401
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 1
<?php
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 2
/************************************************************\
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 3
*
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 4
* freeCap v1.4.1 Copyright 2005 Howard Yeend
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 5
* www.puremango.co.uk
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 6
*
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 7
* This file is part of freeCap.
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 8
*
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 9
* freeCap is free software; you can redistribute it and/or modify
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 10
* it under the terms of the GNU General Public License as published by
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 11
* the Free Software Foundation; either version 2 of the License, or
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 12
* (at your option) any later version.
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 13
*
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 14
* freeCap is distributed in the hope that it will be useful,
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 15
* but WITHOUT ANY WARRANTY; without even the implied warranty of
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 16
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 17
* GNU General Public License for more details.
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 18
*
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 19
* You should have received a copy of the GNU General Public License
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 20
* along with freeCap; if not, write to the Free Software
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 21
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 22
*
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 23
*
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 24
\************************************************************/
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 25
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 26
/**
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 27
* A port of the freeCap captcha engine to Enano.
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 28
*/
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 29
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 30
class captcha_engine_freecap extends captcha_base
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 31
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 32
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 33
var $site_tags = array();
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 34
var $tag_pos = 0;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 35
var $rand_func = "mt_rand";
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 36
var $seed_func = "mt_srand";
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 37
var $hash_func = "sha1";
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 38
var $output = "png";
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 39
var $use_dict = false;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 40
var $dict_location = "";
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 41
var $max_word_length = 7;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 42
var $col_type = 1;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 43
var $max_attempts = 20;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 44
var $font_locations = Array();
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 45
var $bg_type = 3;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 46
var $blur_bg = false;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 47
var $bg_images = Array();
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 48
var $merge_type = 0;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 49
var $morph_bg = true;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 50
var $im, $im2, $im3;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 51
var $font_size = 36;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 52
var $debug = false;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 53
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 54
function __construct($s, $r = false)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 55
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 56
parent::__construct($s, $r);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 57
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 58
// try to avoid the 'free p*rn' method of CAPTCHA circumvention
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 59
// see en.wikipedia.org/wiki/CAPTCHA for more info
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 60
// $this->site_tags[0] = "To avoid spam, please do NOT enter the text if";
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 61
// $this->site_tags[1] = "this site is not puremango.co.uk";
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 62
// or more simply:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 63
// $site_tags[0] = "for use only on puremango.co.uk";
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 64
// reword or add lines as you please
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 65
// or if you don't want any text:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 66
$this->site_tags = array();
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 67
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 68
// where to write the above:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 69
// 0=top
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 70
// 1=bottom
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 71
// 2=both
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 72
$this->tag_pos = 1;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 73
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 74
// functions to call for random number generation
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 75
// mt_rand produces 'better' random numbers
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 76
// but if your server doesn't support it, it's fine to use rand instead
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 77
$this->rand_func = "mt_rand";
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 78
$this->seed_func = "mt_srand";
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 79
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 80
// which type of hash to use?
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 81
// possible values: "sha1", "md5", "crc32"
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 82
// sha1 supported by PHP4.3.0+
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 83
// md5 supported by PHP3+
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 84
// crc32 supported by PHP4.0.1+
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 85
$this->hash_func = $this->session_fetch('hash_func', 'sha1');
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 86
// store in session so can validate in form processor
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 87
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 88
// image type:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 89
// possible values: "jpg", "png", "gif"
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 90
// jpg doesn't support transparency (transparent bg option ends up white)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 91
// png isn't supported by old browsers (see http://www.libpng.org/pub/png/pngstatus.html)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 92
// gif may not be supported by your GD Lib.
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 93
$this->output = "png";
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 94
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 95
// 0=generate pseudo-random string, true=use dictionary
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 96
// dictionary is easier to recognise
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 97
// - both for humans and computers, so use random string if you're paranoid.
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 98
$this->use_dict = false;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 99
// if your server is NOT set up to deny web access to files beginning ".ht"
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 100
// then you should ensure the dictionary file is kept outside the web directory
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 101
// eg: if www.foo.com/index.html points to c:\website\www\index.html
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 102
// then the dictionary should be placed in c:\website\dict.txt
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 103
// test your server's config by trying to access the dictionary through a web browser
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 104
// you should NOT be able to view the contents.
