Controller base class

Very simple and practical controller base class

/**
 * @desc controller base class
 * @date 2013-05-06
 * @author liudesheng
*/
defined('SYS_PATH') || die('Access Illegal');
class controller
{
 //Current controller
 protected $_controller;
 //Current action method
 protected $_action;
 //Permission array
 protected $_permissions;
 //Template file
 private $_layout = 'layout';

 //Constructor function
 function __construct($controller,$action )
 {
 if('exception' != $controller){
 $this->_controller = $controller;
 $this->_action = $action;

 //Login check and access permission control part, login The page does not require verification
 $trust_action = util::c('trust_action');
 if(!isset($trust_action[$this->_controller]) || !in_array($this->_action,$trust_action[ $this->_controller])){
 $this->login();
 //$this->privilege();
 }
 $this->init();
 }else{// Exception handling
 $this->exception($action);
 }
 }

 //Initialization method, used for inheritance operations
 protected function init(){}

 //Exception handling method
 private function exception($ msg)
 {
 $this->showErr($msg,$layout);
 }

 //Verify login
 private function login()
 {
 if(!$this->isLogin()){
 if($this->isAjax()){
 header('HTTP/1.1 403 Forbidden');
 header("Error-Json:{code:'login'}");
 exit();
 }else {
 $this->redirect('index','login');
 }
 }
 }

 //Determine whether to log in
 protected final function isLogin()
 {
 $auth = isset($_COOKIE[' auth'])?$_COOKIE['auth']:'';
 $isLogin = false;
 if($auth){
 $info = trim(file_get_contents('check.txt'));
 if(strcmp( $auth,md5('steve'.$info.util::c('login_auth_suffix'))) == 0){
 $isLogin = true;
 }
 }
 return $isLogin;
 }

 //Verification Permissions
 private function privilege()
 {
 $this->getPermissions();
 if(!$this->isAllow()){
 if($this->isAjax()){
 header(' HTTP/1.1 403 Forbidden');
 header( "Error-Json:{code:'access'}");
 exit();
 }else{
 $this->showErr('Sorry, you do not have this permission ');
 }
 }
 }

 //Get permission information
 protected final function getPermissions()
 {
 $privilege = $this->admin['privilege'];
 $permissions_priv = util::c( 'permissions',$privilege);
 if(!isset($permissions_priv['city'])){
 $this->cityPriv = 'all'; //In order to simplify the list query, it is possible to add all city permissions in the future Select
 }else{
 unset($permissions_priv['city']);
 }
 foreach($permissions['common'] as $ct => $ac){
 if(isset($permissions_priv[$ct] ) && 'all' == $permissions_priv[$ct])
 continue;
 if('all' == $ac)
 $permissions_priv[$ct] = 'all';
 else //This case must be an array , save resources and don’t make judgments
 $permissions_priv[$ct] = isset($permissions_priv[$ct])?array_merge($permissions_priv[$ct],$ac):$ac;
 }
 $this-> _permissions = $permissions_priv;
 }

 //Determine whether there is permission based on the permission type
 protected final function isAllow($controller='',$action='')
 {
 if(!isset($this->_permissions ))
 $this->getPermissions();
 $allow = false;
 $ct = $controller?$controller:$this->_controller;
 $ac = $action?$action:$this-> _action;
 $permission_action = $this->_permissions[$ct];
 if($permission_action && ('all' == $permission_action || in_array($ac,$permission_action) || 'any' == $action ))
 $allow = true;
 return $allow;
 }


 //Error message page
 protected function showErr($errMsg,$layout = null)
 {
 $this->title = "Error message" ;
 $this->errMsg = $errMsg;
 $this->render('error',$layout);
 }

 //Success information page
 protected function showSucc($msg,$skipUrl,$skipPage ,$layout = null)
 {
 $this->title = "Success Tip";
 $this->msg = $msg;
 $this->skipUrl = $skipUrl;
 $this->skipPage = $skipPage;
 $this->render('success',$layout);
 }

 //Show permissioned links
 protected function showPemissionLink($title,$ct,$ac,$param=array( ),$wrap='')
 {
 if($wrap){
 $wrap_start = '<'.$wrap.'>';
 $wrap_end = ' ';
 }else{
 $wrap_start = $wrap_end = '';
 }
		if($this->isAllow($ct,$ac))
		    echo $wrap_start,'',$title,'',$wrap_end;
	}

	//视图解析方法
	protected function render($template = null,$layout = null)
	{
		!is_null($layout) && $this->_layout = $layout;
		!$template && $template = $this->_controller.'_'.$this->_action;
		ob_start();
		include(MODULE_PATH.'views/'.$this->_layout.'.tpl.php');
		$content = ob_get_clean();
		if($this->staticFile){
			file_put_contents($this->staticFile,$content);
		}
		echo $content;
		exit;
	}

	protected function showHtml($html,$expire=3600,$path='')
	{
         empty($path) && $path=ROOT_PATH;
		 $this->staticFile = sprintf('%s%s.html',$path,$html);
		 $mkhtml = intval($this->_G('mkhtml'));
		 if(!$mkhtml){
			 if(file_exists($this->staticFile)){
				 $fmtime = filemtime($this->staticFile);
				 if(time()-$fmtime < $expire && date('Ymd') == date('Ymd',$fmtime)){
					 include $this->staticFile;
					 exit;
				 }
			 }
		 }
	}

	//生成url
	protected function url($ct='',$ac='',$param = array(),$module='')
	{
		return $GLOBALS['app']->url($ct,$ac,$param,$module);
	}

	//url跳转
	protected function redirect($ct='',$ac='',$param = array())
	{
		header('location:'.$this->url($ct,$ac,$param));
		exit();
	}

   //url跳转
	protected function redirectUrl($url)
	{
		header('location:'.$url);
		exit();
	}

	//获取back redirect url
	protected function getBru()
	{
		return $_COOKIE[util::c('bru_cookie_name')]?$_COOKIE[util::c('bru_cookie_name')]:$this->url();
	}

	//是否是ajax请求
	protected function isAjax()
	{
		if(isset( $_SERVER['HTTP_X_REQUESTED_WITH']) && $_SERVER['HTTP_X_REQUESTED_WITH'] == 'XMLHttpRequest')
			return true;
		return false;
	}

	//返回json数组
	protected function returnJson($data)
	{
		echo json_encode($data);
		exit();
	}

	//GET
	protected function _G($name)
	{
		return isset($_GET[$name])?util::sanitize($_GET[$name]):'';
	}
	//POST
	protected function _P($name)
	{
		if(!isset($_POST[$name]) || (is_string($_POST[$name]) && mb_strpos($_POST[$name],'请输入',0,'gbk') === 0)){
			return '';
		}else{
			return util::sanitize($_POST[$name]);
		}
	}
    //REQUEST
	protected function _R($name)
	{
		return isset($_REQUEST[$name])?util::sanitize($_REQUEST[$name]):'';
	}
}