<?php

/**
 * @Project NUKEVIET 4.x
 * @Author VINADES.,JSC <contact@vinades.vn>
 * @Copyright (C) 2014 VINADES.,JSC. All rights reserved
 * @License GNU/GPL version 2 or any later version
 * @Createdate 12/31/2009 2:13
 */

if (!defined('NV_ADMIN') or !defined('NV_MAINFILE')) {
    die('Stop!!!');
}

/**
 * nv_groups_list()
 *
 * @return
 */
function nv_groups_list($mod_data = 'users')
{
    global $nv_Cache;
    $cache_file = NV_LANG_DATA . '_groups_list_' . NV_CACHE_PREFIX . '.cache';
    if (($cache = $nv_Cache->getItem($mod_data, $cache_file)) != false) {
        return unserialize($cache);
    } else {
        global $db, $db_config, $global_config, $lang_global;

        $groups = array();
        $_mod_table = ($mod_data == 'users') ? NV_USERS_GLOBALTABLE : $db_config['prefix'] . '_' . $mod_data;
        $result = $db->query('SELECT group_id, title, idsite FROM ' . $_mod_table . '_groups WHERE (idsite = ' . $global_config['idsite'] . ' OR (idsite =0 AND siteus = 1)) ORDER BY idsite, weight');
        while ($row = $result->fetch()) {
            if ($row['group_id'] < 9) {
                $row['title'] = $lang_global['level' . $row['group_id']];
            }
            $groups[$row['group_id']] = ($global_config['idsite'] > 0 and empty($row['idsite'])) ? '<strong>' . $row['title'] . '</strong>' : $row['title'];
        }
        $nv_Cache->setItem($mod_data, $cache_file, serialize($groups));

        return $groups;
    }
}

/**
 * nv_groups_post()
 *
 * @param mixed $groups_view
 * @return
 */
function nv_groups_post($groups_view)
{
    if (in_array(6, $groups_view)) {
        return array( 6 );
    }
    if (in_array(4, $groups_view)) {
        return array_intersect($groups_view, array( 4, 5, 7 ));
    }
    if (in_array(3, $groups_view)) {
        return array_diff($groups_view, array( 1, 2 ));
    }
    if (in_array(2, $groups_view)) {
        return array_diff($groups_view, array( 1 ));
    }
    if (empty($groups_view)) {
        return array( 1 );
    }
    return array_map('intval', $groups_view);
}

/**
 * nv_var_export()
 *
 * @param mixed $var_array
 * @return
 */
function nv_var_export($var_array)
{
    $ct = preg_replace('/[\s\t\r\n]+/', ' ', var_export($var_array, true));
    $ct = str_replace("', ), '", "'), '", $ct);
    $ct = str_replace('array ( ', 'array(', $ct);
    $ct = str_replace(' => ', '=>', $ct);
    $ct = str_replace('\', ), ), )', '\')))', $ct);
    $ct = str_replace('\', ), )', '\'))', $ct);
    $ct = preg_replace("/\'\, \)+$/", "')", $ct);
    return $ct;
}

/**
 * nv_save_file_config_global()
 *
 * @return
 */
function nv_save_file_config_global()
{
    global $nv_Cache, $db, $sys_info, $global_config, $db_config;

    if ($global_config['idsite']) {
        return false;
    }

    $content_config = "<?php" . "\n\n";
    $content_config .= NV_FILEHEAD . "\n\n";
    $content_config .= "if (!defined('NV_MAINFILE'))\n    die('Stop!!!');\n\n";

    $config_variable = array();
    $allowed_html_tags = '';
    $sql = "SELECT module, config_name, config_value FROM " . NV_CONFIG_GLOBALTABLE . " WHERE lang='sys' AND (module='global' OR module='define') ORDER BY config_name ASC";
    $result = $db->query($sql);

    while (list($c_module, $c_config_name, $c_config_value) = $result->fetch(3)) {
        if ($c_module == 'define') {
            if (preg_match('/^\d+$/', $c_config_value)) {
                $content_config .= "define('" . strtoupper($c_config_name) . "', " . $c_config_value . ");\n";
            } else {
                $content_config .= "define('" . strtoupper($c_config_name) . "', '" . $c_config_value . "');\n";
            }
            if ($c_config_name == 'nv_allowed_html_tags') {
                $allowed_html_tags = $c_config_value;
            }
        } else {
            $config_variable[$c_config_name] = $c_config_value;
        }
    }

    $nv_eol = strtoupper(substr(PHP_OS, 0, 3) == 'WIN') ? '"\r\n"' : (strtoupper(substr(PHP_OS, 0, 3) == 'MAC') ? '"\r"' : '"\n"');
    $upload_max_filesize = min(nv_converttoBytes(ini_get('upload_max_filesize')), nv_converttoBytes(ini_get('post_max_size')), $config_variable['nv_max_size']);

    $content_config .= "define('NV_EOL', " . $nv_eol . ");\n";
    $content_config .= "define('NV_UPLOAD_MAX_FILESIZE', " . floatval($upload_max_filesize) . ");\n";

    $my_domains = array_map('trim', explode(',', $config_variable['my_domains']));
    $my_domains[] = NV_SERVER_NAME;
    $config_variable['my_domains'] = implode(',', array_unique($my_domains));

