适当的PHP登录授权

时间:2016-02-06 01:04:48

标签: php html login authorization

我正在编辑旧页面,我需要对该页面进行授权访问。现在代码是在php中,基本上我设置了1个用户名和1个密码,可以绕过登录屏幕,如果授权成功,登录会将我重定向到我的“秘密”页面。

但是,如果有人知道该“秘密”页面的URL“(例如.... / secrets / secret1.php),他可以绕过登录界面。在这种情况下,最佳解决方案是什么?” p>

我尝试通过编辑.htaccess来隐藏php扩展,但它没有用。我也不想完全隐藏地址栏。

2 个答案:

答案 0 :(得分:1)

在您的登录页面中,您可以设置当前用户的会话,以授予其访问需要授权的页面的权限。

例如,如果您有一个登录页面,如:

<?php
/*
Log-In
*/

 // Declare Username and Password
 $my_username = "admin";
 $my_password = "rootstemleaves";

 // Declare Page to Redirect
 $secret_page = "../secrets/secrets1.php";

 // Set Initial Value
 $proceed = 0;

 // Check if username is empty 
 if(empty($_POST['username'])){

  // Tell user that username is empty
  echo "You need to put a username!";
  // Set to not proceed
  $proceed = 0;

 } else {

  // Set to proceed 
  $proceed = 1;

 }

 // Check if empty password
 if(empty($_POST['password'])){

  // Tell user that password is empty
  echo "You need to put your password";
  // Set to not proceed
  $proceed = 0;

 } else {

  // Set to proceed
  $proceed = 1;

 }

 // Finally Proceed if Checked to be ok
 if($proceed == 1){

  // Check if username is not the same
  if($username !== $my_username){

   // Tell user that they entered the wrong username
   echo "Wrong username!";

  } else {

    // Check if password is not the same
    if($password !== $my_password){

      // Tell user that they entered the wrong password
      echo "Wrong Password";

    } else {

      // Finally redirect to page
      header("Login: $secret_page");

    }

  }

 }

?>

<!Doctype html>
<html>
 <h1>Log-In</h1>

 <form method='post'>

  <input type='text' name='username' placeholder='Username'><br>
  <input type='password' name='password' placeholder='Password'><br>
  <br>
  <button type='submit'>Submit</button>

 </form>

</html>

您只需添加session_start();即可开始会话并将用户设置为登录,以便他们可以访问秘密页面(如果已获得授权)。

因此,您的登录页面看起来应该更像:

<?php
/*
Log-In
New!!!
*/

 // It is important to tell PHP to start the session at the beginning of the file
 session_start();

 // Declare Username and Password
 $my_username = "admin";
 $my_password = "rootstemleaves";

 // Declare Page to Redirect
 $secret_page = "../secrets/secrets1.php";

 // Check if the user is logged in already or not.
 if(!empty($_SESSION['logged_in'])){

   // Immediately redirect to page
   header("Location: $secret_page");

 }

 // Set Initial Value
 $proceed = 0;

 // Check if username is empty 
 if(empty($_POST['username'])){

  // Tell user that username is empty
  echo "You need to put a username!";
  // Set to not proceed
  $proceed = 0;

 } else {

  // Set to proceed 
  $proceed = 1;

 }

 // Check if empty password
 if(empty($_POST['password'])){

  // Tell user that password is empty
  echo "You need to put your password";
  // Set to not proceed
  $proceed = 0;

 } else {

  // Set to proceed
  $proceed = 1;

 }

 // Finally Proceed if Checked to be ok
 if($proceed == 1){

  // Check if username is not the same
  if($username !== $my_username){

   // Tell user that they entered the wrong username
   echo "Wrong username!";

  } else {

    // Check if password is not the same
    if($password !== $my_password){

      // Tell user that they entered the wrong password
      echo "Wrong Password";

    } else {

      // Set the session !!!
      $_SESSION['logged_in'] = True;

      // Finally redirect to page
      header("Login: $secret_page");

    }

  }

 }

?>

<!Doctype html>
<html>
 <h1>Log-In</h1>

 <form method='post'>

  <input type='text' name='username' placeholder='Username'><br>
  <input type='password' name='password' placeholder='Password'><br>
  <br>
  <button type='submit'>Submit</button>

 </form>

</html>

看看在我们要重定向用户的逻辑结尾处,我们设置了$_SESSION['logged_in'] = True;,因为我们将在稍后的页面中检查需要授权的页面。

因此,在您的秘密页面中,如果用户已登录,则需要添加到顶部:

<?php
/*
Secret Page
*/

// Start the session (Important!)
session_start();

// Your Login Page
$login_page = "login.php";

// Check if user is logged in
if($_SESSION['logged_in'] !== True){

 // Redirect to Your Login Page to Prevent Unauthorized Access
 header("Location: $login_page");

}
?>

此外,如果您需要注销用户,请使用以下代码创建logout.php:

<?php
/*
Log-Out
*/

// Start the Session (Important!)
session_start();

// Your Login Page
$login_page = "login.php";

// Destroy the session!
session_destory();

// Finally, redirect your user to the log-in page in case they wanted to log-in again
header("Location: $login_page");

?>

因此,在隐藏页面中,只需添加<a href="logout.php">Logout</a>即可注销。

确保将来使用数据库来存储登录凭据并对密码进行哈希和加密(永远不要以纯文本形式存储密码!)

希望有所帮助

答案 1 :(得分:0)

d。 melnik是对的,尝试在您的网页上使用php会话。例如:

if (!$_SESSION['user'])
{
 //do this
}

user是数据库中值的一个示例。

始终在您的登录页面中启动会话

session_start();
希望它有所帮助。

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