 | [Solved] Photo Recognition mod |  |
 Posted: 06/19/2007 9:54 PM |
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Joined: Nov 01, 2006
Local time: 12:42 PM
Location: Denver, PA
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Hi Nightrider,
I installed the Photo Recognition Mod via easyMOD, with no errors to fix, although I did take out the one line copy command and did the copy's myself.
| Code:
|
##############################################################
## MOD Title: Photo Visual Confirmation
## MOD Author: Josh Yelon < > (Josh Yelon) N/A
## MOD Description:
## This patch to phpbb2 adds a new kind of Visual Confirmation,
## also known as a CAPTCHA. The person registering for an account must
## look at photographs and determine if they are photographs of animals
## or not.
## MOD Version: 1.0.1
##
## Installation Level: Easy
## Installation Time: 5 Minutes
## Files To Edit: admin/admin_board.php,
## includes/constants.php,
## includes/usercp_confirm.php,
## includes/usercp_register.php,
## language/lang_english/lang_admin.php,
## language/lang_english/lang_main.php,
## templates/subSilver/admin/board_config_body.tpl,
## templates/subSilver/profile_add_body.tpl
## Included Files: captcha-images/*.*
## License: http://opensource.org/licenses/gpl-license.php GNU General Public License v2
##############################################################
## For security purposes, please check: http://www.phpbb.com/mods/
## for the latest version of this MOD. Although MODs are checked
## before being allowed in the MODs Database there is no guarantee
## that there are no security problems within the MOD. No support
## will be given for MODs not found within the MODs Database which
## can be found at http://www.phpbb.com/mods/
##############################################################
## Author Notes:
##
## This patch to phpbb2 adds a new kind of Visual Confirmation,
## also known as a CAPTCHA. The person registering for an account must
## look at photographs and determine if they are photographs of animals
## or not.
##
## The captcha can be broken by a bot that has a copy of the photos. To
## do this, the bot must compare the presented images to the photos in
## the distribution. To make this a little harder, the mod randomly
## tweaks the gamma and randomly crops the images before presenting them
## to the user. Therefore, comparison requires more than a simple
## bit-for-bit equality test. This isn't a very strong protection,
## but it's better than nothing.
##
## The real strength of the captcha, however, is the fact that it's so
## easy for the board admin to replace the photos. A bot that doesn't
## have a copy of the photo library is at an almost crippling
## disadvantage. Once the photos have been replaced, this captcha is
## almost unbreakable.
##
## I have made it as easy as possible to drop in new photos. As you
## can see, there are two directories containing photos:
##
## images/captcha/animal
## images/captcha/non
##
## Which contain, respectively, animals and non-animals. All of the
## supplied images are 256x192 --- this is the optimal size. However,
## you can use images that are somewhat smaller or larger. All images
## must be jpegs. The filenames do not matter, although the extension
## must be jpg. It is recommended that the board admin delete all
## the supplied photos, and replace them with photos of his own.
##
## The supplied photos are kittens and cars. I intentionally didn't
## use a mix of different types of animals, or different types of
## non-animals. I feel that using two clear categories makes it
## easier for the human --- it is very easy to visually scan for
## kittens, but much harder to visually scan for animals-in-general.
##
## To enable the mod, you must browse to the board configuration
## page (admin_board.php), find the entry for "Visual Confirmation,"
## and select "Photos."
##
## This captcha requires the php GD extension. If you install this
## MOD without installing GD, the board configuration page will
## display the message "If you were to install the php GD extension,
## a photo-recognition mode would become available here."
##
## The code is quite small, and this mod integrates the new CAPTCHA
## cleanly into the phpbb2 2.0.21 codebase. It is my hope that the phpbb2
## developers will eventually include this mod with the distribution.
##
## This software is actually in the public domain, but the format of
## the license field above doesn't provide any means to specify that.
## Long story short, you can do anything at all with it.
##
##############################################################