    $config_variable['check_rewrite_file'] = nv_check_rewrite_file();
    $config_variable['allow_request_mods'] = NV_ALLOW_REQUEST_MODS != '' ? NV_ALLOW_REQUEST_MODS : "request";
    $config_variable['request_default_mode'] = NV_REQUEST_DEFAULT_MODE != '' ? trim(NV_REQUEST_DEFAULT_MODE) : 'request';

    $config_variable['log_errors_list'] = NV_LOG_ERRORS_LIST;
    $config_variable['display_errors_list'] = NV_DISPLAY_ERRORS_LIST;
    $config_variable['send_errors_list'] = NV_SEND_ERRORS_LIST;
    $config_variable['error_log_path'] = NV_LOGS_DIR . '/error_logs';
    $config_variable['error_log_filename'] = NV_ERRORLOGS_FILENAME;
    $config_variable['error_log_fileext'] = NV_LOGS_EXT;
    $config_variable['error_send_email'] = $config_variable['error_send_email'];

    $config_name_array = ['file_allowed_ext', 'forbid_extensions', 'forbid_mimes', 'allow_sitelangs', 'allow_request_mods', 'config_sso'];

    foreach ($config_variable as $c_config_name => $c_config_value) {
        if (in_array($c_config_name, $config_name_array)) {
            if (!empty($c_config_value)) {
                $c_config_value = "'" . implode("','", array_map('trim', explode(',', $c_config_value))) . "'";
            } else {
                $c_config_value = '';
            }
            $content_config .= "\$global_config['" . $c_config_name . "']=array(" . $c_config_value . ");\n";
        } else {
            if (preg_match('/^(0|[1-9][0-9]*)$/', $c_config_value) and $c_config_name != 'facebook_client_id') {
                $content_config .= "\$global_config['" . $c_config_name . "']=" . $c_config_value . ";\n";
            } else {
                $c_config_value = nv_unhtmlspecialchars($c_config_value);
                if (!preg_match("/^[a-z0-9\-\_\.\,\;\:\@\/\\s]+$/i", $c_config_value) and $c_config_name != 'my_domains') {
                    $c_config_value = nv_htmlspecialchars($c_config_value);
                }
                $content_config .= "\$global_config['" . $c_config_name . "']='" . $c_config_value . "';\n";
            }
        }
    }

    // Các ngôn ngữ data đã thiết lập
    $sql = 'SELECT lang FROM ' . $db_config['prefix'] . '_setup_language WHERE setup=1 ORDER BY weight ASC';
    $result = $db->query($sql);

    $c_config_value = array();
    while ($row = $result->fetch()) {
        $c_config_value[] = $row['lang'];
    }
    $content_config .= "\$global_config['setup_langs']=array('" . implode("','", $c_config_value) . "');\n";

    //allowed_html_tags
    if (!empty($allowed_html_tags)) {
        $allowed_html_tags = "'" . implode("','", array_map('trim', explode(',', $allowed_html_tags))) . "'";
    } else {
        $allowed_html_tags = '';
    }
    $content_config .= "\$global_config['allowed_html_tags']=array(" . $allowed_html_tags . ");\n";

    //Xac dinh cac search_engine
    $engine_allowed = (file_exists(NV_ROOTDIR . '/' . NV_DATADIR . '/search_engine.xml')) ? nv_object2array(simplexml_load_file(NV_ROOTDIR . '/' . NV_DATADIR . '/search_engine.xml')) : array();
    $content_config .= "\$global_config['engine_allowed']=" . nv_var_export($engine_allowed) . ";\n";
    $content_config .= "\n";

    $language_array = nv_parse_ini_file(NV_ROOTDIR . '/includes/ini/langs.ini', true);
    $tmp_array = array();
    $lang_array_exit = nv_scandir(NV_ROOTDIR . '/includes/language', "/^[a-z]{2}+$/");
    foreach ($lang_array_exit as $lang) {
        $tmp_array[$lang] = $language_array[$lang];
    }
    unset($language_array);
    $content_config .= "\$language_array=" . nv_var_export($tmp_array) . ";\n";

    $tmp_array = nv_parse_ini_file(NV_ROOTDIR . '/includes/ini/timezone.ini', true);
    $content_config .= "\$nv_parse_ini_timezone=" . nv_var_export($tmp_array) . ";\n";

    $global_config['rewrite_optional'] = $config_variable['rewrite_optional'];
    $global_config['rewrite_op_mod'] = $config_variable['rewrite_op_mod'];

    $global_config['rewrite_endurl'] = $config_variable['rewrite_endurl'];
    $global_config['rewrite_exturl'] = $config_variable['rewrite_exturl'];

    $content_config .= "\n";

    $nv_plugin_area = array();
    $_sql = 'SELECT * FROM ' . $db_config['prefix'] . '_plugin ORDER BY plugin_area ASC, weight ASC';
    $_query = $db->query($_sql);
    while ($row = $_query->fetch()) {
        $nv_plugin_area[$row['plugin_area']][] = $row['plugin_file'];
    }
    $content_config .= "\$nv_plugin_area=" . nv_var_export($nv_plugin_area) . ";\n\n";

    $return = file_put_contents(NV_ROOTDIR . "/" . NV_DATADIR . "/config_global.php", trim($content_config), LOCK_EX);
    $nv_Cache->delAll();