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 105
// can leave this blank if not using dictionary
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 106
$this->dict_location = ENANO_ROOT . "/includes/captcha/dicts/default.php";
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 107
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 108
// used to calculate image width, and for non-dictionary word generation
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 109
$this->max_word_length = 7;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 110
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 111
// text colour
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 112
// 0=one random colour for all letters
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 113
// 1=different random colour for each letter
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 114
$this->col_type = 1;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 115
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 116
// maximum times a user can refresh the image
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 117
// on a 6500 word dictionary, I think 15-50 is enough to not annoy users and make BF unfeasble.
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 118
// further notes re: BF attacks in "avoid brute force attacks" section, below
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 119
// on the other hand, those attempting OCR will find the ability to request new images
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 120
// very useful; if they can't crack one, just grab an easier target...
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 121
// for the ultra-paranoid, setting it to <5 will still work for most users
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 122
$this->max_attempts = 20;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 123
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 124
// list of fonts to use
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 125
// font size should be around 35 pixels wide for each character.
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 126
// you can use my GD fontmaker script at www.puremango.co.uk to create your own fonts
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 127
// There are other programs to can create GD fonts, but my script allows a greater
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 128
// degree of control over exactly how wide each character is, and is therefore
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 129
// recommended for 'special' uses. For normal use of GD fonts,
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 130
// the GDFontGenerator @ http://www.philiplb.de is excellent for convering ttf to GD
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 131
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 132
// the fonts included with freeCap *only* include lowercase alphabetic characters
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 133
// so are not suitable for most other uses
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 134
// to increase security, you really should add other fonts
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 135
$this->font_locations = Array(
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 136
//ENANO_ROOT . "/includes/captcha/fonts/assimila.ttf",
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 137
//ENANO_ROOT . "/includes/captcha/fonts/elephant.ttf",
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 138
//ENANO_ROOT . "/includes/captcha/fonts/swash_normal.ttf",
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 139
//ENANO_ROOT . "/includes/captcha/fonts/.ttf",
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 140
//ENANO_ROOT . "/includes/captcha/fonts/trekker_regular.ttf"
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 141
ENANO_ROOT . "/includes/captcha/fonts/FreeMonoBold.ttf",
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 142
ENANO_ROOT . "/includes/captcha/fonts/FreeSerifBold.ttf",
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 143
ENANO_ROOT . "/includes/captcha/fonts/LiberationSans-Bold.ttf",
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 144
);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 145
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 146
// background:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 147
// 0=transparent (if jpg, white)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 148
// 1=white bg with grid
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 149
// 2=white bg with squiggles
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 150
// 3=morphed image blocks
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 151
// 'random' background from v1.3 didn't provide any extra security (according to 2 independent experts)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 152
// many thanks to http://ocr-research.org.ua and http://sam.zoy.org/pwntcha/ for testing
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 153
// for jpgs, 'transparent' is white
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 154
$this->bg_type = 3;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 155
// should we blur the background? (looks nicer, makes text easier to read, takes longer)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 156
$this->blur_bg = false;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 157
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 158
// for bg_type 3, which images should we use?
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 159
// if you add your own, make sure they're fairly 'busy' images (ie a lot of shapes in them)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 160
$this->bg_images = Array(
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 161
ENANO_ROOT . "/includes/captcha/pics/freecap_im1.jpg",
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 162
ENANO_ROOT . "/includes/captcha/pics/freecap_im2.jpg",
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 163
ENANO_ROOT . "/includes/captcha/pics/freecap_im3.jpg",
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 164
ENANO_ROOT . "/includes/captcha/pics/freecap_im4.jpg",
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 165
ENANO_ROOT . "/includes/captcha/pics/allyourbase.jpg"
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 166
);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 167
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 168
// for non-transparent backgrounds only:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 169
// if 0, merges CAPTCHA with bg
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 170
// if 1, write CAPTCHA over bg
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 171
$this->merge_type = 0;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 172
// should we morph the bg? (recommend yes, but takes a little longer to compute)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 173
$this->morph_bg = true;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 174
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 175
// you shouldn't need to edit anything below this, but it's extensively commented if you do want to play
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 176
// have fun, and email me with ideas, or improvements to the code (very interested in speed improvements)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 177
// hope this script saves some spam :-)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 178
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 179
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 180
//////////////////////////////////////////////////////
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 181
////// Functions:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 182
//////////////////////////////////////////////////////
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 183
function make_seed() {
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 184
// from http://php.net/srand
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 185
list($usec, $sec) = explode(' ', microtime());
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 186
return (float) $sec + ((float) $usec * 100000);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 187
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 188
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 189
function rand_color() {
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 190
$rf =& $this->rand_func;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 191
if($this->bg_type==3)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 192
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 193
// needs darker colour..
