initial commit

2025-08-08 22:15:51 +02:00
commit 03fde990ca
10 changed files with 386 additions and 0 deletions
--- a/login.php
+++ b/login.php
@@ -0,0 +1,101 @@
+<?php
+session_start();
+include('inc/db.php');
+
+
+if ($_SERVER["REQUEST_METHOD"] == "POST") {
+    $username = $_POST['username'];
+    $password = $_POST['password'];
+
+    // 1. Prepared Statement vorbereiten
+    $stmt = mysqli_prepare($conn, "SELECT id, username, password, role FROM users WHERE username = ?");
+    if ($stmt) {
+        mysqli_stmt_bind_param($stmt, "s", $username);
+        mysqli_stmt_execute($stmt);
+        $result = mysqli_stmt_get_result($stmt);
+        $user = mysqli_fetch_assoc($result);
+        mysqli_stmt_close($stmt);
+
+        if ($user && isset($user['role']) && password_verify($password, $user['password'])) {
+            // Authentifizierung erfolgreich, Session-Variablen setzen
+            $_SESSION['user_id'] = $user['id'];
+            $_SESSION['username'] = $username;
+            $_SESSION['role'] = $user['role'];
+
+            // Token generieren und in der Datenbank speichern
+            $token = bin2hex(random_bytes(32));
+            $update_stmt = mysqli_prepare($conn, "UPDATE users SET login_token = ? WHERE id = ?");
+            if ($update_stmt) {
+                mysqli_stmt_bind_param($update_stmt, "si", $token, $user['id']);
+                mysqli_stmt_execute($update_stmt);
+                mysqli_stmt_close($update_stmt);
+            }
+
+            // Cookies setzen, die 30 Tage gültig sind
+            setcookie('auth_token', $token, time() + (86400 * 30), "/");
+            setcookie('user_id', $user['id'], time() + (86400 * 30), "/");
+
+            header("Location: index.php");
+            exit();
+        } else {
+            $error = "Login fehlgeschlagen.";
+        }
+    } else {
+        // Fehler beim Vorbereiten des Statements
+        $error = "Datenbankfehler.";
+    }
+}
+
+?>
+
+<!DOCTYPE html>
+<html lang="de">
+
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <title>DoMiLi – Login</title>
+    <!-- Bootstrap CSS -->
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
+    <!-- Google Fonts Icons -->
+    <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
+    <link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined" rel="stylesheet">
+    <!-- Custom styles -->
+    <link rel="stylesheet" href="css/style.css">
+</head>
+
+<body>
+
+    <div class="container d-flex justify-content-center align-items-center min-vh-100 py-4">
+        <div class="card bg-light shadow w-100" style="max-width: 400px;">
+            <div class="card-body">
+                <h4 class="card-title text-center mb-4 fs-3">DoMiLi Login</h4>
+
+                <?php if (isset($error)) {
+                ?>
+                    <div class="alert alert-danger" role="alert">
+                        <?php echo $error; ?>
+                    </div>
+                <?php
+                }
+                ?>
+
+                <form method="post" action="">
+                    <div class="mb-3">
+                        <label for="username" class="form-label">Benutzername</label>
+                        <input type="text" class="form-control form-control-lg" id="username" name="username" required autofocus>
+                    </div>
+                    <div class="mb-3">
+                        <label for="password" class="form-label">Passwort</label>
+                        <input type="password" class="form-control form-control-lg" id="password" name="password" required>
+                    </div>
+                    <div class="d-grid">
+                        <button type="submit" class="btn btn-primary btn-lg">Einloggen</button>
+                    </div>
+                </form>
+            </div>
+        </div>
+    </div>
+
+
+    <?php include('inc/footer.php'); ?>