    //Resets the contents of the opcode cache
    if (function_exists('opcache_reset')) {
        opcache_reset();
    }
    return $return;
}

/**
 * nv_geVersion()
 *
 * @param integer $updatetime
 * @return
 */
function nv_geVersion($updatetime = 3600)
{
    global $global_config, $lang_global;

    $my_file = NV_ROOTDIR . '/' . NV_CACHEDIR . '/nukeviet.version.' . NV_LANG_INTERFACE . '.xml';

    $xmlcontent = false;

    $p = NV_CURRENTTIME - $updatetime;

    if (file_exists($my_file) and @filemtime($my_file) > $p) {
        $xmlcontent = simplexml_load_file($my_file);
    } else {
        $NV_Http = new NukeViet\Http\Http($global_config, NV_TEMP_DIR);

        $args = array(
            'headers' => array(
                'Referer' => NV_MY_DOMAIN,
            ),
            'body' => array(
                'lang' > NV_LANG_INTERFACE,
                'basever' => $global_config['version'],
                'mode' => 'getsysver'
            )
        );

        $array = $NV_Http->post(NUKEVIET_STORE_APIURL, $args);
        $array = !empty($array['body']) ? @unserialize($array['body']) : array();

        $error = '';
        if (!empty(NukeViet\Http\Http::$error)) {
            $error = nv_http_get_lang(NukeViet\Http\Http::$error);
        } elseif (!isset($array['error']) or !isset($array['data']) or !isset($array['pagination']) or !is_array($array['error']) or !is_array($array['data']) or !is_array($array['pagination']) or (!empty($array['error']) and (!isset($array['error']['level']) or empty($array['error']['message'])))) {
            $error = $lang_global['error_valid_response'];
        } elseif (!empty($array['error']['message'])) {
            $error = $array['error']['message'];
        }

        if (!empty($error)) {
            return $error;
        }

        $array = $array['data'];

        $content = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<cms>\n\t<name><![CDATA[" . $array['name'] . "]]></name>\n\t<version><![CDATA[" . $array['version'] . "]]></version>\n\t<date><![CDATA[" . $array['date'] . "]]></date>\n\t<message><![CDATA[" . $array['message'] . "]]></message>\n\t<link><![CDATA[" . $array['link'] . "]]></link>\n\t<updateable><![CDATA[" . $array['updateable'] . "]]></updateable>\n\t<updatepackage><![CDATA[" . $array['updatepackage'] . "]]></updatepackage>\n</cms>";

        $xmlcontent = simplexml_load_string($content);

        if ($xmlcontent !== false) {
            file_put_contents($my_file, $content);
        }
    }

    return $xmlcontent;
}

/**
 * nv_version_compare()
 *
 * @param mixed $version1
 * @param mixed $version2
 * @return
 */
function nv_version_compare($version1, $version2)
{
    $v1 = explode('.', $version1);
    $v2 = explode('.', $version2);

    if ($v1[0] > $v2[0]) {
        return 1;
    }

    if ($v1[0] < $v2[0]) {
        return - 1;
    }

    if ($v1[1] > $v2[1]) {
        return 1;
    }

    if ($v1[1] < $v2[1]) {
        return - 1;
    }

    if ($v1[2] > $v2[2]) {
        return 1;
    }

    if ($v1[2] < $v2[2]) {
        return - 1;
    }

    return 0;
}

/**
 * nv_check_rewrite_file()
 *
 * @return
 */
function nv_check_rewrite_file()
{
    global $sys_info;
    if ($sys_info['supports_rewrite'] == 'nginx') {
        return true;
    }
    elseif ($sys_info['supports_rewrite'] == 'rewrite_mode_apache') {
        if (!file_exists(NV_ROOTDIR . '/.htaccess')) {
            return false;
        }

        $htaccess = @file_get_contents(NV_ROOTDIR . '/.htaccess');

        return (preg_match('/\#nukeviet\_rewrite\_start(.*)\#nukeviet\_rewrite\_end/s', $htaccess));
    }
    elseif ($sys_info['supports_rewrite'] == 'rewrite_mode_iis') {
        if (!file_exists(NV_ROOTDIR . '/web.config')) {
            return false;
        }

        $web_config = @file_get_contents(NV_ROOTDIR . '/web.config');

        return (preg_match('/<rule name="nv_rule_rewrite">(.*)<\/rule>/s', $web_config));
    }

    return false;
}

/**
 * nv_rewrite_change()
 *
 * @param mixed $rewrite_optional
 * @return
 */
function nv_rewrite_change($array_config_global)
{
    global $sys_info;
    $rewrite_rule = $filename = '';
    $endurl = ($array_config_global['rewrite_endurl'] == $array_config_global['rewrite_exturl']) ? nv_preg_quote($array_config_global['rewrite_endurl']) : nv_preg_quote($array_config_global['rewrite_endurl']) . '|' . nv_preg_quote($array_config_global['rewrite_exturl']);

    if ($sys_info['supports_rewrite'] == 'nginx') {
        return array(true, true);
    }
    elseif ($sys_info['supports_rewrite'] == 'rewrite_mode_iis') {
        $filename = NV_ROOTDIR . '/web.config';
        $rulename = 0;
        $rewrite_rule .= "\n";
        $rewrite_rule .= " <rule name=\"nv_rule_" . ++$rulename . "\">\n";
        $rewrite_rule .= " <match url=\"^\" ignoreCase=\"false\" />\n";
        $rewrite_rule .= " <conditions>\n";
        $rewrite_rule .= " 		<add input=\"{REQUEST_FILENAME}\" pattern=\"/robots.txt$\" />\n";
        $rewrite_rule .= " </conditions>\n";
        $rewrite_rule .= " <action type=\"Rewrite\" url=\"robots.php?action={HTTP_HOST}\" appendQueryString=\"false\" />\n";
        $rewrite_rule .= " </rule>\n";