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 194
return $rf(10,100);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 195
} else {
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 196
return $rf(60,170);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 197
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 198
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 199
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 200
function myImageBlur($im)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 201
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 202
// w00t. my very own blur function
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 203
// in GD2, there's a gaussian blur function. bunch of bloody show-offs... :-)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 204
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 205
$width = imagesx($im);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 206
$height = imagesy($im);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 207
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 208
$temp_im = ImageCreateTrueColor($width,$height);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 209
$bg = ImageColorAllocate($temp_im,150,150,150);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 210
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 211
// preserves transparency if in orig image
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 212
ImageColorTransparent($temp_im,$bg);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 213
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 214
// fill bg
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 215
ImageFill($temp_im,0,0,$bg);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 216
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 217
// anything higher than 3 makes it totally unreadable
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 218
// might be useful in a 'real' blur function, though (ie blurring pictures not text)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 219
$distance = 1;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 220
// use $distance=30 to have multiple copies of the word. not sure if this is useful.
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 221
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 222
// blur by merging with itself at different x/y offsets:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 223
ImageCopyMerge($temp_im, $im, 0, 0, 0, $distance, $width, $height-$distance, 70);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 224
ImageCopyMerge($im, $temp_im, 0, 0, $distance, 0, $width-$distance, $height, 70);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 225
ImageCopyMerge($temp_im, $im, 0, $distance, 0, 0, $width, $height, 70);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 226
ImageCopyMerge($im, $temp_im, $distance, 0, 0, 0, $width, $height, 70);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 227
// remove temp image
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 228
ImageDestroy($temp_im);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 229
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 230
return $im;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 231
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 232
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 233
function sendImage($pic)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 234
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 235
// output image with appropriate headers
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 236
global $output,$im,$im2,$im3;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 237
// ENANO - obfuscation technique disabled
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 238
// (this is for ethical reasons - ask dan at enanocms.org for information on why)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 239
// Basically it outputs an X-Captcha header showing freeCap version, etc. Unnecessary
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 240
// header(base64_decode("WC1DYXB0Y2hhOiBmcmVlQ2FwIDEuNCAtIHd3dy5wdXJlbWFuZ28uY28udWs="));
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 241
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 242
if ( $this->debug )
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 243
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 244
$x = imagesx($pic) - 70;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 245
$y = imagesy($pic) - 20;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 246
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 247
$code = $this->get_code();
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 248
$red = ImageColorAllocateAlpha($pic, 0xAA, 0, 0, 72);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 249
ImageString($pic, 5, $x, $y, $code, $red);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 250
ImageString($pic, 5, 5, $y, "[debug mode]", $red);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 251
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 252
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 253
switch($this->output)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 254
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 255
// add other cases as desired
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 256
case "jpg":
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 257
header("Content-Type: image/jpeg");
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 258
ImageJPEG($pic);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 259
break;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 260
case "gif":
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 261
header("Content-Type: image/gif");
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 262
ImageGIF($pic);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 263
break;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 264
case "png":
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 265
default:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 266
header("Content-Type: image/png");
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 267
ImagePNG($pic);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 268
break;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 269
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 270
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 271
// kill GD images (removes from memory)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 272
ImageDestroy($this->im);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 273
ImageDestroy($this->im2);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 274
ImageDestroy($pic);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 275
if(!empty($this->im3))
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 276
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 277
ImageDestroy($this->im3);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 278
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 279
exit();
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 280
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 281
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 282
function make_image()
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 283
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 284
//////////////////////////////////////////////////////
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 285
////// Create Images + initialise a few things
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 286
//////////////////////////////////////////////////////
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 287
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 288
// seed random number generator
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 289
// PHP 4.2.0+ doesn't need this, but lower versions will
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 290
$this->seed_func($this->make_seed());
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 291
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 292
// how faded should the bg be? (100=totally gone, 0=bright as the day)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 293
// to test how much protection the bg noise gives, take a screenshot of the freeCap image
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 294
// and take it into a photo editor. play with contrast and brightness.
