function wpcf7_quiz_ajax_refill($items)
{
    if (!is_array($items)) {
        return $items;
    }
    $fes = wpcf7_scan_shortcode(array('type' => 'quiz'));
    if (empty($fes)) {
        return $items;
    }
    $refill = array();
    foreach ($fes as $fe) {
        $name = $fe['name'];
        $pipes = $fe['pipes'];
        if (empty($name)) {
            continue;
        }
        if (is_a($pipes, 'WPCF7_Pipes') && !$pipes->zero()) {
            $pipe = $pipes->random_pipe();
            $question = $pipe->before;
            $answer = $pipe->after;
        } else {
            // default quiz
            $question = '1+1=?';
            $answer = '2';
        }
        $answer = wpcf7_canonicalize($answer);
        $refill[$name] = array($question, wp_hash($answer, 'wpcf7_quiz'));
    }
    if (!empty($refill)) {
        $items['quiz'] = $refill;
    }
    return $items;
}

function wpcf7_akismet_submitted_params()
{
    $params = array('author' => '', 'author_email' => '', 'author_url' => '');
    $content = '';
    $fes = wpcf7_scan_shortcode();
    foreach ($fes as $fe) {
        if (!isset($fe['name']) || !isset($_POST[$fe['name']])) {
            continue;
        }
        $value = $_POST[$fe['name']];
        if (is_array($value)) {
            $value = implode(', ', wpcf7_array_flatten($value));
        }
        $value = trim($value);
        $options = (array) $fe['options'];
        if (preg_grep('%^akismet:author$%', $options)) {
            $params['author'] = trim($params['author'] . ' ' . $value);
        } elseif (preg_grep('%^akismet:author_email$%', $options)) {
            if ('' == $params['author_email']) {
                $params['author_email'] = $value;
            }
        } elseif (preg_grep('%^akismet:author_url$%', $options)) {
            if ('' == $params['author_url']) {
                $params['author_url'] = $value;
            }
        }
        $content = trim($content . "\n\n" . $value);
    }
    $params = array_filter($params);
    if (!$params) {
        return false;
    }
    $params['content'] = $content;
    return $params;
}

function wpcf7_count_shortcode_handler($tag)
{
    $tag = new WPCF7_Shortcode($tag);
    if (empty($tag->name)) {
        return '';
    }
    $target = wpcf7_scan_shortcode(array('name' => $tag->name));
    $maxlength = $minlength = null;
    if ($target) {
        $target = new WPCF7_Shortcode($target[0]);
        $maxlength = $target->get_maxlength_option();
        $minlength = $target->get_minlength_option();
        if ($maxlength && $minlength && $maxlength < $minlength) {
            $maxlength = $minlength = null;
        }
    }
    if ($tag->has_option('down')) {
        $value = (int) $maxlength;
        $class = 'wpcf7-character-count down';
    } else {
        $value = '0';
        $class = 'wpcf7-character-count up';
    }
    $atts = array();
    $atts['id'] = $tag->get_id_option();
    $atts['class'] = $tag->get_class_option($class);
    $atts['data-target-name'] = $tag->name;
    $atts['data-starting-value'] = $value;
    $atts['data-current-value'] = $value;
    $atts['data-maximum-value'] = $maxlength;
    $atts['data-minimum-value'] = $minlength;
    $atts = wpcf7_format_atts($atts);
    $html = sprintf('<span %1$s>%2$s</span>', $atts, $value);
    return $html;
}

function wpcf7_file_form_enctype_filter($enctype)
{
    $multipart = (bool) wpcf7_scan_shortcode(array('type' => array('file', 'file*')));
    if ($multipart) {
        $enctype = ' enctype="multipart/form-data"';
    }
    return $enctype;
}

function wpcf7_acceptance_filter($accepted)
{
    $fes = wpcf7_scan_shortcode(array('type' => 'acceptance'));
    foreach ($fes as $fe) {
        $name = $fe['name'];
        $options = (array) $fe['options'];
        if (empty($name)) {
            continue;
        }
        $value = $_POST[$name] ? 1 : 0;
        $invert = (bool) preg_grep('%^invert$%', $options);
        if ($invert && $value || !$invert && !$value) {
            $accepted = false;
        }
    }
    return $accepted;
}