        $rewrite_rule .= " <rule name=\"nv_rule_" . ++$rulename . "\">\n";
        $rewrite_rule .= " \t<match url=\"^(.*?)sitemap\.xml$\" ignoreCase=\"false\" />\n";
        $rewrite_rule .= " \t<action type=\"Rewrite\" url=\"index.php?" . NV_NAME_VARIABLE . "=SitemapIndex\" appendQueryString=\"false\" />\n";
        $rewrite_rule .= " </rule>\n";

        $rewrite_rule .= " <rule name=\"nv_rule_" . ++$rulename . "\">\n";
        $rewrite_rule .= " \t<match url=\"^(.*?)sitemap\-([a-z]{2})\.xml$\" ignoreCase=\"false\" />\n";
        $rewrite_rule .= " \t<action type=\"Rewrite\" url=\"index.php?" . NV_LANG_VARIABLE . "={R:2}&amp;" . NV_NAME_VARIABLE . "=SitemapIndex\" appendQueryString=\"false\" />\n";
        $rewrite_rule .= " </rule>\n";

        $rewrite_rule .= " <rule name=\"nv_rule_" . ++$rulename . "\">\n";
        $rewrite_rule .= " \t<match url=\"^(.*?)sitemap\-([a-z]{2})\.([a-zA-Z0-9-]+)\.xml$\" ignoreCase=\"false\" />\n";
        $rewrite_rule .= " \t<action type=\"Rewrite\" url=\"index.php?" . NV_LANG_VARIABLE . "={R:2}&amp;" . NV_NAME_VARIABLE . "={R:3}&amp;" . NV_OP_VARIABLE . "=sitemap\" appendQueryString=\"false\" />\n";
        $rewrite_rule .= " </rule>\n";

        $rewrite_rule .= " <rule name=\"nv_rule_" . ++$rulename . "\">\n";
        $rewrite_rule .= " \t<match url=\"^(.*?)sitemap\-([a-z]{2})\.([a-zA-Z0-9-]+)\.([a-zA-Z0-9-]+)\.xml$\" ignoreCase=\"false\" />\n";
        $rewrite_rule .= " \t<action type=\"Rewrite\" url=\"index.php?" . NV_LANG_VARIABLE . "={R:2}&amp;" . NV_NAME_VARIABLE . "={R:3}&amp;" . NV_OP_VARIABLE . "=sitemap/{R:4}\" appendQueryString=\"false\" />\n";
        $rewrite_rule .= " </rule>\n";

        $rewrite_rule .= " <rule name=\"nv_rule_rewrite\">\n";
        $rewrite_rule .= " 	<match url=\"(.*)(" . $endurl . ")$\" ignoreCase=\"false\" />\n";
        $rewrite_rule .= " 	<conditions logicalGrouping=\"MatchAll\">\n";
        $rewrite_rule .= " 		<add input=\"{REQUEST_FILENAME}\" matchType=\"IsFile\" ignoreCase=\"false\" negate=\"true\" />\n";
        $rewrite_rule .= " 		<add input=\"{REQUEST_FILENAME}\" matchType=\"IsDirectory\" ignoreCase=\"false\" negate=\"true\" />\n";
        $rewrite_rule .= " 	</conditions>\n";
        $rewrite_rule .= " 	<action type=\"Rewrite\" url=\"index.php\" />\n";
        $rewrite_rule .= " </rule>\n";

        $rewrite_rule .= " <rule name=\"nv_rule_rewrite_tag\">\n";
        $rewrite_rule .= " 	<match url=\"(.*)tag\/([^?]+)$\" ignoreCase=\"false\" />\n";
        $rewrite_rule .= " 	<action type=\"Rewrite\" url=\"index.php\" />\n";
        $rewrite_rule .= " </rule>\n";

        $rewrite_rule .= " <rule name=\"nv_rule_" . ++ $rulename . "\" stopProcessing=\"true\">\n";
        $rewrite_rule .= " \t<match url=\"^([a-zA-Z0-9-\/]+)\/([a-zA-Z0-9-]+)$\" ignoreCase=\"false\" />\n";
        $rewrite_rule .= " \t<action type=\"Redirect\" redirectType=\"Permanent\" url=\"" . NV_BASE_SITEURL . "{R:1}/{R:2}/\" />\n";
        $rewrite_rule .= " </rule>\n";

        $rewrite_rule .= " <rule name=\"nv_rule_" . ++ $rulename . "\" stopProcessing=\"true\">\n";
        $rewrite_rule .= " \t<match url=\"^([a-zA-Z0-9-]+)$\" ignoreCase=\"false\" />\n";
        $rewrite_rule .= " \t<action type=\"Redirect\" redirectType=\"Permanent\" url=\"" . NV_BASE_SITEURL . "{R:1}/\" />\n";
        $rewrite_rule .= " </rule>\n";