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 295
// If you can remove most of the bg, then it's not a good enough percentage
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 296
switch($this->bg_type)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 297
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 298
case 0:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 299
break;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 300
case 1:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 301
case 2:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 302
$bg_fade_pct = 65;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 303
break;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 304
case 3:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 305
$bg_fade_pct = 50;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 306
break;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 307
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 308
// slightly randomise the bg fade
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 309
$bg_fade_pct += $this->rand_func(-2,2);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 310
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 311
// read each font and get font character widths
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 312
// $font_widths = Array();
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 313
// for($i=0 ; $i<sizeof($this->font_locations) ; $i++)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 314
// {
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 315
// $handle = fopen($this->font_locations[$i],"r");
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 316
// // read header of GD font, up to char width
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 317
// $c_wid = fread($handle,15);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 318
// $font_widths[$i] = ord($c_wid{8})+ord($c_wid{9})+ord($c_wid{10})+ord($c_wid{11});
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 319
// fclose($handle);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 320
// }
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 321
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 322
// modify image width depending on maximum possible length of word
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 323
// you shouldn't need to use words > 6 chars in length really.
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 324
$width = ($this->max_word_length*($this->font_size+10)+75);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 325
$height = 90;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 326
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 327
$this->im = ImageCreateTrueColor($width, $height);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 328
$this->im2 = ImageCreateTrueColor($width, $height);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 329
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 330
////////////////////////////////////////////////////////
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 331
// GENERATE IMAGE //
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 332
////////////////////////////////////////////////////////
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 333
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 334
$word = $this->get_code();
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 335
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 336
// save hash of word for comparison
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 337
// using hash so that if there's an insecurity elsewhere (eg on the form processor),
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 338
// an attacker could only get the hash
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 339
// also, shared servers usually give all users access to the session files
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 340
// echo `ls /tmp`; and echo `more /tmp/someone_elses_session_file`; usually work
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 341
// so even if your site is 100% secure, someone else's site on your server might not be
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 342
// hence, even if attackers can read the session file, they can't get the freeCap word
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 343
// (though most hashes are easy to brute force for simple strings)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 344
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 345
//////////////////////////////////////////////////////
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 346
////// Fill BGs and Allocate Colours:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 347
//////////////////////////////////////////////////////
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 348
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 349
// set tag colour
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 350
// have to do this before any distortion
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 351
// (otherwise colour allocation fails when bg type is 1)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 352
$tag_col = ImageColorAllocate($this->im,10,10,10);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 353
$site_tag_col2 = ImageColorAllocate($this->im2,0,0,0);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 354
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 355
// set debug colours (text colours are set later)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 356
$debug = ImageColorAllocate($this->im, 255, 0, 0);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 357
$debug2 = ImageColorAllocate($this->im2, 255, 0, 0);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 358
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 359
// set background colour (can change to any colour not in possible $text_col range)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 360
// it doesn't matter as it'll be transparent or coloured over.
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 361
// if you're using bg_type 3, you might want to try to ensure that the color chosen
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 362
// below doesn't appear too much in any of your background images.
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 363
$bg = ImageColorAllocate($this->im, 254, 254, 254);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 364
$bg2 = ImageColorAllocate($this->im2, 254, 254, 254);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 365
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 366
// set transparencies
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 367
ImageColorTransparent($this->im,$bg);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 368
// im2 transparent to allow characters to overlap slightly while morphing
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 369
ImageColorTransparent($this->im2,$bg2);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 370
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 371
// fill backgrounds
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 372
ImageFill($this->im,0,0,$bg);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 373
ImageFill($this->im2,0,0,$bg2);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 374
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 375
if($this->bg_type!=0)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 376
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 377
// generate noisy background, to be merged with CAPTCHA later
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 378
// any suggestions on how best to do this much appreciated
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 379
// sample code would be even better!
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 380
// I'm not an OCR expert (hell, I'm not even an image expert; puremango.co.uk was designed in MsPaint)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 381
// so the noise models are based around my -guesswork- as to what would make it hard for an OCR prog
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 382
// ideally, the character obfuscation would be strong enough not to need additional background noise
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 383
// in any case, I hope at least one of the options given here provide some extra security!
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 384
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 385
$this->im3 = ImageCreateTrueColor($width,$height);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 386
$temp_bg = ImageCreateTrueColor($width*1.5,$height*1.5);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 387
$bg3 = ImageColorAllocate($this->im3,255,255,255);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 388
ImageFill($this->im3,0,0,$bg3);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 389
$temp_bg_col = ImageColorAllocate($temp_bg,255,255,255);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 390
ImageFill($temp_bg,0,0,$temp_bg_col);
558
+ − 391
401
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 392
// we draw all noise onto temp_bg
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 393
// then if we're morphing, merge from temp_bg to im3
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 394
// or if not, just copy a $widthx$height portion of $temp_bg to $this->im3
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 395
// temp_bg is much larger so that when morphing, the edges retain the noise.