## MOD History:
##
## YYYY-MM-DD - Version x.x.x
## - version notes go here
##
##############################################################
## Before Adding This MOD To Your Forum, You Should Back Up All Files Related To This MOD
##############################################################
#
#-----[ COPY ]--------------------------------------
#
copy captcha-images/*.* to images/captcha/*.*
#
#-----[ OPEN ]--------------------------------------
#
admin/admin_board.php
#
#-----[ FIND ]--------------------------------------
#
$confirm_yes = ($new['enable_confirm']) ? 'checked="checked"' : '';
$confirm_no = (!$new['enable_confirm']) ? 'checked="checked"' : '';
#
#-----[ REPLACE WITH ]--------------------------------------
#
$confirm_photos = ($new['enable_confirm'] == VISUAL_CONFIRM_PHOTOS) ? 'checked="checked"' : '';
$confirm_digits = ($new['enable_confirm'] == VISUAL_CONFIRM_DIGITS) ? 'checked="checked"' : '';
$confirm_disable = ($new['enable_confirm'] == VISUAL_CONFIRM_DISABLE) ? 'checked="checked"' : '';
if (!extension_loaded("gd")) {
$visual_explain = $lang['Visual_confirm_explain_nogd'];
} else {
$visual_explain = $lang['Visual_confirm_explain'];
$template->assign_block_vars('switch_enable_photos', array());
}
#
#-----[ FIND ]--------------------------------------
#
"L_VISUAL_CONFIRM_EXPLAIN" => $lang['Visual_confirm_explain'],
#
#-----[ REPLACE WITH ]--------------------------------------
#
"L_VISUAL_CONFIRM_EXPLAIN" => $visual_explain,
"L_VISUAL_CONFIRM_PHOTOS" => $lang['Visual_confirm_photos'],
"L_VISUAL_CONFIRM_DIGITS" => $lang['Visual_confirm_digits'],
"L_VISUAL_CONFIRM_DISABLE" => $lang['Visual_confirm_disable'],
#
#-----[ FIND ]--------------------------------------
#
"CONFIRM_ENABLE" => $confirm_yes,
"CONFIRM_DISABLE" => $confirm_no,
#
#-----[ REPLACE WITH ]--------------------------------------
#
"CONFIRM_PHOTOS" => $confirm_photos,
"CONFIRM_DIGITS" => $confirm_digits,
"CONFIRM_DISABLE" => $confirm_disable,
#
#-----[ OPEN ]--------------------------------------
#
includes/constants.php
#
#-----[ FIND ]--------------------------------------
#
define('USER_AVATAR_NONE', 0);
#
#-----[ BEFORE, ADD ]--------------------------------------
#
define('VISUAL_CONFIRM_DISABLE', 0);
define('VISUAL_CONFIRM_DIGITS', 1);
define('VISUAL_CONFIRM_PHOTOS', 2);
#
#-----[ OPEN ]--------------------------------------
#
includes/usercp_confirm.php
#
#-----[ FIND ]--------------------------------------
#
// We can we will generate a single filtered png
// Thanks to DavidMJ for emulating zlib within the code :)
#
#-----[ BEFORE, ADD ]--------------------------------------
#
if ($board_config['enable_confirm'] == VISUAL_CONFIRM_PHOTOS) {
if(!extension_loaded("gd")){
exit;
}
$idx = intval($HTTP_GET_VARS['idx']);
$code = substr(base_convert($code, 16, 2), $idx, 1);
if ($code == "0") {
$directory = $phpbb_root_path . "/images/captcha/non";
} else {
$directory = $phpbb_root_path . "/images/captcha/animal";
}
$options = array();
$dirlist = opendir($directory);
while( ($jpg = readdir($dirlist)) !== false) {
if(!is_dir($jpg)) {
if (strtolower(substr($jpg,-4,4)) == ".jpg") {
$options[] = $jpg;
}
}
}
closedir($dirlist);
if (empty($options)) {
exit;
}
$selindex = intval(base_convert(substr(dss_rand(), 0, 7), 16, 10));
$selindex = $selindex % count($options);
$fullpath = $directory . "/" . $options[$selindex];
$image = @imagecreatefromjpeg($fullpath);
if (!$image) {
exit;
}
$resultx = 112;
$resulty = 84;
mt_srand();
$targetx = @imagesx($image);
$targety = @imagesy($image);
$sourcex = mt_rand(($targetx * 7)/10, ($targetx * 9)/10);