        $rewrite_rule = nv_rewrite_rule_iis7($rewrite_rule);
    } elseif ($sys_info['supports_rewrite'] == 'rewrite_mode_apache') {
        $filename = NV_ROOTDIR . '/.htaccess';
        $htaccess = '';

        $rewrite_rule = "##################################################################################\n";
        $rewrite_rule .= "#nukeviet_rewrite_start //Please do not change the contents of the following lines\n";
        $rewrite_rule .= "##################################################################################\n\n";
        $rewrite_rule .= "#Options +FollowSymLinks\n\n";
        $rewrite_rule .= "<IfModule mod_rewrite.c>\n";
        $rewrite_rule .= "RewriteEngine On\n";
        $rewrite_rule .= "#RewriteBase " . NV_BASE_SITEURL . "\n";

        $rewrite_rule .= "RewriteCond %{REQUEST_FILENAME} /robots.txt$ [NC]\n";
        $rewrite_rule .= "RewriteRule ^ robots.php?action=%{HTTP_HOST} [L]\n";
        $rewrite_rule .= "RewriteRule ^(.*?)sitemap\.xml$ index.php?" . NV_NAME_VARIABLE . "=SitemapIndex [L]\n";
        $rewrite_rule .= "RewriteRule ^(.*?)sitemap\-([a-z]{2})\.xml$ index.php?" . NV_LANG_VARIABLE . "=$2&" . NV_NAME_VARIABLE . "=SitemapIndex [L]\n";
        $rewrite_rule .= "RewriteRule ^(.*?)sitemap\-([a-z]{2})\.([a-zA-Z0-9-]+)\.xml$ index.php?" . NV_LANG_VARIABLE . "=$2&" . NV_NAME_VARIABLE . "=$3&" . NV_OP_VARIABLE . "=sitemap [L]\n";
        $rewrite_rule .= "RewriteRule ^(.*?)sitemap\-([a-z]{2})\.([a-zA-Z0-9-]+)\.([a-zA-Z0-9-]+)\.xml$ index.php?" . NV_LANG_VARIABLE . "=$2&" . NV_NAME_VARIABLE . "=$3&" . NV_OP_VARIABLE . "=sitemap/$4 [L]\n";

        // Rewrite for other module's rule
        $rewrite_rule .= "RewriteCond %{REQUEST_FILENAME} !-f\n";
        $rewrite_rule .= "RewriteCond %{REQUEST_FILENAME} !-d\n";
        $rewrite_rule .= "RewriteRule (.*)(" . $endurl . ")\$ index.php\n";
        $rewrite_rule .= "RewriteRule (.*)tag\/([^?]+)$ index.php\n";

        $rewrite_rule .= "RewriteRule ^([a-zA-Z0-9-\/]+)\/([a-zA-Z0-9-]+)$ " . NV_BASE_SITEURL . "$1/$2/ [L,R=301]\n";
        $rewrite_rule .= "RewriteRule ^([a-zA-Z0-9-]+)$ " . NV_BASE_SITEURL . "$1/ [L,R=301]\n";
        $rewrite_rule .= "</IfModule>\n\n";
        $rewrite_rule .= "#nukeviet_rewrite_end\n";
        $rewrite_rule .= "##################################################################################\n\n";

        if (file_exists($filename)) {
            $htaccess = @file_get_contents($filename);
            if (!empty($htaccess)) {
                $htaccess = preg_replace("/[\n\s]*[\#]+[\n\s]+\#nukeviet\_rewrite\_start(.*)\#nukeviet\_rewrite\_end[\n\s]+[\#]+[\n\s]*/s", "\n", $htaccess);
                $htaccess = trim($htaccess);
            }
        }
        $htaccess .= "\n\n" . $rewrite_rule;
        $rewrite_rule = $htaccess;
    }
    $return = true;
    if (!empty($filename) and !empty($rewrite_rule)) {
        try {
            $filesize = file_put_contents($filename, trim($rewrite_rule) . "\n", LOCK_EX);
            if (empty($filesize)) {
                $return = false;
            }
        } catch (exception $e) {
            $return = false;
        }
    }
    return array($return, NV_BASE_SITEURL . basename($filename));
}

/**
 * nv_server_config_change()
 *
 * @param mixed $array_config
 * @return
 */
function nv_server_config_change($array_config)
{
    global $sys_info;

    $config_contents = $filename = '';

    if ($sys_info['supports_rewrite'] == 'rewrite_mode_apache') {
        $filename = NV_ROOTDIR . '/.htaccess';