 public function invalidate($context, $message)
 {
     if ($context instanceof WPCF7_Shortcode) {
         $tag = $context;
     } elseif (is_array($context)) {
         $tag = new WPCF7_Shortcode($context);
     } elseif (is_string($context)) {
         $tags = wpcf7_scan_shortcode(array('name' => trim($context)));
         $tag = $tags ? new WPCF7_Shortcode($tags[0]) : null;
     }
     $name = !empty($tag) ? $tag->name : null;
     if (empty($name) || !wpcf7_is_name($name)) {
         return;
     }
     if ($this->is_valid($name)) {
         $id = $tag->get_id_option();
         if (empty($id) || !wpcf7_is_name($id)) {
             $id = null;
         }
         $this->invalid_fields[$name] = array('reason' => (string) $message, 'idref' => $id);
     }
 }

function wpcf7_akismet_submitted_params()
{
    $params = array('author' => '', 'author_email' => '', 'author_url' => '', 'content' => '');
    $has_akismet_option = false;
    foreach ((array) $_POST as $key => $val) {
        if ('_wpcf7' == substr($key, 0, 6) || '_wpnonce' == $key) {
            continue;
        }
        if (is_array($val)) {
            $val = implode(', ', wpcf7_array_flatten($val));
        }
        $val = trim($val);
        if (0 == strlen($val)) {
            continue;
        }
        if ($tags = wpcf7_scan_shortcode(array('name' => $key))) {
            $tag = $tags[0];
            $tag = new WPCF7_Shortcode($tag);
            $akismet = $tag->get_option('akismet', '(author|author_email|author_url)', true);
            if ($akismet) {
                $has_akismet_option = true;
                if ('author' == $akismet) {
                    $params[$akismet] = trim($params[$akismet] . ' ' . $val);
                } elseif ('' == $params[$akismet]) {
                    $params[$akismet] = $val;
                }
            }
        }
        $params['content'] .= "\n\n" . $val;
    }
    if (!$has_akismet_option) {
        return false;
    }
    $params['content'] = trim($params['content']);
    return $params;
}

function wpcf7_akismet($spam)
{
    global $akismet_api_host, $akismet_api_port;
    if (!function_exists('akismet_get_key') || !akismet_get_key()) {
        return false;
    }
    $akismet_ready = false;
    $author = $author_email = $author_url = $content = '';
    $fes = wpcf7_scan_shortcode();
    foreach ($fes as $fe) {
        if (!isset($fe['name']) || !is_array($fe['options'])) {
            continue;
        }
        if (preg_grep('%^akismet:author$%', $fe['options'])) {
            $author .= ' ' . $_POST[$fe['name']];
            $author = trim($author);
            $akismet_ready = true;
        }
        if (preg_grep('%^akismet:author_email$%', $fe['options']) && '' == $author_email) {
            $author_email = trim($_POST[$fe['name']]);
            $akismet_ready = true;
        }
        if (preg_grep('%^akismet:author_url$%', $fe['options']) && '' == $author_url) {
            $author_url = trim($_POST[$fe['name']]);
            $akismet_ready = true;
        }
        if ('' != $content) {
            $content .= "\n\n";
        }
        $content .= $_POST[$fe['name']];
    }
    if (!$akismet_ready) {
        return false;
    }
    $c['blog'] = get_option('home');
    $c['blog_lang'] = get_locale();
    $c['blog_charset'] = get_option('blog_charset');
    $c['user_ip'] = preg_replace('/[^0-9., ]/', '', $_SERVER['REMOTE_ADDR']);
    $c['user_agent'] = $_SERVER['HTTP_USER_AGENT'];
    $c['referrer'] = $_SERVER['HTTP_REFERER'];
    $c['comment_type'] = 'contactform7';
    if ($permalink = get_permalink()) {
        $c['permalink'] = $permalink;
    }
    if ('' != $author) {
        $c['comment_author'] = $author;
    }
    if ('' != $author_email) {
        $c['comment_author_email'] = $author_email;
    }
    if ('' != $author_url) {
        $c['comment_author_url'] = $author_url;
    }
    if ('' != $content) {
        $c['comment_content'] = $content;
    }
    $ignore = array('HTTP_COOKIE', 'HTTP_COOKIE2', 'PHP_AUTH_PW');
    foreach ($_SERVER as $key => $value) {
        if (!in_array($key, (array) $ignore)) {
            $c["{$key}"] = $value;
        }
    }
    $query_string = '';
    foreach ($c as $key => $data) {
        $query_string .= $key . '=' . urlencode(stripslashes((string) $data)) . '&';
    }
    $response = akismet_http_post($query_string, $akismet_api_host, '/1.1/comment-check', $akismet_api_port);
    if ('true' == $response[1]) {
        $spam = true;
    }
    return $spam;
}

