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Learn_Hacking_Web/html/login.php

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<?php
// Start the session
session_start();
if(isset($_COOKIE["PHPSESSID"])){
header('Set-Cookie: PHPSESSID='.$_COOKIE["PHPSESSID"].'; SameSite=Lax');
}
?>
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- Bootstrap CSS -->
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
<link href="/bootstrap.min.css" rel="stylesheet">
<title>Learn Hacking (Again)!</title>
</head>
<body>
<div class="container">
<header class="p-3 mb-3 border-bottom" style="background-color: #e3f2fd;">
<div class="container">
<div class="d-flex flex-wrap align-items-center justify-content-center justify-content-lg-start">
<a href="/" class="d-flex align-items-center mb-2 mb-lg-0 text-dark text-decoration-none">
<img class="bi me-2" width="40" height="32" role="img" aria-label="Bootstrap" src="/images/HoodieHacker.svg"/>
</a>
<ul class="nav col-12 col-lg-auto me-lg-auto mb-2 justify-content-center mb-md-0">
<li><a href="/" class="nav-link px-2 link-dark">Overview</a></li>
<li><a href="/topics.php" class="nav-link px-2 link-secondary">Topics</a></li>
<li><a href="/enquire.php" class="nav-link px-2 link-dark">Enquiries</a></li>
<?php
if (isset($_SESSION["userid"])){
echo '<li><a href="/profile.php" class="nav-link px-2 link-dark">Profile</a></li>';
echo '<li><a href="/logout.php" class="nav-link px-2 link-dark">Logout</a></li>';
}
else{
echo '<li><a href="/login.php" class="nav-link px-2 link-dark">Login</a></li>';
}
?>
</ul>
<form class="col-12 col-lg-auto mb-3 mb-lg-0 me-lg-3">
<input type="search" class="form-control" placeholder="Search..." aria-label="Search">
</form>
</div>
</div>
</header>
<div class="row">
<div class="col-8">
<form class="form-signin" method="post">
<h1 class="h3 mb-3 font-weight-normal">Please sign in</h1>
<label for="inputEmail" class="sr-only">uusername</label>
<input type="email" id="inputEmail" name="email" class="form-control" placeholder="email" required autofocus>
<label for="inputPassword" class="sr-only">Password</label>
<input type="password" id="inputPassword" name="password" class="form-control" placeholder="Password" required>
<button class="btn btn-lg btn-primary btn-block" type="submit">Sign in</button>
</form>
</div>
</div>
<!-- Code at https://github.coventry.ac.uk/CUEH/Learn_Hacking_Web -->
<?php
require("conn.php");
//Login Throttle
$date = new DateTime();
$ts = $date->getTimestamp();
$control = $db->querySingle('SELECT * from loginControl WHERE id=1', true);
$timeTaken = $ts-$control["last"];
if ($control["sleepTill"] - $ts > 0){
http_response_code(403);
$timeLeft = $control["sleepTill"]-$ts;
die("<div class='alert alert-warning'>Too Many Requests: Sleeping for {$timeLeft}</div>");
}
$theCount = $control["count"];
if ($theCount > 15){
$sleepyTime = $ts+5;
$qryString = "UPDATE loginControl SET count = 0, last = {$ts}, sleepTill={$sleepyTime} WHERE id = 1";
$db->querySingle($qryString);
$theCount = 0;
}
//Login Logic
$email = $_POST["email"];
$password = $_POST["password"];
$hash = md5($password);
if (isset($email)) {
$newCount = $theCount + 1;
$qryString = "UPDATE loginControl SET count = {$newCount}, last = {$ts} WHERE id = 1";
$db->querySingle($qryString);
$qry = "SELECT * FROM users WHERE email='{$email}'";
$result = $db->query($qry);
$row = $result->fetchArray();
if ($row){
if (strcmp($hash, $row['password']) !== 0 ){
echo "<div class='alert alert-info'>Incorrect Password for ${row['email']}</div>";
}
else {
echo "<div class='alert alert-success'>Login Correct</div>";
$_SESSION["userid"] = $row["id"];
$_SESSION["email"] = $row["email"];
$_SESSION["name"] = $row["name"];
}
}
else {
echo "<div class='alert alert-info'>No Such User</div>";
}
}
?>
</div>
</body>
</html>