        $config_contents .= "##################################################################################\n";
        $config_contents .= "#nukeviet_config_start //Please do not change the contents of the following lines\n";
        $config_contents .= "##################################################################################\n\n";
        $config_contents .= "RedirectMatch 404 ^.*\/(config|mainfile)\.php(.*)$\n\n";
        $config_contents .= "ErrorDocument 400 /error.php?code=400\n";
        $config_contents .= "ErrorDocument 403 /error.php?code=403\n";
        $config_contents .= "ErrorDocument 404 /error.php?code=404\n";
        $config_contents .= "ErrorDocument 405 /error.php?code=405\n";
        $config_contents .= "ErrorDocument 408 /error.php?code=408\n";
        $config_contents .= "ErrorDocument 500 /error.php?code=500\n";
        $config_contents .= "ErrorDocument 502 /error.php?code=502\n";
        $config_contents .= "ErrorDocument 503 /error.php?code=503\n";
        $config_contents .= "ErrorDocument 504 /error.php?code=504\n\n";
        $config_contents .= "<IfModule mod_deflate.c>\n";
        $config_contents .= "  <FilesMatch \"\.(css|js|xml|ttf)$\">\n";
        $config_contents .= "    SetOutputFilter DEFLATE\n";
        $config_contents .= "  </FilesMatch>\n";
        $config_contents .= "</IfModule>\n\n";
        $config_contents .= "<IfModule mod_headers.c>\n";
        $config_contents .= "  <FilesMatch \"\.(js|css|xml|ttf)$\">\n";
        $config_contents .= "    Header append Vary Accept-Encoding\n";
        $config_contents .= "    Header set Access-Control-Allow-Origin \"*\"\n";
        if (!empty($array_config['nv_anti_iframe'])) {
            $config_contents .= "    Header set X-Frame-Options \"SAMEORIGIN\"\n";
        }
        $config_contents .= "    Header set X-Content-Type-Options \"nosniff\"\n";
        $config_contents .= "    Header set X-XSS-Protection \"1; mode=block\"\n";
        $config_contents .= "  </FilesMatch>\n\n";
        $config_contents .= "  <FilesMatch \"\.(doc|pdf|swf)$\">\n";
        $config_contents .= "    Header set X-Robots-Tag \"noarchive, nosnippet\"\n";
        $config_contents .= "  </FilesMatch>\n\n";
        $config_contents .= "  <FilesMatch \"\.(js|css|jpe?g|png|gif|swf|svg|ico|woff|ttf|xsl|pdf|flv|mp3|mp4)(\?[0-9]{9,11})?$\">\n";
        $config_contents .= "	Header set Cache-Control \"max-age=2592000, public\"\n";
        $config_contents .= "  </FilesMatch>\n";
        $config_contents .= "</IfModule>\n\n";
        $config_contents .= "#nukeviet_config_end\n";
        $config_contents .= "##################################################################################\n";

        $htaccess = '';
        $config_rule_exists = false;

        if (file_exists($filename)) {
            $htaccess = @file_get_contents($filename);
            if (!empty($htaccess)) {
                $partten = "/[\n\s]*[\#]+[\n\s]+\#nukeviet\_config\_start(.*)\#nukeviet\_config\_end[\n\s]+[\#]+[\n\s]*/s";
                if (preg_match($partten, $htaccess)) {
                    $htaccess = preg_replace($partten, "\n\n" . $config_contents . "\n", $htaccess);
                    $config_rule_exists = true;
                }
                $htaccess = trim($htaccess);
            }
        }

        if (!$config_rule_exists) {
            $htaccess .= "\n\n" . $config_contents;
        }

        $config_contents = $htaccess;
    }

    $return = true;
    if (!empty($filename) and !empty($config_contents)) {
        try {
            $filesize = file_put_contents($filename, $config_contents . "\n", LOCK_EX);
            if (empty($filesize)) {
                $return = false;
            }
        } catch (exception $e) {
            $return = false;
        }
    }
    return array($return, basename($filename));
}

/**
 * nv_rewrite_rule_iis7()
 *
 * @param mixed $rewrite_rule
 * @return
 */
function nv_rewrite_rule_iis7($rewrite_rule = '')
{
    $filename = NV_ROOTDIR . '/web.config';
    if (!class_exists('DOMDocument')) {
        return false;
    }

    // If configuration file does not exist then we create one.
    if (!file_exists($filename)) {
        $fp = fopen($filename, 'w');
        fwrite($fp, '<configuration/>');
        fclose($fp);
    }

    $doc = new DOMDocument();
    $doc->preserveWhiteSpace = false;

    if ($doc->load($filename) === false) {
        return false;
    }

    $xpath = new DOMXPath($doc);

    // Check the XPath to the rewrite rule and create XML nodes if they do not exist
    $xmlnodes = $xpath->query('/configuration/system.webServer/rewrite/rules');
    if ($xmlnodes->length > 0) {
        $child = $xmlnodes->item(0);
        $parent = $child->parentNode;
        $parent->removeChild($child);
    }
    if (!empty($rewrite_rule)) {
        $rules_node = $doc->createElement('rules');

        $xmlnodes = $xpath->query('/configuration/system.webServer/rewrite');
        if ($xmlnodes->length > 0) {
            $rewrite_node = $xmlnodes->item(0);
            $rewrite_node->appendChild($rules_node);
        } else {
            $rewrite_node = $doc->createElement('rewrite');
            $rewrite_node->appendChild($rules_node);

            $xmlnodes = $xpath->query('/configuration/system.webServer');
            if ($xmlnodes->length > 0) {
                $system_webServer_node = $xmlnodes->item(0);
                $system_webServer_node->appendChild($rewrite_node);
            } else {
                $system_webServer_node = $doc->createElement('system.webServer');
                $system_webServer_node->appendChild($rewrite_node);

