MAINHACK

Viewing / Editing File: auth.php

<?php
include("functions.php");
if (isset($_GET['schoolCode']) && !empty($_GET['schoolCode'])) {
  $schoolCode = test_input($_GET['schoolCode']);

$message = "";
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    $index_no = test_input($_POST['index_no']);

$query = "SELECT voting_code FROM enrol_details WHERE voting_code = '$index_no'  AND s_code = '$schoolCode' AND vote IS NULL  LIMIT 1";
    $result = mysqli_query($new, $query);

if (mysqli_num_rows($result) > 0) {
        // ✅ Found student
        $student = mysqli_fetch_array($result);
         $getcode = $student['voting_code'];

$_SESSION['voting_code'] = $student['voting_code'];
          header("location:studentballot?schoolCode=$schoolCode");

} else {
        // ❌ Code not found
        $message = "<div class='alert alert-danger text-center'>Invalid voting code/Already voted. Please try again.</div>";
    }
}
}
?>

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Authentication</title>
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
  <style>
      body {
          background: url('okk.jpg') no-repeat center center fixed; /* Replace with your image */
          background-size: cover;
          display: flex;
          justify-content: center;
          align-items: center;
          height: 70vh;
          margin: 0;
      }
      .attendance-card {
          width: 100%;
          max-width: 400px;
          padding: 20px;
          border-radius: 12px;
          box-shadow: 0 4px 12px rgba(0,0,0,0.2);
          background: rgba(255, 255, 255, 0.9);
          backdrop-filter: blur(5px);
      }
      .clock {
          font-size: 1.8rem;
          font-weight: bold;
          text-align: center;
          margin-bottom: 15px;
          color: #198754;
      }
  </style>
</head>
<body>
  <div class="attendance-card">
      <h4 class="text-center mb-3">Voting Code</h4>

<?php if(isset($message) && $message) { echo $message; } ?>

<form id="voteForm" method="post" novalidate>
          <div class="mb-3">
              <input type="text" id="index_no" name="index_no" class="form-control text-center" placeholder="Enter your code" required>
              <div class="invalid-feedback text-center">
                  Please enter a valid code (only letters and numbers, min 4 characters).
              </div>
          </div>
          <div class="d-grid">
              <button type="submit" class="btn btn-success">Verify</button>
          </div>
      </form>
  </div>

form.addEventListener("submit", function (event) {
        const code = input.value.trim();
        const pattern = /^[A-Za-z0-9]{4,}$/; // letters & numbers, at least 4 characters

if (!pattern.test(code)) {
          event.preventDefault();
          event.stopPropagation();
          input.classList.add("is-invalid");
        } else {
          input.classList.remove("is-invalid");
          input.classList.add("is-valid");
        }
      });
    });
  </script>
</body>
</html>

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