<?php

/**
 * 翻译语言
 * @param string $langKey
 * @param boolean $force
 * @return string
 */
function lang($langKey, $force = true)
{
    return isset($GLOBALS['lang'][$langKey]) ? $GLOBALS['lang'][$langKey] : ($force ? $langKey : '');
}

/**
 * 环境检测
 * @param array $envItems 要检测的环境数组
 * @return array 返回检测后处理过的数组
 */
function envCheck($envItems)
{
    $envCheckRes = 1;
    foreach ($envItems as $key => $item) {
        if ($key == 'php') {
            $envItems[$key]['current'] = PHP_VERSION;
        } elseif ($key == 'attachmentupload') {
            $envItems[$key]['current'] = @ini_get('file_uploads') ? ini_get('upload_max_filesize') : 'unknow';
        } elseif ($key == 'gdversion') {
            $tmp = function_exists('gd_info') ? gd_info() : array();
            $envItems[$key]['current'] = empty($tmp['GD Version']) ? 'no' : $tmp['GD Version'];
            unset($tmp);
        } elseif ($key == 'diskspace') {
            if (function_exists('disk_free_space')) {
                $envItems[$key]['current'] = floor(disk_free_space(PATH_ROOT) / (1024 * 1024)) . 'M';
            } else {
                $envItems[$key]['current'] = 'unknow';
            }
        } elseif ($key == 'Zend Guard Loader') {
            if (zendCheck($item)) {
                $envItems[$key]['current'] = 'installed';
            } else {
                $envItems[$key]['current'] = 'uninstalled';
            }
        } elseif (isset($item['c'])) {
            $envItems[$key]['current'] = constant($item['c']);
        }

        $envItems[$key]['status'] = 1;
        $funCheckName = $key . 'Check';
        if ($item['r'] != 'notset' && function_exists($funCheckName)) {
            if (!$funCheckName($envItems[$key])) {
                $envItems[$key]['status'] = 0;
                $envCheckRes = 0;
            }
        }
        //如果不是开源版，并且没有安装zend Guard Loader，则不给予通过
        if ($key == 'Zend Guard Loader' && !in_array(substr(VERSION, -1), array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9')) && $envItems[$key]['current'] != 'installed') {
            $envItems[$key]['status'] = 0;
            $envCheckRes = 0;
        }
    }
    return array('envItems' => $envItems, 'envCheckRes' => $envCheckRes);
}

/**
 * php版本检测
 * @param array $item php版本信息，在installVal文件定义
 * @return boolean
 */
function phpCheck($evnItem)
{
    if (version_compare(PHP_VERSION, $evnItem['r']) < 0) {
        return false;
    } else {
        return true;
    }
}

/**
 * 数据库引擎检测
 * @param $object object 数据连接对象
 */
function mysqlEngineCheck($object){
    $sql = 'SHOW ENGINES';
    $info = $object->query($sql);
    $bool = true;
    foreach ($info as $item){
        if(($item['Engine'] == 'InnoDB' AND $item['Support'] == 'YES') || ($item['Engine'] == 'InnoDB' AND $item['Support'] == 'DEFAULT')){
            $bool = false;
        }
    }
    if($bool){
        return ajaxReturn(array(
            'isSuccess' => false,
            'msg' => '数据库需要支持 InnoDB 引擎',
            'data' => array('type' => 'engine'),
        ));
    }
}

/**
 * 上传配置检测
 * @param array $evnItem 上传配置信息，在installVal文件定义
 * @return boolean
 */
function attachmentuploadCheck($evnItem)
{
    if (intval($evnItem['current']) < intval($evnItem['r'])) {
        return false;
    } else {
        return true;
    }
}

/**
 * GD库版本检测
 * @param array $evnItem gd版本信息，在installVal文件定义
 * @return boolean
 */
function gdversionCheck($evnItem)
{
    if ($evnItem['current'] == 'no' || strcmp($evnItem['current'], $evnItem['r']) < 0) {
        return false;
    } else {
        return true;
    }
}

/**
 * 文件夹剩余空间检测
 * @param array $evnItem 文件夹空间信息，在installVal文件定义
 * @return boolean
 */
function diskspaceCheck($evnItem)
{
    //var_dump($envItem);die;
    if ($evnItem['current'] == 'unknow') {
        return true; //阿里上根本测不出来大小，所以直接就返回true
    }
    if ( /* $evnItem['current'] == 'unknow' || */
        intval($evnItem['current']) < intval($evnItem['r'])
    ) {
        return false;
    } else {
        return true;
    }
}

