diff --git a/controller/admin.php b/controller/admin.php
index 1ec6fdb..0afc081 100755
--- a/controller/admin.php
+++ b/controller/admin.php
@@ -23,6 +23,12 @@ check_auth($site_setting['user'],$site_setting['password']);
 $version = new_get_version();
 
 $page = empty($_GET['page']) ? 'index' : $_GET['page'];
+// 正则判断page，只能允许字符+数字和下划线组合
+$pattern = "/^[a-zA-Z0-9_\/]+$/";
+if ( !preg_match($pattern,$page) ) {
+    exit('非法请求!');
+}
+
 
 //如果是后台首页，则判断是否是手机访问，并决定是否跳转到手机版页面
 if( $page == 'index' ) {
@@ -323,6 +329,11 @@ function check_auth($user,$password){
     }
 }
 
+// 判断$page文件是否存在，不存在，则终止执行
+$full_page_path = 'templates/admin/'.$page;
+if( !file_exists($full_page_path) ) {
+    exit("file does not exist!");
+}
 
 // 载入前台首页模板
 require('templates/admin/'.$page);
\ No newline at end of file
diff --git a/controller/api.php b/controller/api.php
index 058e554..1dbbf18 100755
--- a/controller/api.php
+++ b/controller/api.php
@@ -667,4 +667,4 @@ function global_search() {
 function upload_backup(){
     global $api;
     $api->general_upload('data/backup/',['db3']);
-}
\ No newline at end of file
+}
diff --git a/controller/index.php b/controller/index.php
index d733e93..f78470e 100755
--- a/controller/index.php
+++ b/controller/index.php
@@ -9,6 +9,8 @@ $site = unserialize($site);
 // 获取链接数量,默认为30
 $link_num = empty( $site['link_num'] ) ? 30 : intval($site['link_num']);
 
+
+
 //如果已经登录，获取所有分类和链接
 // 载入辅助函数
 require('functions/helper.php');
@@ -77,6 +79,8 @@ if( is_login() ){
 }
 //如果没有登录，只获取公有链接
 else{
+    // 检查分类是否全私有，如果是，则跳转到登录界面
+    check_all_cat();
     //查询分类目录
     $categorys = [];
     //查询一级分类目录，分类fid为0的都是一级分类
diff --git a/controller/init.php b/controller/init.php
index b1395ce..893c48b 100644
--- a/controller/init.php
+++ b/controller/init.php
@@ -66,6 +66,16 @@ function init($data){
     if( empty($data['username']) || empty($data['password']) ) {
         err_msg(-2000,'用户名或密码不能为空！');
     }
+    // 正则验证用户名
+    $u_patt = '/^[0-9a-z]{3,32}$/';
+    if( !preg_match($u_patt,$data['username']) ) {
+        err_msg(-2000,'用户名格式不正确！');
+    }
+    // 正则验证密码
+    $p_patt = '/^[0-9a-zA-Z!@#%^*.()]{6,16}$/';
+    if( !preg_match($p_patt,$data['password']) ) {
+        err_msg(-2000,'密码格式不正确！');
+    }
     $config_file = "data/config.php";
     //检查配置文件是否存在，存在则不允许设置
     if( file_exists($config_file) ) {