/**
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* Fonts path
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* @var string
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*/
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var $path_fonts = '';
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/**
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* Return an error if GD is not installed?
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* My most verbose string name. I'm so proud.
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* @var boolean
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*/
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var $show_error_gd_img = FALSE;
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/**
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* Error string
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* @var string
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*/
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var $error_string = '';
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/**
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* Constructor bah to PHP 4
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*
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* @param object IPSClass object
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* @param string Captcha plug-in to use
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*/
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function captchaPlugin( $ipsclass )
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{
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$this->ipsclass =& $ipsclass;
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$this->gd_version = $this->ipsclass->vars['gd_version'];
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$this->path_background = ROOT_PATH . 'style_captcha/captcha_backgrounds';
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$this->path_fonts = ROOT_PATH . 'style_captcha/captcha_fonts';
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}
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/*-------------------------------------------------------------------------*/
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// Initializes captcha session
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/*-------------------------------------------------------------------------*/
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/**
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* Initializes captcha session
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* Clears out "dead" entries, adds new row and returns
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* unique ID for use in an image
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*
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* @return string Captcha unique ID
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*/
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function getTemplate()
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{
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//-----------------------------------------
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// Clear old
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//-----------------------------------------
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$this->_clearSessions( $this->ipsclass->ip_address );
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//-----------------------------------------
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// Create new ID
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//-----------------------------------------
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$captcha_unique_id = md5( uniqid( time() ) );
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$captcha_string = "";
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//-----------------------------------------
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// Create new string
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//-----------------------------------------
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/* Seed the random number generator */
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$unique_id = uniqid( mt_rand(), TRUE );
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$unique_id .= md5( $this->ipsclass->vars['sql_pass'] );
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usleep( mt_rand( 15000,1000000 ) );
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mt_srand( (double) microtime() * 1000000 );
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/* Array of characters */
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$array_of_chars = array(
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'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'j', 'k', 'm', 'n', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
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'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'M', 'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
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'1', '2', '3', '4', '5', '6', '7', '8', '9', '0'
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);
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/* Get 6 random characters */
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for( $i = 0; $i < 6; $i++ )
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{
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$idx = rand( 0, count( $array_of_chars ) );
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$captcha_string .= $array_of_chars[ $idx ];
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}
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//-----------------------------------------
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// Add to the DB
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//-----------------------------------------
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$this->ipsclass->DB->do_insert( 'reg_antispam', array( 'regid' => $captcha_unique_id,
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'regcode' => $captcha_string,
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'ip_address' => $this->ipsclass->ip_address,
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'ctime' => time() ) );
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//-----------------------------------------
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// Return Template Bit
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//-----------------------------------------
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return $this->ipsclass->compiled_templates['skin_global']->captchaGD( $captcha_unique_id );
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}
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/*-------------------------------------------------------------------------*/
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// Captcha validate
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/*-------------------------------------------------------------------------*/
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/**
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* Show the captcha bot image
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*
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* @return void
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* @since 1.0
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*/
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function validate()
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{
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//-----------------------------------------
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// INIT
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//-----------------------------------------
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$captcha_unique_id = $this->ipsclass->txt_alphanumerical_clean( $_REQUEST['regid'] );
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$captcha_input_NOT_CLEAN = trim( strtolower( $_REQUEST['reg_code'] ) );
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//-----------------------------------------
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// Get the info from the DB
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//-----------------------------------------
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$captcha = $this->ipsclass->DB->build_and_exec_query( array( 'select' => '*',
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'from' => 'reg_antispam',
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'where' => "regid='". addslashes( $captcha_unique_id )."'" ) );
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if ( ! $captcha['regid'] )
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{
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return FALSE;
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}
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//-----------------------------------------
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// Check...
