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login.inc.php #9

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70 changes: 70 additions & 0 deletions include/login.inc.php
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Original file line number Diff line number Diff line change
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<?php
defined('CRYPTO_PATH') or die('Hacking attempt!');

$conf['cryptographp']['template'] = 'login';
include(CRYPTO_PATH . 'include/common.inc.php');

/********************************************************************
* 1. Inject CAPTCHA container into Bootstrap Darkroom login page
********************************************************************/
add_event_handler('loc_end_page_header', 'crypto_login_add_prefilter');

function crypto_login_add_prefilter()
{
global $template;
try {
$template->set_prefilter('identification', 'crypto_login_prefilter');
} catch (Throwable $t) {
file_put_contents(CRYPTO_PATH . 'debug.log', date('Y-m-d H:i:s') . " - prefilter error: {$t->getMessage()}\n", FILE_APPEND);
}
}

function crypto_login_prefilter($content)
{
// Simply wrap {$CRYPTO.parsed_content} in a Bootstrap Darkroom container
$captcha_block = <<<HTML
<div class="form-group crypto-captcha-block">
<div class="col-sm-offset-2 col-sm-4">
{\$CRYPTO.parsed_content}
</div>
</div>
HTML;

$search = '#(<input[^>]*type="submit"[^>]*>)#i';
$replace = $captcha_block . "\n$1";

$new = @preg_replace($search, $replace, $content, 1);
return $new === null ? $content : $new;
}

/********************************************************************
* 2. Block login completely if CAPTCHA fails
********************************************************************/
add_event_handler('try_log_user', 'crypto_login_block_login', EVENT_HANDLER_PRIORITY_NEUTRAL, 4);

function crypto_login_block_login($success, $username, $password, $remember_me)
{
global $conf, $page;

if (empty($conf['cryptographp']['activate_on']['login'])) {
return $success;
}

include_once(CRYPTO_PATH . 'securimage/securimage.php');
$securimage = new Securimage();

$captcha_ok = !empty($_POST['captcha_code']) && $securimage->check($_POST['captcha_code']);

if (!$captcha_ok) {
$page['errors'][] = l10n('Invalid Captcha');
if (isset($_SESSION)) {
unset($_SESSION['pwg_uid'], $_SESSION['pwg_username'], $_SESSION['pwg_groups'], $_SESSION['connected_with']);
}
if (!empty($_COOKIE[session_name()])) {
setcookie(session_name(), '', time() - 3600, '/');
}
return false;
}

return $success;
}