function wpcf7_captcha_ajax_refill($items)
{
    if (!is_array($items)) {
        return $items;
    }
    $fes = wpcf7_scan_shortcode(array('type' => 'captchac'));
    if (empty($fes)) {
        return $items;
    }
    $refill = array();
    foreach ($fes as $fe) {
        $name = $fe['name'];
        $options = $fe['options'];
        if (empty($name)) {
            continue;
        }
        $op = wpcf7_captchac_options($options);
        if ($filename = wpcf7_generate_captcha($op)) {
            $captcha_url = wpcf7_captcha_url($filename);
            $refill[$name] = $captcha_url;
        }
    }
    if (!empty($refill)) {
        $items['captcha'] = $refill;
    }
    return $items;
}

function wpcf7_checkbox_posted_data($posted_data)
{
    $tags = wpcf7_scan_shortcode(array('type' => array('checkbox', 'checkbox*', 'radio')));
    if (empty($tags)) {
        return $posted_data;
    }
    foreach ($tags as $tag) {
        $tag = new WPCF7_Shortcode($tag);
        if (!isset($posted_data[$tag->name])) {
            continue;
        }
        $posted_items = (array) $posted_data[$tag->name];
        if ($tag->has_option('free_text')) {
            if (WPCF7_USE_PIPE) {
                $values = $tag->pipes->collect_afters();
            } else {
                $values = $tag->values;
            }
            $last = array_pop($values);
            $last = html_entity_decode($last, ENT_QUOTES, 'UTF-8');
            if (in_array($last, $posted_items)) {
                $posted_items = array_diff($posted_items, array($last));
                $free_text_name = sprintf('_wpcf7_%1$s_free_text_%2$s', $tag->basetype, $tag->name);
                $free_text = $posted_data[$free_text_name];
                if (!empty($free_text)) {
                    $posted_items[] = trim($last . ' ' . $free_text);
                } else {
                    $posted_items[] = $last;
                }
            }
        }
        $posted_data[$tag->name] = $posted_items;
    }
    return $posted_data;
}

function cf7bs_captcha_ajax_refill($items)
{
    if (!is_array($items)) {
        return $items;
    }
    $fes = wpcf7_scan_shortcode(array('type' => 'captchar'));
    if (empty($fes)) {
        return $items;
    }
    $refill = array();
    foreach ($fes as $fe) {
        if (cf7bs_captchar_has_captchac($fe)) {
            $fe = cf7bs_captchar_to_captchac($fe);
            $name = $fe['name'];
            $options = $fe['options'];
            if (empty($name)) {
                continue;
            }
            $op = wpcf7_captchac_options($options);
            if ($filename = wpcf7_generate_captcha($op)) {
                $captcha_url = wpcf7_captcha_url($filename);
                $refill[$name] = $captcha_url;
            }
        }
    }
    if (count($refill) > 0) {
        if (!isset($items['captcha'])) {
            $items['captcha'] = $refill;
        } else {
            $items['captcha'] = array_merge($items['captcha'], $refill);
        }
    }
    return $items;
}