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- <?php
- include_once "config.php";
- $error_msg = "";
- if (isset($_POST['username'], $_POST['email'], $_POST['p'])) {
- // Sanitize and validate the data passed in
- $username = filter_input(INPUT_POST, 'username', FILTER_SANITIZE_STRING);
- $email = filter_input(INPUT_POST, 'email', FILTER_SANITIZE_EMAIL);
- $email = filter_var($email, FILTER_VALIDATE_EMAIL);
- if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
- // Not a valid email
- $error_msg .= '<p class="error">The email address you entered is not valid</p>';
- }
- $password = filter_input(INPUT_POST, 'p', FILTER_SANITIZE_STRING);
- if (strlen($password) != 128) {
- // The hashed pwd should be 128 characters long. If it's not, something really odd has happened
- $error_msg .= '<p class="error">Invalid password configuration.</p>';
- }
- $print_r = "SELECT id FROM users WHERE email = ? LIMIT 1";
- $stmt = $mysqli->prepare($print_r);
- if ($stmt) {
- $stmt->bind_param('s', $email);
- $stmt->execute();
- $stmt->store_result();
- if ($stmt->num_rows == 1) {
- // A user with this email address already exists
- $error_msg .= '<p class="error">A user with this email address already exists.</p>';
- }
- } else {
- $error_msg .= '<p class="error">Database error</p>';
- }
- // We'll also have to account for the situation where the user doesn't have
- // rights to do registration, by checking what type of user is attempting to perform the operation.
- if (empty($error_msg)) {
- // Create a random salt
- $random_salt = hash('sha512', uniqid(openssl_random_pseudo_bytes(16), TRUE));
- // Create salted password
- $password = hash('sha512', $password . $random_salt);
- // Insert the new user into the database
- if ($insert_stmt = $mysqli->prepare("INSERT INTO users (username, email, password, salt) VALUES (?, ?, ?, ?)")) {
- $insert_stmt->bind_param('ssss', $username, $email, $password, $random_salt);
- // Execute the prepared query.
- if (! $insert_stmt->execute()) {
- header('Location: ../error.php?err=Registration failure: INSERT');
- exit();
- }
- }
- header('Location: ./register.php');
- exit();
- }
- }
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