author | Dan |
Sun, 11 Jan 2009 21:35:39 -0500 | |
changeset 808 | 97cd1a3229d0 |
parent 558 | fd082123f2f4 |
child 1227 | bdac73ed481e |
permissions | -rw-r--r-- |
401
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
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1 |
<?php |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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2 |
/************************************************************\ |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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3 |
* |
6ae6e387a0e3
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4 |
* freeCap v1.4.1 Copyright 2005 Howard Yeend |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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5 |
* www.puremango.co.uk |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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6 |
* |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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7 |
* This file is part of freeCap. |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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8 |
* |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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9 |
* freeCap is free software; you can redistribute it and/or modify |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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10 |
* it under the terms of the GNU General Public License as published by |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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11 |
* the Free Software Foundation; either version 2 of the License, or |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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12 |
* (at your option) any later version. |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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13 |
* |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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14 |
* freeCap is distributed in the hope that it will be useful, |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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15 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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16 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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17 |
* GNU General Public License for more details. |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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18 |
* |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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19 |
* You should have received a copy of the GNU General Public License |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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20 |
* along with freeCap; if not, write to the Free Software |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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21 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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22 |
* |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
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23 |
* |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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24 |
\************************************************************/ |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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25 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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26 |
/** |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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27 |
* A port of the freeCap captcha engine to Enano. |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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28 |
*/ |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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29 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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30 |
class captcha_engine_freecap extends captcha_base |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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31 |
{ |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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32 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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53 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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54 |
function __construct($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.
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55 |
{ |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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56 |
parent::__construct($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.
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57 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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58 |
// try to avoid the 'free p*rn' method of CAPTCHA circumvention |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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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.
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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.
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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.
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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.
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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.
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64 |
// reword or add lines as you please |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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65 |
// or if you don't want any text: |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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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.
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67 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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68 |
// where to write the above: |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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69 |
// 0=top |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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70 |
// 1=bottom |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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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.
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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.
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73 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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74 |
// functions to call for random number generation |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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75 |
// mt_rand produces 'better' random numbers |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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76 |
// but if your server doesn't support it, it's fine to use rand instead |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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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.
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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.
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79 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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80 |
// which type of hash to use? |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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81 |
// possible values: "sha1", "md5", "crc32" |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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82 |
// sha1 supported by PHP4.3.0+ |
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Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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83 |
// md5 supported by PHP3+ |
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Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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84 |
// crc32 supported by PHP4.0.1+ |
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Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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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.
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86 |
// store in session so can validate in form processor |
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Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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87 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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88 |
// image type: |
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Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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89 |
// possible values: "jpg", "png", "gif" |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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90 |
// jpg doesn't support transparency (transparent bg option ends up white) |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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91 |
// png isn't supported by old browsers (see http://www.libpng.org/pub/png/pngstatus.html) |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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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.
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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.
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94 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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95 |
// 0=generate pseudo-random string, true=use dictionary |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
96 |
// dictionary is easier to recognise |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
97 |
// - both for humans and computers, so use random string if you're paranoid. |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
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
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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 ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
102 |
// then the dictionary should be placed in c:\website\dict.txt |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
103 |
// test your server's config by trying to access the dictionary through a web browser |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
104 |
// you should NOT be able to view the contents. |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
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.
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|
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:
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|
107 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
108 |
// used to calculate image width, and for non-dictionary word generation |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
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.
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|
110 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
111 |
// text colour |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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changeset
|
112 |
// 0=one random colour for all letters |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
113 |
// 1=different random colour for each letter |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
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.
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|
115 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
116 |
// maximum times a user can refresh the image |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
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 ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
118 |
// further notes re: BF attacks in "avoid brute force attacks" section, below |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
119 |
// on the other hand, those attempting OCR will find the ability to request new images |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
120 |
// very useful; if they can't crack one, just grab an easier target... |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
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.
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|
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
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diff
changeset
|
123 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
124 |
// list of fonts to use |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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diff
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|
125 |
// font size should be around 35 pixels wide for each character. |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
126 |
// you can use my GD fontmaker script at www.puremango.co.uk to create your own fonts |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
127 |
// There are other programs to can create GD fonts, but my script allows a greater |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
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|
128 |
// degree of control over exactly how wide each character is, and is therefore |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
129 |
// recommended for 'special' uses. For normal use of GD fonts, |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
130 |
// the GDFontGenerator @ http://www.philiplb.de is excellent for convering ttf to GD |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
131 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
132 |
// the fonts included with freeCap *only* include lowercase alphabetic characters |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
133 |
// so are not suitable for most other uses |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
134 |
// to increase security, you really should add other fonts |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
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
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|
136 |
//ENANO_ROOT . "/includes/captcha/fonts/assimila.ttf", |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
137 |
//ENANO_ROOT . "/includes/captcha/fonts/elephant.ttf", |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
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|
138 |
//ENANO_ROOT . "/includes/captcha/fonts/swash_normal.ttf", |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
139 |
//ENANO_ROOT . "/includes/captcha/fonts/.ttf", |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
140 |
//ENANO_ROOT . "/includes/captcha/fonts/trekker_regular.ttf" |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
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changeset
|
141 |
ENANO_ROOT . "/includes/captcha/fonts/FreeMonoBold.ttf", |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($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
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|
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.
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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.
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parents:
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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 ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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parents:
diff
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|
175 |
// you shouldn't need to edit anything below this, but it's extensively commented if you do want to play |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
diff
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|
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 ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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parents:
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changeset
|
177 |
// hope this script saves some spam :-) |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
178 |
} |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
179 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
180 |
////////////////////////////////////////////////////// |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
181 |
////// Functions: |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
182 |
////////////////////////////////////////////////////// |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
183 |
function make_seed() { |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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parents:
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|
184 |
// from http://php.net/srand |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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parents:
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|
185 |
list($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.
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parents:
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|
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.
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|
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.
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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.
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|
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.
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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.
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|
192 |
{ |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
193 |
// needs darker colour.. |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
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.
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|
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.
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|
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.
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|
197 |
} |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
198 |
} |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
199 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
200 |
function myImageBlur($im) |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
201 |
{ |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
202 |
// w00t. my very own blur function |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
203 |
// in GD2, there's a gaussian blur function. bunch of bloody show-offs... :-) |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
204 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
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.
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|
206 |
$height = imagesy($im); |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
207 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
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.
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|
209 |
$bg = ImageColorAllocate($temp_im,150,150,150); |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
210 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
211 |
// preserves transparency if in orig image |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
212 |
ImageColorTransparent($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.
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changeset
|
213 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
214 |
// fill bg |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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changeset
|
215 |
ImageFill($temp_im,0,0,$bg); |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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changeset
|
216 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
217 |
// anything higher than 3 makes it totally unreadable |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
218 |
// might be useful in a 'real' blur function, though (ie blurring pictures not text) |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
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.
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|
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.
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changeset
|
221 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
222 |
// blur by merging with itself at different x/y offsets: |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
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|
223 |
ImageCopyMerge($temp_im, $im, 0, 0, 0, $distance, $width, $height-$distance, 70); |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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|
224 |
ImageCopyMerge($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:
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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
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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:
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changeset
|
227 |
// remove temp image |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
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|
228 |
ImageDestroy($temp_im); |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
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changeset
|
229 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
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|
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:
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|
231 |
} |
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
Dan
parents:
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changeset
|
232 |
|
6ae6e387a0e3
Implemented a new CAPTCHA API; the frontend ($session->{make,get}_captcha) is API-compatible but the backend (the captcha class) is deprecated.
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parents:
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|
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:
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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 |
} |