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//-----------------------------------------
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if ( $captcha['regcode'] != $captcha_input_NOT_CLEAN )
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{
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return FALSE;
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}
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else
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{
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$this->_clearSessions( $this->ipsclass->ip_address );
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return TRUE;
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}
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}
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/*-------------------------------------------------------------------------*/
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// Captcha show image
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/*-------------------------------------------------------------------------*/
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/**
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* Show the captcha bot image
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*
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* @param string captcha_unique_id
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* @return void
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* @since 1.0
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*/
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function captcha_show_image( $captcha_unique_id )
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{
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//-----------------------------------------
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// CHECK
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//-----------------------------------------
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if ( ! $captcha_unique_id )
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{
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return FALSE;
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}
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//-----------------------------------------
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// Get the info from the DB
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//-----------------------------------------
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$captcha = $this->ipsclass->DB->build_and_exec_query( array( 'select' => '*',
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'from' => 'reg_antispam',
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'where' => "regid='".addslashes( $captcha_unique_id )."'" ) );
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if ( ! $captcha['regid'] )
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{
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return FALSE;
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}
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//-----------------------------------------
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// Show it...
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//-----------------------------------------
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$this->_captcha_show_gd_img( $captcha['regcode'] );
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}
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/*-------------------------------------------------------------------------*/
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// Show GD created security image...
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/*-------------------------------------------------------------------------*/
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/**
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* Show anti-spam bot GD image numbers
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*
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* @param string Number string
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* @return void
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* @since 1.0
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*/
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function _captcha_show_gd_img( $content="" )
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{
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//-----------------------------------------
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// Is GD Available?
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//-----------------------------------------
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if ( ! extension_loaded('gd') )
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{
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if ( $this->show_error_gd_img )
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{
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@header( "Content-Type: image/gif" );
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print base64_decode( "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" );
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exit();
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}
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else
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{
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exit();
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}
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}
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//-----------------------------------------
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// INIT
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//-----------------------------------------
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$content = ' '. preg_replace( "/(\w)/", "\\1 ", $content ) .' ';
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$allow_fonts = isset( $this->ipsclass->vars['captcha_allow_fonts'] ) ? $this->ipsclass->vars['captcha_allow_fonts'] : 1;
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$use_fonts = 0;
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$tmp_x = 135;
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$tmp_y = 20;
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$image_x = 200;
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$image_y = 60;
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$circles = 3;
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$continue_loop = TRUE;
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$_started = FALSE;
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//-----------------------------------------
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// Get backgrounds and fonts...
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//-----------------------------------------
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$backgrounds = $this->_captcha_show_gd_img_get_backgrounds();
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$fonts = $this->_captcha_show_gd_img_get_fonts();
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//-----------------------------------------
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// Seed rand functions for PHP versions that don't
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//-----------------------------------------
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mt_srand( (double) microtime() * 1000000 );
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//-----------------------------------------
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// Got a background?