                $xmlnodes = $xpath->query('/configuration');
                if ($xmlnodes->length > 0) {
                    $config_node = $xmlnodes->item(0);
                    $config_node->appendChild($system_webServer_node);
                } else {
                    $config_node = $doc->createElement('configuration');
                    $doc->appendChild($config_node);
                    $config_node->appendChild($system_webServer_node);
                }
            }
        }
        $rule_fragment = $doc->createDocumentFragment();
        $rule_fragment->appendXML($rewrite_rule);
        $rules_node->appendChild($rule_fragment);
    }
    $doc->formatOutput = true;
    return $doc->saveXML();
}

/**
 * nv_getExtVersion()
 *
 * @param integer $updatetime
 * @return
 */
function nv_getExtVersion($updatetime = 3600)
{
    global $global_config, $lang_global, $db, $db_config;

    $my_file = NV_ROOTDIR . '/' . NV_CACHEDIR . '/extensions.version.' . NV_LANG_INTERFACE . '.xml';

    $xmlcontent = false;

    $p = NV_CURRENTTIME - $updatetime;

    if (file_exists($my_file) and @filemtime($my_file) > $p) {
        $xmlcontent = simplexml_load_file($my_file);
    } else {
        $sql = 'SELECT * FROM ' . $db_config['prefix'] . '_setup_extensions WHERE title=basename ORDER BY title ASC';
        $result = $db->query($sql);

        $array = $array_ext_ids = array();
        while ($row = $result->fetch()) {
            $row['version'] = explode(' ', $row['version']);

            $array[$row['title']] = array(
                'id' => $row['id'],
                'type' => $row['type'],
                'name' => $row['title'],
                'current_version' => trim($row['version'][0]),
                'current_release' => trim($row['version'][1]),
                'remote_version' => '',
                'remote_release' => 0,
                'updateable' => array(), // Thong tin cac phien ban co the update
                'author' => $row['author'],
                'license' => '',
                'mode' => $row['is_sys'] ? 'sys' : 'other',
                'message' => $row['note'],
                'link' => '',
                'support' => '',
                'origin' => false,
            );

            if (!empty($row['id'])) {
                $array_ext_ids[] = $row['id'];
            }
        }

        if (!empty($array_ext_ids)) {
            $NV_Http = new NukeViet\Http\Http($global_config, NV_TEMP_DIR);

            $args = array(
                'headers' => array(
                    'Referer' => NV_MY_DOMAIN,
                ),
                'body' => array(
                    'lang' > NV_LANG_INTERFACE,
                    'basever' => $global_config['version'],
                    'mode' => 'checkextver',
                    'ids' => implode(',', $array_ext_ids),
                )
            );

            $apidata = $NV_Http->post(NUKEVIET_STORE_APIURL, $args);
            $apidata = !empty($apidata['body']) ? @unserialize($apidata['body']) : array();

            $error = '';
            if (!empty(NukeViet\Http\Http::$error)) {
                $error = nv_http_get_lang(NukeViet\Http\Http::$error);
            } elseif (!isset($apidata['error']) or !isset($apidata['data']) or !isset($apidata['pagination']) or !is_array($apidata['error']) or !is_array($apidata['data']) or !is_array($apidata['pagination']) or (!empty($apidata['error']) and (!isset($apidata['error']['level']) or empty($apidata['error']['message'])))) {
                $error = $lang_global['error_valid_response'];
            } elseif (!empty($apidata['error']['message'])) {
                $error = $apidata['error']['message'];
            }

            if (!empty($error)) {
                return $error;
            }

            $apidata = $apidata['data'];
        }

        $content = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<cms>\n";

        foreach ($array as $row) {
            if (isset($apidata[$row['id']])) {
                $row['remote_version'] = $apidata[$row['id']]['lastest_version'];
                $row['remote_release'] = $apidata[$row['id']]['lastest_release'];
                $row['updateable'] = $apidata[$row['id']]['updateable'];

                if (empty($row['author'])) {
                    $row['author'] = $apidata[$row['id']]['author'];
                }

                $row['license'] = $apidata[$row['id']]['license'];
                $row['message'] = $apidata[$row['id']]['note'];
                $row['link'] = $apidata[$row['id']]['link'];
                $row['support'] = $apidata[$row['id']]['support'];
                $row['origin'] = true;
            }

            $content .= "\t<extension>\n";
            $content .= "\t\t<id><![CDATA[" . $row['id'] . "]]></id>\n";
            $content .= "\t\t<type><![CDATA[" . $row['type'] . "]]></type>\n";
            $content .= "\t\t<name><![CDATA[" . $row['name'] . "]]></name>\n";
            $content .= "\t\t<version><![CDATA[" . $row['current_version'] . "]]></version>\n";
            $content .= "\t\t<date><![CDATA[" . gmdate("D, d M Y H:i:s", $row['current_release']) . " GMT]]></date>\n";
            $content .= "\t\t<new_version><![CDATA[" . $row['remote_version'] . "]]></new_version>\n";
            $content .= "\t\t<new_date><![CDATA[" . ($row['remote_release'] ? gmdate("D, d M Y H:i:s", $row['current_release']) . " GMT" : "") . "]]></new_date>\n";
            $content .= "\t\t<author><![CDATA[" . $row['author'] . "]]></author>\n";
            $content .= "\t\t<license><![CDATA[" . $row['license'] . "]]></license>\n";
            $content .= "\t\t<mode><![CDATA[" . $row['mode'] . "]]></mode>\n";
            $content .= "\t\t<message><![CDATA[" . $row['message'] . "]]></message>\n";
            $content .= "\t\t<link><![CDATA[" . $row['link'] . "]]></link>\n";
            $content .= "\t\t<support><![CDATA[" . $row['support'] . "]]></support>\n";
            $content .= "\t\t<updateable>\n";