$sourcey = mt_rand(($targety * 7)/10, ($targety * 9)/10);
$offx = mt_rand(0, $targetx - $sourcex);
$offy = mt_rand(0, $targety - $sourcey);
$sub = imagecreatetruecolor($resultx, $resulty);
@imagecopyresampled($sub, $image, 0, 0, $offx, $offy, $resultx, $resulty, $sourcex, $sourcey);
$image = $sub;
@imagegammacorrect($image, 1.0, (0.5 + mt_rand(0,1200)*0.001));
header('Content-Type: image/jpg');
header('Cache-control: no-cache, no-store');
@imagepng($image);
exit;
}
#
#-----[ OPEN ]--------------------------------------
#
includes/usercp_register.php
#
#-----[ FIND ]--------------------------------------
#
if ($row['code'] != $confirm_code)
{
$error = TRUE;
$error_msg .= ( ( isset($error_msg) ) ? '<br />' : '' ) . $lang['Confirm_code_wrong'];
#
#-----[ BEFORE, ADD ]--------------------------------------
#
if ($board_config['enable_confirm'] == VISUAL_CONFIRM_PHOTOS) {
$confirm_code = '';
for ($box=0; $box<20; $box++) {
if ($HTTP_POST_VARS["captchabox$box"] == "on") {
$confirm_code .= "1";
} else {
$confirm_code .= "0";
}
}
$row['code'] = substr(base_convert($row['code'], 16, 2), 0, 20);
}
#
#-----[ FIND ]--------------------------------------
#
// NB 0 (zero) could get confused with O (the letter) so we make change it
$code = dss_rand();
$code = substr(str_replace('0', 'Z', strtoupper(base_convert($code, 16, 35))), 2, 6);
#
#-----[ REPLACE WITH ]--------------------------------------
#
if ($board_config['enable_confirm'] == VISUAL_CONFIRM_DIGITS) {
// NB 0 (zero) could get confused with O (the letter) so we make change it
$code = dss_rand();
$code = substr(str_replace('0', 'Z', strtoupper(base_convert($code, 16, 35))), 2, 6);
}
if ($board_config['enable_confirm'] == VISUAL_CONFIRM_PHOTOS) {
// Each one in the code indicates 'animal', each zero 'non-animal'.
$code = dss_rand();
$code = substr($code, 0, 6);
}
#
#-----[ FIND ]--------------------------------------
#
$confirm_image = '<img src="' . append_sid("profile.$phpEx?mode=confirm&id=$confirm_id") . '" alt="" title="" />';
$s_hidden_fields .= '<input type="hidden" name="confirm_id" value="' . $confirm_id . '" />';
$template->assign_block_vars('switch_confirm', array());
#
#-----[ REPLACE WITH ]--------------------------------------
#
$s_hidden_fields .= '<input type="hidden" name="confirm_id" value="' . $confirm_id . '" />';
if ($board_config['enable_confirm'] == VISUAL_CONFIRM_DIGITS) {
$confirm_image = '<img src="' . append_sid("profile.$phpEx?mode=confirm&id=$confirm_id") . '" alt="" title="" />';
$template->assign_block_vars('switch_confirm_digits', array());
}
if ($board_config['enable_confirm'] == VISUAL_CONFIRM_PHOTOS) {
if (extension_loaded("gd")) {
$confirm_image = '<table>';
for ($tablerow=0; $tablerow<5; $tablerow++) {
$confirm_image .= '<tr>';
for ($tablecol=0; $tablecol<4; $tablecol++) {
$idx = $tablerow*4 + $tablecol;
$confirm_image .= '<td><img src="' . append_sid("profile.$phpEx?mode=confirm&id=$confirm_id&idx=$idx") . '" alt="" title="" /></td>';
$confirm_image .= '<td><input type="checkbox" name="captchabox' . "$idx" . '" /></td>';
$confirm_image .= '<td width=50></td>';
}
$confirm_image .= '</tr>';
}
$confirm_image .= '</table>';
}
$template->assign_block_vars('switch_confirm_photos', array());
}
#
#-----[ FIND ]--------------------------------------
#
'L_CONFIRM_CODE_EXPLAIN' => $lang['Confirm_code_explain'],
#
#-----[ REPLACE WITH ]--------------------------------------
#
'L_CONFIRM_CODE_EXPLAIN_DIGITS' => $lang['Confirm_code_explain_digits'],
'L_CONFIRM_CODE_EXPLAIN_PHOTOS' => (extension_loaded("gd") ? $lang['Confirm_code_explain_photos'] : $lang['Confirm_code_missing_gd']),
#
#-----[ OPEN ]--------------------------------------
#
language/lang_english/lang_admin.php
#
#-----[ FIND ]--------------------------------------
#
$lang['Visual_confirm_explain'] = 'Requires users enter a code defined by an image when registering.';
#
#-----[ REPLACE WITH ]--------------------------------------
#
$lang['Visual_confirm_explain'] = 'Requires registering users to either recognize objects in photos, or recognize digits in an image.';