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//-----------------------------------------
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$_imgs = array();
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if ( $this->ipsclass->vars['gd_version'] > 1 )
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{
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while ( $continue_loop )
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{
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if ( is_array( $backgrounds ) AND count( $backgrounds ) )
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{
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$i = mt_rand(0, count( $backgrounds ) - 1 );
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$background = $backgrounds[ $i ];
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$_file_extension = preg_replace( "#^.*\.(\w{2,4})$#is", "\\1", strtolower( $background ) );
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switch( $_file_extension )
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{
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case 'jpg':
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case 'jpe':
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case 'jpeg':
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if ( ! function_exists('imagecreatefromjpeg') OR ! $im = @imagecreatefromjpeg($background) )
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{
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unset( $backgrounds[ $i ] );
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}
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else
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{
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$_imgs[] = $im;
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if( count( $_imgs ) > 2 )
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{
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$continue_loop = FALSE;
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$_started = TRUE;
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}
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}
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break;
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case 'gif':
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if ( ! function_exists('imagecreatefromgif') OR ! $im = @imagecreatefromgif($background) )
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{
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unset( $backgrounds[ $i ] );
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}
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else
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{
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$_imgs[] = $im;
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if( count( $_imgs ) > 2 )
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{
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$continue_loop = FALSE;
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$_started = TRUE;
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}
|
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}
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break;
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case 'png':
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if ( ! function_exists('imagecreatefrompng') OR ! $im = @imagecreatefrompng($background) )
|
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{
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unset( $backgrounds[ $i ] );
|
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}
|
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else
|
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{
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$_imgs[] = $im;
|
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if( count( $_imgs ) > 2 )
|
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{
|
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$continue_loop = FALSE;
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$_started = TRUE;
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}
|
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}
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break;
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||||
}
|
||||
}
|
||||
else
|
||||
{
|
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$continue_loop = FALSE;