            if (!empty($row['updateable'])) {
                $content .= "\t\t\t<upds>\n";

                foreach ($row['updateable'] as $updateable) {
                    $content .= "\t\t\t\t<upd>\n";
                    $content .= "\t\t\t\t\t<upd_fid><![CDATA[" . $updateable['fid'] . "]]></upd_fid>\n";
                    $content .= "\t\t\t\t\t<upd_old><![CDATA[" . $updateable['old_ver'] . "]]></upd_old>\n";
                    $content .= "\t\t\t\t\t<upd_new><![CDATA[" . $updateable['new_ver'] . "]]></upd_new>\n";
                    $content .= "\t\t\t\t</upd>\n";
                }
                $content .= "\t\t\t</upds>\n";

                unset($updateable);
            }

            $content .= "\t\t</updateable>\n";
            $content .= "\t\t<origin><![CDATA[" . ($row['origin'] === true ? 'true' : 'false') . "]]></origin>\n";
            $content .= "\t</extension>\n";
        }

        $content .= "</cms>";

        $xmlcontent = simplexml_load_string($content);

        if ($xmlcontent !== false) {
            file_put_contents($my_file, $content);
        }
    }

    return $xmlcontent;
}

/**
 * nv_http_get_lang()
 *
 * @param mixed $input
 * @return
 */
function nv_http_get_lang($input)
{
    global $lang_global;

    if (!isset($input['code']) or !isset($input['message'])) {
        return '';
    }

    if (!empty($lang_global['error_code_' . $input['code']])) {
        return $lang_global['error_code_' . $input['code']];
    }

    if (!empty($input['message'])) {
        return $input['message'];
    }

    return 'Error' . ($input['code'] ? ': ' . $input['code'] . '.' : '.');
}

/**
 * nv_save_file_ips()
 *
 * @param integer $type 0 là IP cấm, 1 là IP bỏ qua flood
 * @return
 */
function nv_save_file_ips($type = 0)
{
    global $db, $db_config, $ips;

    $content_config_site = '';
    $content_config_admin = '';

    if ($type == 0) {
        $variable_name = 'banip';
        $file_name = 'banip';
    } elseif ($type == 1) {
        $variable_name = 'except_flood';
        $file_name = 'efloodip';
    } else {
        return true;
    }

    $result = $db->query('SELECT ip, mask, area, begintime, endtime FROM ' . $db_config['prefix'] . '_ips WHERE type=' . $type);
    while (list($dbip, $dbmask, $dbarea, $dbbegintime, $dbendtime) = $result->fetch(3)) {
        $dbendtime = intval($dbendtime);
        $dbarea = intval($dbarea);

        if ($dbendtime == 0 or $dbendtime > NV_CURRENTTIME) {
            if ($ips->isIp6($dbip)) {
                $ip6 = 1;
                $ip_mask = $dbip . '/' . $dbmask;
            } else {
                $ip6 = 0;
                switch ($dbmask) {
                    case 3:
                        $ip_mask = '/\.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}$/';
                        break;
                    case 2:
                        $ip_mask = '/\.[0-9]{1,3}.[0-9]{1,3}$/';
                        break;
                    case 1:
                        $ip_mask = '/\.[0-9]{1,3}$/';
                        break;
                    default:
                        $ip_mask = '//';
                }
            }

            if ($dbarea == 1 or $dbarea == 3) {
                $content_config_site .= "\$array_" . $variable_name . "_site['" . $dbip . "'] = ['ip6' => " . $ip6 . ", 'mask' => \"" . $ip_mask . "\", 'begintime' => " . $dbbegintime . ", 'endtime' => " . $dbendtime . "];\n";
            }

            if ($dbarea == 2 or $dbarea == 3) {
                $content_config_admin .= "\$array_" . $variable_name . "_admin['" . $dbip . "'] = ['ip6' => " . $ip6 . ", 'mask' => \"" . $ip_mask . "\", 'begintime' => " . $dbbegintime . ", 'endtime' => " . $dbendtime . "];\n";
            }
        }
    }

    if (!$content_config_site and !$content_config_admin) {
        nv_deletefile(NV_ROOTDIR . '/' . NV_DATADIR . '/' . $file_name . '.php');
        return true;
    }

    $content_config = "<?php\n\n";
    $content_config .= NV_FILEHEAD . "\n\n";
    $content_config .= "if (!defined('NV_MAINFILE')) {\n    die('Stop!!!');\n}\n\n";
    $content_config .= "\$array_" . $variable_name . "_site = [];\n";
    $content_config .= $content_config_site;
    $content_config .= "\n";
    $content_config .= "\$array_" . $variable_name . "_admin = [];\n";
    $content_config .= $content_config_admin;

    $write = file_put_contents(NV_ROOTDIR . '/' . NV_DATADIR . '/' . $file_name . '.php', $content_config, LOCK_EX);

    if ($write === false) {
        return $content_config;
    }

    return true;
}