$lang['Visual_confirm_explain_nogd'] = 'Requires registering users to recognize digits in an image. If you were to install the php GD extension, a photo-recognition mode would become available here.';
$lang['Visual_confirm_photos'] = 'Photos';
$lang['Visual_confirm_digits'] = 'Digits';
$lang['Visual_confirm_disable'] = 'None';
#
#-----[ OPEN ]--------------------------------------
#
language/lang_english/lang_main.php
#
#-----[ FIND ]--------------------------------------
#
$lang['Confirm_code_explain'] = 'Enter the code exactly as you see it. The code is case sensitive and zero has a diagonal line through it.';
#
#-----[ REPLACE WITH ]--------------------------------------
#
$lang['Confirm_code_explain_digits'] = 'Enter the code exactly as you see it. The code is case sensitive and zero has a diagonal line through it.';
$lang['Confirm_code_explain_photos'] = 'Put a check mark next to all photographs of animals. (This is a spam prevention mechanism).';
$lang['Confirm_code_missing_gd'] = 'Error: photo confirmation requires the PHP GD extension, which is not currently installed.';
#
#-----[ OPEN ]--------------------------------------
#
templates/subSilver/admin/board_config_body.tpl
#
#-----[ FIND ]--------------------------------------
#
<td class="row2"><input type="radio" name="enable_confirm" value="1" {CONFIRM_ENABLE} />{L_YES} <input type="radio" name="enable_confirm" value="0" {CONFIRM_DISABLE} />{L_NO}</td>
#
#-----[ REPLACE WITH ]--------------------------------------
#
<td class="row2">
<!-- BEGIN switch_enable_photos -->
<input type="radio" name="enable_confirm" value="2" {CONFIRM_PHOTOS} />{L_VISUAL_CONFIRM_PHOTOS}
<!-- END switch_enable_photos -->
<input type="radio" name="enable_confirm" value="1" {CONFIRM_DIGITS} />{L_VISUAL_CONFIRM_DIGITS}
<input type="radio" name="enable_confirm" value="0" {CONFIRM_DISABLE} />{L_VISUAL_CONFIRM_DISABLE}
</td>
#
#-----[ OPEN ]--------------------------------------
#
templates/subSilver/profile_add_body.tpl
#
#-----[ FIND ]--------------------------------------
#
<!-- Visual Confirmation -->
<!-- BEGIN switch_confirm -->
#
#-----[ REPLACE WITH ]--------------------------------------
#
<!-- Visual Confirmation, Digits -->
<!-- BEGIN switch_confirm_digits -->
#
#-----[ FIND ]--------------------------------------
#
<td class="row1"><span class="gen">{L_CONFIRM_CODE}: * </span><br /><span class="gensmall">{L_CONFIRM_CODE_EXPLAIN}</span></td>
#
#-----[ REPLACE WITH ]--------------------------------------
#
<td class="row1"><span class="gen">{L_CONFIRM_CODE}: * </span><br /><span class="gensmall">{L_CONFIRM_CODE_EXPLAIN_DIGITS}</span></td>
#
#-----[ FIND ]--------------------------------------
#
<!-- END switch_confirm -->
#
#-----[ REPLACE WITH ]--------------------------------------
#
<!-- END switch_confirm_digits -->
<!-- Visual Confirmation, Photos -->
<!-- BEGIN switch_confirm_photos -->
<tr>
<td class="row1" colspan="2" align="center">
<span class="gensmall">{L_CONFIRM_CODE_IMPAIRED}</span><br /><br />
<span class="gen">{L_CONFIRM_CODE_EXPLAIN_PHOTOS}</span><br /><br />
{CONFIRM_IMG}<br /><br />
</td>
</tr>
<!-- END switch_confirm_photos -->
#
#-----[ SAVE/CLOSE ALL FILES ]------------------------------------------
#
# EoM
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The mod is not showing up when registering and I can't see why! I have checked all of the added code and it's all there. Which would make sense since it was installed with easymod with no errors. I know that the images are in the right spot, and if they were not we would still be able to see 20 little boxes with red x's, but it's just like the whole box is not there on the register page.
This is on swirlweddingforum.co.uk and you had helped us get the custom profile fields mod working. I don't know if this has anything to do with it, but wanted to let you know just in case.
Also, I have checked the upgrades of template files just to make sure all the captcha stuff is there, and I switched the settings to the default numbers captcha that comes with phpbb and that doesn't show up either, so something is wrong somewhere.