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 396
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 397
if($this->bg_type==1)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 398
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 399
// grid bg:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 400
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 401
// draw grid on x
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 402
for($i=$this->rand_func(6,20) ; $i<$width*2 ; $i+=$this->rand_func(10,25))
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 403
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 404
ImageSetThickness($temp_bg,$this->rand_func(2,6));
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 405
$text_r = $this->rand_func(100,150);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 406
$text_g = $this->rand_func(100,150);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 407
$text_b = $this->rand_func(100,150);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 408
$text_colour3 = ImageColorAllocate($temp_bg, $text_r, $text_g, $text_b);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 409
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 410
ImageLine($temp_bg,$i,0,$i,$height*2,$text_colour3);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 411
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 412
// draw grid on y
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 413
for($i=$this->rand_func(6,20) ; $i<$height*2 ; $i+=$this->rand_func(10,25))
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 414
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 415
ImageSetThickness($temp_bg,$this->rand_func(2,6));
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 416
$text_r = $this->rand_func(100,150);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 417
$text_g = $this->rand_func(100,150);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 418
$text_b = $this->rand_func(100,150);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 419
$text_colour3 = ImageColorAllocate($temp_bg, $text_r, $text_g, $text_b);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 420
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 421
ImageLine($temp_bg,0,$i,$width*2, $i ,$text_colour3);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 422
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 423
} else if($this->bg_type==2) {
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 424
// draw squiggles!
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 425
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 426
$bg3 = ImageColorAllocate($this->im3,255,255,255);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 427
ImageFill($this->im3,0,0,$bg3);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 428
ImageSetThickness($temp_bg,4);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 429
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 430
for($i=0 ; $i<strlen($word)+1 ; $i++)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 431
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 432
$text_r = $this->rand_func(100,150);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 433
$text_g = $this->rand_func(100,150);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 434
$text_b = $this->rand_func(100,150);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 435
$text_colour3 = ImageColorAllocate($temp_bg, $text_r, $text_g, $text_b);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 436
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 437
$points = Array();
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 438
// draw random squiggle for each character
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 439
// the longer the loop, the more complex the squiggle
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 440
// keep random so OCR can't say "if found shape has 10 points, ignore it"
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 441
// each squiggle will, however, be a closed shape, so OCR could try to find
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 442
// line terminations and start from there. (I don't think they're that advanced yet..)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 443
for($j=1 ; $j<$this->rand_func(5,10) ; $j++)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 444
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 445
$points[] = $this->rand_func(1*(20*($i+1)),1*(50*($i+1)));
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 446
$points[] = $this->rand_func(30,$height+30);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 447
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 448
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 449
ImagePolygon($temp_bg,$points,intval(sizeof($points)/2),$text_colour3);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 450
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 451
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 452
} else if($this->bg_type==3) {
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 453
// take random chunks of $this->bg_images and paste them onto the background
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 454
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 455
for($i=0 ; $i<sizeof($this->bg_images) ; $i++)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 456
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 457
// read each image and its size
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 458
$temp_im[$i] = ImageCreateFromJPEG($this->bg_images[$i]);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 459
$temp_width[$i] = imagesx($temp_im[$i]);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 460
$temp_height[$i] = imagesy($temp_im[$i]);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 461
}
558
+ − 462
401
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 463
$blocksize = $this->rand_func(20,60);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 464
for($i=0 ; $i<$width*2 ; $i+=$blocksize)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 465
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 466
// could randomise blocksize here... hardly matters
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 467
for($j=0 ; $j<$height*2 ; $j+=$blocksize)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 468
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 469
$this->image_index = $this->rand_func(0,sizeof($temp_im)-1);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 470
$cut_x = $this->rand_func(0,$temp_width[$this->image_index]-$blocksize);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 471
$cut_y = $this->rand_func(0,$temp_height[$this->image_index]-$blocksize);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 472
ImageCopy($temp_bg, $temp_im[$this->image_index], $i, $j, $cut_x, $cut_y, $blocksize, $blocksize);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 473
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 474
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 475
for($i=0 ; $i<sizeof($temp_im) ; $i++)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 476
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 477
// remove bgs from memory
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 478
ImageDestroy($temp_im[$i]);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 479
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 480
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 481
// for debug:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 482
//sendImage($temp_bg);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 483
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 484
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 485
// for debug:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 486
//sendImage($this->im3);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 487
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 488
if($this->morph_bg)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 489
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 490
// morph background
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 491
// we do this separately to the main text morph because:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 492
// a) the main text morph is done char-by-char, this is done across whole image
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 493
// b) if an attacker could un-morph the bg, it would un-morph the CAPTCHA
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 494
// hence bg is morphed differently to text
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 495
// why do we morph it at all? it might make it harder for an attacker to remove the background
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 496
// morph_chunk 1 looks better but takes longer
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 497
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 498
// this is a different and less perfect morph than the one we do on the CAPTCHA
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 499
// occasonally you get some dark background showing through around the edges
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 500
// it doesn't need to be perfect as it's only the bg.