|
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}
|
||||
}
|
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}
|
||||
|
||||
/* Create a new background */
|
||||
if( count( $_imgs > 2 ) )
|
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{
|
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/* Setup */
|
||||
$strip_count = 8;
|
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$strips = ceil( $image_x / $strip_count );
|
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$im = imagecreatetruecolor( $image_x, $image_y );
|
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$curr_offset = 0;
|
||||
|
||||
for( $i = 0; $i < $strip_count; $i++ )
|
||||
{
|
||||
/* Alternate the background */
|
||||
$alternate++;
|
||||
$alternate = ( $alternate > 2 ) ? 0 : $alternate;
|
||||
|
||||
/* Width of the strip */
|
||||
$end_strip = ( $i * $strips ) + rand( 1, $strips );
|
||||
|
||||
/* Copy the splice */
|
||||
imagecopymerge( $im, $_imgs[$alternate], $curr_offset, 0, $curr_offset, 0, $end_strip, $image_y, rand( 1, 100 ) );
|
||||
|
||||
/* Increment the offset */
|
||||
$curr_offset += $end_strip;
|
||||
}
|
||||
|
||||
$_started = TRUE;
|
||||
|
||||
}
|
||||
|
||||
//-----------------------------------------
|
||||
// Still not got one? DO OLD FASHIONED
|
||||
//-----------------------------------------
|
||||
|
||||
if ( $_started !== TRUE )
|
||||
{
|
||||
if ( $this->ipsclass->vars['gd_version'] == 1 )
|
||||
{
|
||||
$im = imagecreate($image_x, $image_y);
|
||||
$tmp = imagecreate($tmp_x, $tmp_y);
|
||||
}
|
||||
else
|
||||
{
|
||||
$im = imagecreatetruecolor($image_x, $image_y);
|
||||
$tmp = imagecreatetruecolor($tmp_x, $tmp_y);
|
||||
}
|
||||
|
||||
$white = ImageColorAllocate($tmp, 255, 255, 255);
|
||||
$black = ImageColorAllocate($tmp, 0, 0, 0);
|
||||
$grey = ImageColorAllocate($tmp, 200, 200, 200 );
|
||||
|
||||
imagefill($tmp, 0, 0, $white);
|
||||
|
||||
for ( $i = 1; $i <= $circles; $i++ )
|
||||
{
|
||||
$values = array(
|
||||
0 => rand(0, $tmp_x - 10),
|
||||
1 => rand(0, $tmp_y - 3),
|
||||
2 => rand(0, $tmp_x - 10),
|
||||
3 => rand(0, $tmp_y - 3),
|
||||
4 => rand(0, $tmp_x - 10),
|
||||
5 => rand(0, $tmp_y - 3),
|
||||
6 => rand(0, $tmp_x - 10),
|
||||
7 => rand(0, $tmp_y - 3),
|
||||
8 => rand(0, $tmp_x - 10),
|
||||
9 => rand(0, $tmp_y - 3),
|
||||
10 => rand(0, $tmp_x - 10),
|
||||
11 => rand(0, $tmp_y - 3),
|
||||
);
|
||||
|
||||
$randomcolor = imagecolorallocate( $tmp, rand(100,255), rand(100,255),rand(100,255) );
|
||||
imagefilledpolygon($tmp, $values, 6, $randomcolor );
|
||||
}
|
||||
|
||||
$num = strlen($content);
|
||||
$x_param = 0;
|
||||
$y_param = 0;
|
||||
|
||||
for( $i = 0; $i < $num; $i++ )
|
||||
{
|
||||
$x_param += rand(-1,12);
|
||||
$y_param = rand(-3,8);
|
||||
|
||||
if( $x_param + 18 > $image_x )
|
||||
{
|
||||
$x_param -= ceil( $x_param + 18 - $image_x );
|
||||
}
|
||||
|
||||
$randomcolor = imagecolorallocate( $tmp, rand(0,150), rand(0,150),rand(0,150) );
|
||||
|
||||
imagestring($tmp, 5, $x_param+1, $y_param+1, $content{$i}, $grey);
|
||||
imagestring($tmp, 5, $x_param, $y_param, $content{$i}, $randomcolor);
|
||||
}
|
||||
|
||||
//-----------------------------------------
|
||||
// Distort by resizing
|
||||
//-----------------------------------------
|
||||
|
||||
imagecopyresized($im, $tmp, 0, 0, 0, 0, $image_x, $image_y, $tmp_x, $tmp_y);
|
||||
|
||||
imagedestroy($tmp);
|
||||
|
||||
//-----------------------------------------
|
||||
// Background dots and lines
|
||||
//-----------------------------------------
|
||||
|
||||
$random_pixels = $image_x * $image_y / 10;
|
||||
|
||||
for ($i = 0; $i < $random_pixels; $i++)
|
||||
{
|
||||
$randomcolor = imagecolorallocate( $im, rand(0,150), rand(0,150),rand(0,150) );
|
||||
ImageSetPixel($im, rand(0, $image_x), rand(0, $image_y), $randomcolor);
|
||||
}
|
||||
|
||||
$no_x_lines = ($image_x - 1) / 5;
|
||||
|
||||
for ( $i = 0; $i <= $no_x_lines; $i++ )
|
||||
{
|
||||
ImageLine( $im, $i * $no_x_lines, 0, $i * $no_x_lines, $image_y, $grey );
|
||||
ImageLine( $im, $i * $no_x_lines, 0, ($i * $no_x_lines)+$no_x_lines, $image_y, $grey );
|
||||
}
|
||||
|
||||
$no_y_lines = ($image_y - 1) / 5;
|
||||
|
||||
for ( $i = 0; $i <= $no_y_lines; $i++ )
|
||||
{
|
||||
ImageLine( $im, 0, $i * $no_y_lines, $image_x, $i * $no_y_lines, $grey );
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
//-----------------------------------------
|
||||
// Can we use fonts?