Let me know what you think, if you need to see some files, need access to the server, ect.
Thanks Blake  |
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| Re: Photo Recognition mod | |
| Posted: 06/20/2007 1:10 AM |
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| Site Admin |
| Posts |
30757 |
| Word Cnt. |
2,628,690 |
| BDay |
Jul 28 |
| Sign |
Leo |
| Sex |
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Joined: Sep 25, 2004
Local time: 12:42 PM
Location: St Pete, FL
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The reason why this wasn't working is because you installed a MOD that changed from using the profile_add_body.tpl file during registration to a new file named profile_registration_body.tpl. So the code in the MOD that was added to the profile_add_body.tpl file needed to actually be added to the profile_registration_body.tpl file instead. I corrected the problem and all seems to be working properly now. I didn't bother trying to register though, so you might want to test that too...
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| Re: [Solved] Photo Recognition mod | |
| Posted: 06/20/2007 7:38 AM |
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| Caravan |
| Posts |
282 |
| Word Cnt. |
31,380 |
| BDay |
Apr 14 |
| Sign |
Aries |
| Sex |
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Joined: Nov 01, 2006
Local time: 12:42 PM
Location: Denver, PA
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Thank you so much Nightrider, was that the custom profile fields mod that changed the file? Or something else? I have only added a few mods for this site, so I am not aware of any others that might have been installed by the owner. Thanks for the help and I will remember that new file in case there are any other profile_add_body.tpl changes.
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| Re: Photo Recognition mod | |
| Posted: 06/20/2007 4:34 PM |
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| Site Admin |
| Posts |
30757 |
| Word Cnt. |
2,628,690 |
| BDay |
Jul 28 |
| Sign |
Leo |
| Sex |
|
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Joined: Sep 25, 2004
Local time: 12:42 PM
Location: St Pete, FL
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No, it doesn't appear to be the Custom Profile Fields MOD that added this new file. We dealt with this file once before, but I had completely forgotten about it when trying to figure this out. So it took me a while to figure out why even though the code looked perfect why it wasn't working...
I really have no idea what the MOD is that did this because I think this is the only site where I have seen it. I'm sure it is some kind of Simple Registration MOD since it reduces the number of available fields during the registration process...
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| Re: [Solved] Photo Recognition mod | |
| Posted: 06/20/2007 6:25 PM |
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| Caravan |
| Posts |
282 |
| Word Cnt. |
31,380 |
| BDay |
Apr 14 |
| Sign |
Aries |
| Sex |
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Joined: Nov 01, 2006
Local time: 12:42 PM
Location: Denver, PA
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| That is what I figured, some mod that made the registration page simple, unfortunately it wasn't run through easyMOD so there was no record of it when I looked. I thank you again for your help! |
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| Re: Photo Recognition mod | |
| Posted: 06/21/2007 12:31 AM |
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| Site Admin |
| Posts |
30757 |
| Word Cnt. |
2,628,690 |
| BDay |
Jul 28 |
| Sign |
Leo |
| Sex |
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Joined: Sep 25, 2004
Local time: 12:42 PM
Location: St Pete, FL
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Hopefully the next time this comes up, one of us will remember about this MOD so that it won't take as long to figure out. Every MOD that modifies the profile_add_body.tpl file on that forum will probably have a problem now because of this...
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| Re: [Solved] Photo Recognition mod | |
| Posted: 06/21/2007 7:23 AM |
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| Caravan |
| Posts |
282 |
| Word Cnt. |
31,380 |
| BDay |
Apr 14 |
| Sign |
Aries |
| Sex |
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Joined: Nov 01, 2006
Local time: 12:42 PM
Location: Denver, PA
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What a pain! I will try my best to remember this for next time  |
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| Re: [Solved] Photo Recognition mod | |
| Posted: 06/21/2007 4:13 PM |
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| Site Admin |
| Posts |
30757 |
| Word Cnt. |
2,628,690 |
| BDay |
Jul 28 |
| Sign |
Leo |
| Sex |
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Joined: Sep 25, 2004
Local time: 12:42 PM
Location: St Pete, FL
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Depending on what the MOD adds to the profile_add_body.tpl file will determine whether it will be a problem or not. It may be possible simply to change the OPEN to point to the profile_registration_body.tpl file in the MOD script before installing it, or you might have to duplicate that section and point the new part to the profile_registration_body.tpl file so that EM can make the changes in both places...
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