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 501
$morph_chunk = $this->rand_func(1,5);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 502
$morph_y = 0;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 503
for($x=0 ; $x<$width ; $x+=$morph_chunk)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 504
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 505
$morph_chunk = $this->rand_func(1,5);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 506
$morph_y += $this->rand_func(-1,1);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 507
ImageCopy($this->im3, $temp_bg, $x, 0, $x+30, 30+$morph_y, $morph_chunk, $height*2);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 508
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 509
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 510
ImageCopy($temp_bg, $this->im3, 0, 0, 0, 0, $width, $height);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 511
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 512
$morph_x = 0;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 513
for($y=0 ; $y<=$height; $y+=$morph_chunk)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 514
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 515
$morph_chunk = $this->rand_func(1,5);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 516
$morph_x += $this->rand_func(-1,1);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 517
ImageCopy($this->im3, $temp_bg, $morph_x, $y, 0, $y, $width, $morph_chunk);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 518
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 519
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 520
} else {
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 521
// just copy temp_bg onto im3
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 522
ImageCopy($this->im3,$temp_bg,0,0,30,30,$width,$height);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 523
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 524
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 525
ImageDestroy($temp_bg);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 526
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 527
if($this->blur_bg)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 528
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 529
$this->myImageBlur($this->im3);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 530
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 531
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 532
// for debug:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 533
//sendImage($this->im3);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 534
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 535
//////////////////////////////////////////////////////
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 536
////// Write Word
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 537
//////////////////////////////////////////////////////
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 538
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 539
// write word in random starting X position
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 540
$word_start_x = $this->rand_func(5,32);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 541
// y positions jiggled about later
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 542
$word_start_y = 50;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 543
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 544
// use last pixelwidth
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 545
$font_pixelwidth = $this->font_size + 10;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 546
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 547
if($this->col_type==0)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 548
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 549
$text_r = $this->rand_color();
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 550
$text_g = $this->rand_color();
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 551
$text_b = $this->rand_color();
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 552
$text_colour2 = ImageColorAllocate($this->im2, $text_r, $text_g, $text_b);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 553
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 554
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 555
// write each char in different font
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 556
for($i=0 ; $i<strlen($word) ; $i++)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 557
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 558
if($this->col_type==1)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 559
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 560
$text_r = $this->rand_color();
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 561
$text_g = $this->rand_color();
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 562
$text_b = $this->rand_color();
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 563
$text_colour2 = ImageColorAllocate($this->im2, $text_r, $text_g, $text_b);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 564
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 565
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 566
$j = $this->rand_func(0,sizeof($this->font_locations)-1);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 567
// $font = ImageLoadFont($this->font_locations[$j]);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 568
// ImageString($this->im2, $font, $word_start_x+($font_widths[$j]*$i), $word_start_y, $word{$i}, $text_colour2);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 569
ImageTTFText($this->im2, $this->font_size, 0, $word_start_x+(($font_pixelwidth)*$i), $word_start_y, $text_colour2, $this->font_locations[$j], $word{$i});
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 570
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 571
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 572
// for debug:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 573
// $this->sendImage($this->im2);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 574
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 575
//////////////////////////////////////////////////////
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 576
////// Morph Image:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 577
//////////////////////////////////////////////////////
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 578
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 579
// calculate how big the text is in pixels
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 580
// (so we only morph what we need to)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 581
$word_pix_size = $word_start_x+(strlen($word)*$font_pixelwidth);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 582
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 583
// firstly move each character up or down a bit:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 584
$y_pos = 0;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 585
for($i=$word_start_x ; $i<$word_pix_size ; $i+=$font_pixelwidth)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 586
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 587
// move on Y axis
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 588
// deviates at least 4 pixels between each letter
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 589
$prev_y = $y_pos;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 590
do{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 591
$y_pos = $this->rand_func(-5,5);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 592
} while($y_pos<$prev_y+2 && $y_pos>$prev_y-2);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 593
ImageCopy($this->im, $this->im2, $i, $y_pos, $i, 0, $font_pixelwidth, $height);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 594
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 595
// for debug:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 596
// ImageRectangle($this->im,$i,$y_pos+10,$i+$font_pixelwidth,$y_pos+70,$debug);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 597
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 598
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 599
// for debug:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 600
// $this->sendImage($this->im);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 601
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 602
ImageFilledRectangle($this->im2,0,0,$width,$height,$bg2);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 603
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 604
// randomly morph each character individually on x-axis
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 605
// this is where the main distortion happens
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 606
// massively improved since v1.2
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 607
$y_chunk = 1;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 608
$morph_factor = 1;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 609
$morph_x = 0;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 610
for($j=0 ; $j<strlen($word) ; $j++)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 611
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 612
$y_pos = 0;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 613
for($i=0 ; $i<=$height; $i+=$y_chunk)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 614
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 615
$orig_x = $word_start_x+($j*$font_pixelwidth);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 616
// morph x += so that instead of deviating from orig x each time, we deviate from where we last deviated to
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 617
// get it? instead of a zig zag, we get more of a sine wave.