|
||||
//-----------------------------------------
|
||||
|
||||
if ( $allow_fonts AND function_exists('imagettftext') AND is_array( $fonts ) AND count( $fonts ) )
|
||||
{
|
||||
if ( function_exists('imageantialias') )
|
||||
{
|
||||
imageantialias( $im, TRUE );
|
||||
}
|
||||
|
||||
$num = strlen($content);
|
||||
$x_param = -10;
|
||||
$y_param = 0;
|
||||
|
||||
for( $i = 0; $i < $num; $i++ )
|
||||
{
|
||||
/* Random Font */
|
||||
$_font = $fonts[ mt_rand( 0, count( $fonts ) - 1 ) ];
|
||||
|
||||
$y_param = rand( 35, 48 );
|
||||
|
||||
# Main color
|
||||
$col_r = rand(50,200);
|
||||
$col_g = rand(0,150);
|
||||
$col_b = rand(50,200);
|
||||
# High light
|
||||
$col_r_l = ( $col_r + 50 > 255 ) ? 255 : $col_r + 50;
|
||||
$col_g_l = ( $col_g + 50 > 255 ) ? 255 : $col_g + 50;
|
||||
$col_b_l = ( $col_b + 50 > 255 ) ? 255 : $col_b + 50;
|
||||
# Low light
|
||||
$col_r_d = ( $col_r - 50 < 0 ) ? 0 : $col_r - 50;
|
||||
$col_g_d = ( $col_g - 50 < 0 ) ? 0 : $col_g - 50;
|
||||
$col_b_d = ( $col_b - 50 < 0 ) ? 0 : $col_b - 50;
|
||||
|
||||
$color_main = imagecolorallocate( $im, $col_r, $col_g, $col_b );
|
||||
$color_light = imagecolorallocate( $im, $col_r_l, $col_g_l, $col_b_l );
|
||||
$color_dark = imagecolorallocate( $im, $col_r_d, $col_g_d, $col_b_d );
|
||||
$_slant = mt_rand( -20, 40 );
|
||||
|
||||
if ( $i == 1 OR $i == 3 OR $i == 5 )
|
||||
{
|
||||
for( $ii = 0 ; $ii < 2 ; $ii++ )
|
||||
{
|
||||
$a = $x_param + 50;
|
||||
$b = mt_rand(0,100);
|
||||
$c = $a + 20;
|
||||
$d = $b + 20;
|
||||
$e = ( $i == 3 ) ? mt_rand( 280, 320 ) : mt_rand( -280, -320 );
|
||||
|
||||
imagearc( $im, $a , $b , $c, $d, 0, $e, $color_light );
|
||||
imagearc( $im, $a+1, $b+1, $c, $d, 0, $e, $color_main );
|
||||
}
|
||||
}
|
||||
|
||||
$text_size = rand( 24, 30 ); //24
|
||||
|
||||
if ( ! $_result = @imagettftext( $im, $text_size, $_slant, $x_param - 1, $y_param - 1, $color_light, $_font, $content[$i] ) )
|
||||
{
|
||||
$use_fonts = FALSE;
|
||||
break;
|
||||
}
|
||||
else
|
||||
{
|
||||
@imagettftext( $im, $text_size, $_slant, $x_param + 1, $y_param + 1, $color_dark, $_font, $content[$i] );
|
||||
@imagettftext( $im, $text_size, $_slant, $x_param, $y_param, $color_main, $_font, $content[$i] );
|
||||
}
|
||||
|
||||
$x_param += rand( 13, 16 ); //15,18
|
||||
|
||||
if( $x_param + 18 > $image_x )
|
||||
{
|
||||
$x_param -= ceil( $x_param + 18 - $image_x );
|
||||
}
|
||||
}
|
||||
|
||||
$use_fonts = TRUE;
|
||||
}
|
||||
|
||||
if ( ! $use_fonts )
|
||||
{
|
||||
//-----------------------------------------
|
||||
// Continue with nice background image
|
||||
//-----------------------------------------