/**
 * 检测zend环境和版本
 */
function zendCheck($zendItem)
{
    if (extension_loaded('Zend Guard Loader') || get_cfg_var("zend_extension") || get_cfg_var("zend_extension_ts")) {
        return true;
    } else {
        return false;
    }
}

/**
 * 检测函数依懒性
 * @param array $funcItems 要检测的函数
 */
function funcCheck($funcItems)
{
    global $lang;
    $funcCheckRes = 1;
    foreach ($funcItems as $item => $value) {
        if (!function_exists($item)) {
            $funcItems[$item]['status'] = 0;
            $funcCheckRes = 0;
            $funcItems[$item]['advice'] = $lang['Advice_' . $item];
        } else {
            $funcItems[$item]['advice'] = $lang['None'];
        }
    }
    return array('funcItems' => $funcItems, 'funcCheckRes' => $funcCheckRes);
}

function filesorkCheck($filesockItems)
{
    global $lang;
    $filesockDisabled = 0;
    $filesorkCheckRes = 1;
    foreach ($filesockItems as $item => $value) {
        if (!function_exists($item)) {
            $filesockItems[$item]['status'] = 0;
            $filesockItems[$item]['advice'] = $lang['Advice_' . $item];
            $filesockDisabled++;
        } else {
            $filesockItems[$item]['advice'] = $lang['None'];
        }
    }
    if ($filesockDisabled == count($filesockItems)) {
        $filesorkCheckRes = 0;
    }
    if (!function_exists("curl_init")) {
        $filesorkCheckRes = 0;
    }
    return array('filesockItems' => $filesockItems, 'filesorkCheckRes' => $filesorkCheckRes);
}

/**
 * 函数扩展检测
 * @param array $extLoadedItems 要检测的拓展函数
 * @return array
 */
function extLoadedCheck($extLoadedItems)
{
    global $lang;
    $extLoadedCheckRes = 1;
    foreach ($extLoadedItems as $item => $value) {
        if (!extension_loaded($item)) {
            $extLoadedItems[$item]['status'] = 0;
            $extLoadedItems[$item]['advice'] = $lang['Advice_' . $item];
            $extLoadedCheckRes = 0;
        } else {
            $extLoadedItems[$item]['advice'] = $lang['None'];
        }
    }
    return array('extLoadedItems' => $extLoadedItems, 'extLoadedCheckRes' => $extLoadedCheckRes);
}

/**
 * 目录、文件权限检查
 * @param type $dirfileItems
 */
function dirfileCheck($dirfileItems)
{
    global $lang;
    $dirfileCheckRes = 1;
    foreach ($dirfileItems as $key => $item) {
        $dirfileItems[$key]['msg'] = $lang['Writeable'];
        $item_path = $item['path'];
        if ($item['type'] == 'dir') {
            if (!dirWriteable(PATH_ROOT . $item_path)) {
                if (is_dir(PATH_ROOT . $item_path)) {
                    $dirfileItems[$key]['msg'] = $lang['Unwriteable'];
                    $dirfileItems[$key]['status'] = 0;
                    $dirfileItems[$key]['current'] = '+r';
                    $dirfileCheckRes = 0;
                } else {
                    $dirfileItems[$key]['msg'] = $lang['Nodir'];
                    $dirfileItems[$key]['status'] = -1;
                    $dirfileItems[$key]['current'] = 'nodir';
                    $dirfileCheckRes = 0;
                }
            } else {
                $dirfileItems[$key]['status'] = 1;
                $dirfileItems[$key]['current'] = '+r+w';
            }
        } else {
            if (file_exists(PATH_ROOT . $item_path)) {
                if (is_writable(PATH_ROOT . $item_path)) {
                    $dirfileItems[$key]['status'] = 1;
                    $dirfileItems[$key]['current'] = '+r+w';
                } else {
                    $dirfileItems[$key]['msg'] = $lang['Unwriteable'];
                    $dirfileItems[$key]['status'] = 0;
                    $dirfileItems[$key]['current'] = '+r';
                    $dirfileCheckRes = 0;
                }
            } else {
                if (dirWriteable(dirname(PATH_ROOT . $item_path))) {
                    $dirfileItems[$key]['status'] = 1;
                    $dirfileItems[$key]['current'] = '+r+w';
                } else {
                    $dirfileItems[$key]['msg'] = $lang['Unwriteable'];
                    $dirfileItems[$key]['status'] = -1;
                    $dirfileItems[$key]['current'] = 'nofile';
                    $dirfileCheckRes = 0;
                }
            }
        }
    }
    return array('dirfileItems' => $dirfileItems, 'dirfileCheckRes' => $dirfileCheckRes);
}