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 618
// I wish we could deviate more but it looks crap if we do.
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 619
$morph_x += $this->rand_func(-$morph_factor,$morph_factor);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 620
// had to change this to ImageCopyMerge when starting using ImageCreateTrueColor
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 621
// according to the manual; "when (pct is) 100 this function behaves identically to imagecopy()"
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 622
// but this is NOT true when dealing with transparencies...
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 623
ImageCopyMerge($this->im2, $this->im, $orig_x+$morph_x, $i+$y_pos, $orig_x, $i, $font_pixelwidth, $y_chunk, 100);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 624
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 625
// for debug:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 626
//ImageLine($this->im2, $orig_x+$morph_x, $i, $orig_x+$morph_x+1, $i+$y_chunk, $debug2);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 627
//ImageLine($this->im2, $orig_x+$morph_x+$font_pixelwidth, $i, $orig_x+$morph_x+$font_pixelwidth+1, $i+$y_chunk, $debug2);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 628
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 629
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 630
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 631
// for debug:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 632
//sendImage($this->im2);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 633
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 634
ImageFilledRectangle($this->im,0,0,$width,$height,$bg);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 635
// now do the same on the y-axis
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 636
// (much easier because we can just do it across the whole image, don't have to do it char-by-char)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 637
$y_pos = 0;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 638
$x_chunk = 1;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 639
for($i=0 ; $i<=$width ; $i+=$x_chunk)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 640
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 641
// can result in image going too far off on Y-axis;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 642
// not much I can do about that, apart from make image bigger
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 643
// again, I wish I could do 1.5 pixels
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 644
$y_pos += $this->rand_func(-1,1);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 645
ImageCopy($this->im, $this->im2, $i, $y_pos, $i, 0, $x_chunk, $height);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 646
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 647
// for debug:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 648
//ImageLine($this->im,$i+$x_chunk,0,$i+$x_chunk,100,$debug);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 649
//ImageLine($this->im,$i,$y_pos+25,$i+$x_chunk,$y_pos+25,$debug);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 650
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 651
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 652
// for debug:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 653
//sendImage($this->im);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 654
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 655
// blur edges:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 656
// doesn't really add any security, but looks a lot nicer, and renders text a little easier to read
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 657
// for humans (hopefully not for OCRs, but if you know better, feel free to disable this function)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 658
// (and if you do, let me know why)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 659
$this->myImageBlur($this->im);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 660
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 661
// for debug:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 662
//sendImage($this->im);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 663
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 664
if($this->output!="jpg" && $this->bg_type==0)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 665
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 666
// make background transparent
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 667
ImageColorTransparent($this->im,$bg);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 668
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 669
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 670
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 671
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 672
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 673
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 674
//////////////////////////////////////////////////////
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 675
////// Try to avoid 'free p*rn' style CAPTCHA re-use
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 676
//////////////////////////////////////////////////////
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 677
// ('*'ed to stop my site coming up for certain keyword searches on google)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 678
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 679
// can obscure CAPTCHA word in some cases..