|
||||
|
||||
$tmp = imagecreatetruecolor($tmp_x , $tmp_y );
|
||||
$tmp2 = imagecreatetruecolor($image_x, $image_y);
|
||||
|
||||
$white = imagecolorallocate( $tmp, 255, 255, 255 );
|
||||
$black = imagecolorallocate( $tmp, 0, 0, 0 );
|
||||
$grey = imagecolorallocate( $tmp, 100, 100, 100 );
|
||||
$transparent = imagecolorallocate( $tmp2, 255, 255, 255 );
|
||||
$_white = imagecolorallocate( $tmp2, 255, 255, 255 );
|
||||
|
||||
imagefill($tmp , 0, 0, $white );
|
||||
imagefill($tmp2, 0, 0, $_white);
|
||||
|
||||
$num = strlen($content);
|
||||
$x_param = 0;
|
||||
$y_param = 0;
|
||||
|
||||
for( $i = 0; $i < $num; $i++ )
|
||||
{
|
||||
if ( $i > 0 )
|
||||
{
|
||||
$x_param += rand( 6, 12 );
|
||||
|
||||
if( $x_param + 18 > $image_x )
|
||||
{
|
||||
$x_param -= ceil( $x_param + 18 - $image_x );
|
||||
}
|
||||
}
|
||||
|
||||
$y_param = rand( 0, 5 );
|
||||
|
||||
$randomcolor = imagecolorallocate( $tmp, rand(50,200), rand(50,200),rand(50,200) );
|
||||
|
||||
imagestring( $tmp, 5, $x_param + 1, $y_param + 1, $content{$i}, $grey );
|
||||
imagestring( $tmp, 5, $x_param , $y_param , $content{$i}, $randomcolor );
|
||||
}
|
||||
|
||||
imagecopyresized($tmp2, $tmp, 0, 0, 0, 0, $image_x, $image_y, $tmp_x, $tmp_y );
|
||||
|
||||
$tmp2 = $this->_captcha_show_gd_img_wave( $tmp2, 8, true );
|
||||
|
||||
imagecolortransparent( $tmp2, $transparent );
|
||||
imagecopymerge( $im, $tmp2, 0, 0, 0, 0, $image_x, $image_y, 100 );
|
||||
|
||||
imagedestroy($tmp);
|
||||
imagedestroy($tmp2);
|
||||
}
|
||||
}
|
||||
|
||||
//-----------------------------------------
|
||||
// Blur?
|
||||
//-----------------------------------------
|
||||
|
||||
if ( function_exists( 'imagefilter' ) )
|
||||
{
|
||||
@imagefilter( $im, IMG_FILTER_GAUSSIAN_BLUR );
|
||||
}
|
||||
|
||||
//-----------------------------------------
|
||||
// Render a border
|
||||
//-----------------------------------------
|
||||
|
||||
$black = imagecolorallocate( $im, 0, 0, 0 );
|
||||
|
||||
imageline( $im, 0, 0, $image_x, 0, $black );
|
||||
imageline( $im, 0, 0, 0, $image_y, $black );
|
||||
imageline( $im, $image_x - 1, 0, $image_x - 1, $image_y, $black );
|
||||
imageline( $im, 0, $image_y - 1, $image_x, $image_y - 1, $black );
|
||||
|
||||
//-----------------------------------------
|
||||
// Show it!
|
||||
//-----------------------------------------
|
||||
|
||||
@header( "Content-Type: image/jpeg" );
|
||||
|
||||
imagejpeg( $im );
|
||||
imagedestroy( $im );
|
||||
|
||||
exit();
|
||||
}
|
||||
|
||||
/*-------------------------------------------------------------------------*/
|
||||
// Create wave effect for GD images...