/**
 * 判断文件或目录是否可写
 * @param string $dir 文件或目录路径
 * @return boolean
 */
function dirWriteable($dir)
{
    $writeable = 0;
    if (!is_dir($dir)) {
        @mkdir($dir, 0777);
    }
    if (is_dir($dir)) {
        if ($fp = @fopen("$dir/test.txt", 'w')) {
            @fclose($fp);
            $writeable = @unlink("$dir/test.txt");
        } else {
            $writeable = 0;
        }
    }
    return $writeable;
}

/**
 * 获取主机路径，兼容多层目录
 */
function getHostInfo()
{
    $phpself = getScriptUrl();
    $installPath = substr($phpself, 0, strrpos($phpself, '/'));
    $sitePath = str_replace('/install', '', $installPath);
    $isHTTPS = (isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) != 'off') ? true : false;
    if ($secure = getIsSecureConnection()) {
        $http = 'https';
    } else {
        $http = 'http';
    }
    if (isset($_SERVER['HTTP_HOST'])) {
        $hostInfo = $http . '://' . $_SERVER['HTTP_HOST'];
    } else {
        $hostInfo = $http . '://' . $_SERVER['SERVER_NAME'];
        $port = $secure ? getSecurePort() : getPort();
        if (($port !== 80 && !$secure) || ($port !== 443 && $secure)) {
            $hostInfo .= ':' . $port;
        }
    }
    $siteurl = $hostInfo . $sitePath;
    return $siteurl;
}

function getIsSecureConnection()
{
    return isset($_SERVER['HTTPS']) && ($_SERVER['HTTPS'] == 'on' || $_SERVER['HTTPS'] == 1) || isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https';
}

function getPort()
{
    return !getIsSecureConnection() && isset($_SERVER['SERVER_PORT']) ? (int)$_SERVER['SERVER_PORT'] : 80;
}

function getSecurePort()
{
    return getIsSecureConnection() && isset($_SERVER['SERVER_PORT']) ? (int)$_SERVER['SERVER_PORT'] : 443;
}

/**
 * 获取文本执行路径
 * @return string
 * @throws CException
 */
function getScriptUrl()
{
    global $lang;
    $phpSelf = '';
    $scriptName = basename($_SERVER['SCRIPT_FILENAME']);
    if (basename($_SERVER['SCRIPT_NAME']) === $scriptName) {
        $phpSelf = $_SERVER['SCRIPT_NAME'];
    } else if (basename($_SERVER['PHP_SELF']) === $scriptName) {
        $phpSelf = $_SERVER['PHP_SELF'];
    } else if (isset($_SERVER['ORIG_SCRIPT_NAME']) && basename($_SERVER['ORIG_SCRIPT_NAME']) === $scriptName) {
        $phpSelf = $_SERVER['ORIG_SCRIPT_NAME'];
    } else if (($pos = strpos($_SERVER['PHP_SELF'], '/' . $scriptName)) !== false) {
        $phpSelf = substr($_SERVER['SCRIPT_NAME'], 0, $pos) . '/' . $scriptName;
    } else if (isset($_SERVER['DOCUMENT_ROOT']) && strpos($_SERVER['SCRIPT_FILENAME'], $_SERVER['DOCUMENT_ROOT']) === 0) {
        $phpSelf = str_replace('\\', '/', str_replace($_SERVER['DOCUMENT_ROOT'], '', $_SERVER['SCRIPT_FILENAME']));
        $phpSelf[0] != '/' && $phpSelf = '/' . $phpSelf;
    } else {
        throw new CException($lang['Request tainting']);
    }
    return $phpSelf;
}