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07ec659385
This project lived only on the server without version control. This is now the starting point for the repository.
124 lines
3.6 KiB
PHP
124 lines
3.6 KiB
PHP
<?php
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/*
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Question2Answer by Gideon Greenspan and contributors
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http://www.question2answer.org/
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Description: Wrapper functions and utilities for captcha modules
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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More about this license: http://www.question2answer.org/license.php
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*/
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if (!defined('QA_VERSION')) { // don't allow this page to be requested directly from browser
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header('Location: ../../');
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exit;
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}
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/**
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* Return whether a captcha module has been selected and it indicates that it is fully set up to go.
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*/
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function qa_captcha_available()
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{
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$module = qa_load_module('captcha', qa_opt('captcha_module'));
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return isset($module) && (!method_exists($module, 'allow_captcha') || $module->allow_captcha());
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}
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/**
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* Return an HTML string explaining $captchareason (from qa_user_captcha_reason()) to the user about why they are seeing a captcha
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* @param $captchareason
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* @return mixed|null|string
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*/
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function qa_captcha_reason_note($captchareason)
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{
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$notehtml = null;
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switch ($captchareason) {
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case 'login':
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$notehtml = qa_insert_login_links(qa_lang_html('misc/captcha_login_fix'));
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break;
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case 'confirm':
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$notehtml = qa_insert_login_links(qa_lang_html('misc/captcha_confirm_fix'));
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break;
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case 'approve':
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$notehtml = qa_lang_html('misc/captcha_approve_fix');
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break;
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}
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return $notehtml;
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}
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/**
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* Prepare $qa_content for showing a captcha, adding the element to $fields, given previous $errors, and a $note to display.
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* Returns JavaScript required to load CAPTCHA when field is shown by user (e.g. clicking comment button).
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* @param $qa_content
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* @param $fields
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* @param $errors
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* @param $note
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* @return string
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*/
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function qa_set_up_captcha_field(&$qa_content, &$fields, $errors, $note = null)
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{
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if (!qa_captcha_available())
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return '';
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$captcha = qa_load_module('captcha', qa_opt('captcha_module'));
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// workaround for reCAPTCHA, to load multiple instances via JS
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$count = @++$qa_content['qa_captcha_count'];
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if ($count > 1) {
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// use blank captcha in order to load via JS
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$html = '';
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} else {
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// first captcha is always loaded explicitly
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$qa_content['script_var']['qa_captcha_in'] = 'qa_captcha_div_1';
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$html = $captcha->form_html($qa_content, @$errors['captcha']);
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}
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$fields['captcha'] = array(
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'type' => 'custom',
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'label' => qa_lang_html('misc/captcha_label'),
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'html' => '<div id="qa_captcha_div_' . $count . '">' . $html . '</div>',
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'error' => @array_key_exists('captcha', $errors) ? qa_lang_html('misc/captcha_error') : null,
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'note' => $note,
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);
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return "if (!document.getElementById('qa_captcha_div_" . $count . "').hasChildNodes()) { recaptcha_load('qa_captcha_div_" . $count . "'); }";
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}
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/**
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* Check if captcha is submitted correctly, and if not, set $errors['captcha'] to a descriptive string.
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* @param $errors
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* @return bool
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*/
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function qa_captcha_validate_post(&$errors)
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{
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if (qa_captcha_available()) {
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$captcha = qa_load_module('captcha', qa_opt('captcha_module'));
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if (!$captcha->validate_post($error)) {
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$errors['captcha'] = $error;
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return false;
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}
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}
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return true;
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}
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