|
||||
/*-------------------------------------------------------------------------*/
|
||||
|
||||
/**
|
||||
* Create wave effect for GD images
|
||||
*
|
||||
* @param object Image resource
|
||||
* @return object Returned image resource
|
||||
* @since 1.0
|
||||
*/
|
||||
function _captcha_show_gd_img_wave( $im, $wave=10 )
|
||||
{
|
||||
$_width = imagesx( $im );
|
||||
$_height = imagesy( $im );
|
||||
|
||||
$tmp = imagecreatetruecolor( $_width, $_height );
|
||||
|
||||
$_direction = ( time() % 2 ) ? TRUE : FALSE;
|
||||
|
||||
for ( $x = 0; $x < $_width; $x++ )
|
||||
{
|
||||
for ( $y = 0 ; $y < $_height ; $y++ )
|
||||
{
|
||||
$xo = $wave * sin( 2 * 3.1415 * $y / 128 );
|
||||
$yo = $wave * cos( 2 * 3.1415 * $x / 128 );
|
||||
|
||||
$_x = $x - $xo;
|
||||
$_y = $y - $yo;
|
||||
|
||||
if ( ($_x > 0 AND $_x < $_width) AND ($_y > 0 AND $_y < $_height) )
|
||||
{
|
||||
$index = imagecolorat($im, $_x, $_y);
|
||||
$colors = imagecolorsforindex($im, $index);
|
||||
$color = imagecolorresolve( $tmp, $colors['red'], $colors['green'], $colors['blue'] );
|
||||
}
|
||||
else
|
||||
{
|
||||
$color = imagecolorresolve( $tmp, 255, 255, 255 );
|
||||
}
|
||||
|
||||
imagesetpixel( $tmp, $x, $y, $color );
|
||||
}
|
||||
}
|
||||
|
||||
return $tmp;
|
||||
}
|
||||
|
||||
/*-------------------------------------------------------------------------*/
|
||||
// Removes extinct captcha sessions
|
||||
/*-------------------------------------------------------------------------*/
|
||||
/**
|
||||
* Removes extinct captcha sessions
|
||||
* Clears out "dead" entries
|
||||
*
|
||||
* @param string Optional IP address to clear out on
|
||||
* @return string void
|
||||
*/
|
||||
|
||||
function _clearSessions( $ip_address='' )
|
||||
{
|
||||
//-----------------------------------------
|
||||
// INIT
|
||||
//-----------------------------------------
|
||||
|
||||
$time = time() - 60 * 3600;
|
||||
$extra = ( $ip_address ) ? ' OR ip_address="'.$ip_address.'"' : '';
|
||||
|
||||
//-----------------------------------------
|
||||
// Remove...
|
||||
//-----------------------------------------
|
||||
|
||||
$this->ipsclass->DB->build_and_exec_query( array( 'delete' => 'reg_antispam',
|
||||
'where' => 'ctime < ' . $time . $extra ) );
|
||||
|
||||
}
|
||||
|
||||
/*-------------------------------------------------------------------------*/
|
||||
// Load up the backgrounds
|
||||
/*-------------------------------------------------------------------------*/
|
||||
/**
|
||||
* Loads up the backgrounds.
|
||||
*
|
||||
* @return array backgrounds
|
||||
*/
|
||||
|
||||
function _captcha_show_gd_img_get_backgrounds()
|
||||
{
|
||||
//-----------------------------------------
|
||||
// INIT
|
||||
//-----------------------------------------
|
||||
|
||||
$images = array();
|
||||
$_path = $this->path_background;
|
||||
|
||||
if ( $_dir = @opendir( $_path ) )
|
||||
{
|
||||
while( false !== ( $_file = @readdir( $_dir ) ) )
|
||||
{
|
||||
if ( preg_match( "#\.(gif|jpeg|jpg|png)$#i", $_file ) )
|
||||
{
|
||||
$images[] = $_path . '/' . $_file;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return $images;
|
||||
}
|
||||
|
||||
/*-------------------------------------------------------------------------*/
|
||||
// Load up the fonts
|
||||
/*-------------------------------------------------------------------------*/
|
||||
/**
|
||||
* Loads up the fonts.
|
||||
*
|
||||
* @return array fonts
|
||||
*/
|
||||
|
||||
function _captcha_show_gd_img_get_fonts()
|
||||
{
|
||||
//-----------------------------------------
|
||||
// INIT
|
||||
//-----------------------------------------
|
||||
|
||||
$fonts = array();
|
||||
$_path = $this->path_fonts;
|
||||
|
||||
if ( $_dir = @opendir( $_path ) )
|
||||
{
|
||||
while( false !== ( $_file = @readdir( $_dir ) ) )
|
||||
{
|
||||
if ( preg_match( "#\.(ttf)$#i", $_file ) )
|
||||
{
|
||||
$fonts[] = $_path . '/' . $_file;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return $fonts;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
?>
|
||||
Reference in new issue
Block a user