onenav/controller/index.php

<?php
/**
 * 首页模板入口
 */

//如果已经登录，获取所有分类和链接
if( is_login() ){
    //查询分类目录
    $categorys = $db->select('on_categorys','*',[
        "ORDER" =>  ["weight" => "DESC"]
    ]);
    //根据category id查询链接
    function get_links($fid) {
        global $db;
        $fid = intval($fid);
        $links = $db->select('on_links','*',[ 
                'fid'   =>  $fid,
                'ORDER' =>  ["weight" => "DESC"]
            ]);
        return $links;
    }
}
//如果没有登录，只获取公有链接
else{
    //查询分类目录
    $categorys = $db->select('on_categorys','*',[
        "property"  =>  0,
        "ORDER" =>  ["weight" => "DESC"]
    ]);
    //根据category id查询链接
    function get_links($fid) {
        global $db;
        $fid = intval($fid);
        $links = $db->select('on_links','*',[ 
            'fid' =>  $fid,
            'property'  =>  0,
            'ORDER' =>  ["weight" => "DESC"]
        ]);
        return $links;
    }
}


//获取访客IP
function getIP() { 
    if (getenv('HTTP_CLIENT_IP')) { 
    $ip = getenv('HTTP_CLIENT_IP'); 
  } 
  elseif (getenv('HTTP_X_FORWARDED_FOR')) { 
      $ip = getenv('HTTP_X_FORWARDED_FOR'); 
  } 
      elseif (getenv('HTTP_X_FORWARDED')) { 
      $ip = getenv('HTTP_X_FORWARDED'); 
  } 
    elseif (getenv('HTTP_FORWARDED_FOR')) { 
    $ip = getenv('HTTP_FORWARDED_FOR'); 
  } 
    elseif (getenv('HTTP_FORWARDED')) { 
    $ip = getenv('HTTP_FORWARDED'); 
  } 
  else { 
      $ip = $_SERVER['REMOTE_ADDR']; 
  } 
      return $ip; 
  } 
//判断用户是否已经登录
function is_login(){
    $key = md5(USER.PASSWORD.getIP().'onenav');
    //获取session
    $session = $_COOKIE['key'];
    //如果已经成功登录
    if($session == $key) {
        return true;
    }
    else{
        return false;
    }
}
// 载入前台首页模板
require('templates/'.TEMPLATE.'/index.php');
?>