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 680
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 681
// write site tags 'shining through' the morphed image
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 682
ImageFilledRectangle($this->im2,0,0,$width,$height,$bg2);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 683
if(is_array($this->site_tags))
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 684
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 685
for($i=0 ; $i<sizeof($this->site_tags) ; $i++)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 686
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 687
// ensure tags are centered
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 688
$tag_width = strlen($this->site_tags[$i])*6;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 689
// write tag is chosen position
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 690
if($this->tag_pos==0 || $this->tag_pos==2)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 691
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 692
// write at top
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 693
ImageString($this->im2, 2, intval($width/2)-intval($tag_width/2), (10*$i), $this->site_tags[$i], $site_tag_col2);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 694
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 695
if($this->tag_pos==1 || $this->tag_pos==2)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 696
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 697
// write at bottom
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 698
ImageString($this->im2, 2, intval($width/2)-intval($tag_width/2), ($height-34+($i*10)), $this->site_tags[$i], $site_tag_col2);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 699
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 700
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 701
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 702
ImageCopyMerge($this->im2,$this->im,0,0,0,0,$width,$height,80);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 703
ImageCopy($this->im,$this->im2,0,0,0,0,$width,$height);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 704
// for debug:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 705
//sendImage($this->im);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 706
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 707
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 708
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 709
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 710
//////////////////////////////////////////////////////
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 711
////// Merge with obfuscated background
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 712
//////////////////////////////////////////////////////
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 713
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 714
if($this->bg_type!=0)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 715
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 716
// merge bg image with CAPTCHA image to create smooth background
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 717
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 718
// fade bg:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 719
if($this->bg_type!=3)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 720
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 721
$temp_im = ImageCreateTrueColor($width,$height);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 722
$white = ImageColorAllocate($temp_im,255,255,255);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 723
ImageFill($temp_im,0,0,$white);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 724
ImageCopyMerge($this->im3,$temp_im,0,0,0,0,$width,$height,$bg_fade_pct);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 725
// for debug:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 726
//sendImage($this->im3);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 727
ImageDestroy($temp_im);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 728
$c_fade_pct = 50;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 729
} else {
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 730
$c_fade_pct = $bg_fade_pct;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 731
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 732
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 733
// captcha over bg:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 734
// might want to not blur if using this method
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 735
// otherwise leaves white-ish border around each letter
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 736
if($this->merge_type==1)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 737
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 738
ImageCopyMerge($this->im3,$this->im,0,0,0,0,$width,$height,100);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 739
ImageCopy($this->im,$this->im3,0,0,0,0,$width,$height);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 740
} else {
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 741
// bg over captcha:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 742
ImageCopyMerge($this->im,$this->im3,0,0,0,0,$width,$height,$c_fade_pct);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 743
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 744
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 745
// for debug:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 746
//sendImage($this->im);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 747
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 748
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 749
//////////////////////////////////////////////////////
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 750
////// Write tags, remove variables and output!
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 751
//////////////////////////////////////////////////////
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 752
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 753
// tag it
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 754
// feel free to remove/change
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 755
// but if it's not essential I'd appreciate you leaving it
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 756
// after all, I've put a lot of work into this and am giving it away for free
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 757
// the least you could do is give me credit (or buy me stuff from amazon!)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 758
// but I understand that in professional environments, your boss might not like this tag
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 759
// so that's cool.
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 760
$tag_str = "";
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 761
// for debug:
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 762
//$tag_str = "[".$word."]";
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 763
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 764
// ensure tag is right-aligned
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 765
$tag_width = strlen($tag_str)*6;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 766
// write tag
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 767
ImageString($this->im, 2, $width-$tag_width, $height-13, $tag_str, $tag_col);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 768
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 769
// unset all sensetive vars
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 770
// in case someone include()s this file on a shared server
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 771
// you might think this unneccessary, as it exit()s
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 772
// but by using register_shutdown_function
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 773
// on a -very- insecure shared server, they -might- be able to get the word
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 774
unset($word);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 775
// the below aren't really essential, but might aid an OCR attack if discovered.
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 776
// so we unset them
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 777
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 778
// output final image :-)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 779
$this->sendImage($this->im);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 780
// (sendImage also destroys all used images)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 781
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 782
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 783
function rand_func($s, $m)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 784
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 785
global $_starttime;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 786
$tn = microtime_float() - $_starttime;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 787
if ( $tn > 5 )
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 788
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 789
echo '<pre>';
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 790
enano_debug_print_backtrace();
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 791
echo '</pre>';
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 792
exit;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 793
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 794
$rf =& $this->rand_func;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 795
return $rf($s, $m);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 796
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 797
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 798
function seed_func($s)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 799
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 800
$rf =& $this->seed_func;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 801
return $rf($s);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 802
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 803
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 804
function hash_func($s)
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 805
{
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 806
$rf =& $this->hash_func;
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 807
return $rf($s);
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 808
}
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 809
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
changeset
+ − 810
}