DK2/src/auth.php
2024-10-03 16:25:25 -05:00

80 lines
2.3 KiB
PHP

<?php
/**
* Checks if the given username already exists.
*/
function auth_username_exists(string $username): bool
{
return db_exists(db_auth(), 'users', 'username', $username);
}
/**
* Checks if the given email already exists.
*/
function auth_email_exists(string $email): bool
{
return db_exists(db_auth(), 'users', 'email', $email);
}
/**
* Check for a user session. If $_SESSION['user'] already exists, return early. If not, check for a remember me
* cookie. If a remember me cookie exists, validate the session and set $_SESSION['user'].
*/
function auth_check(): bool
{
if (isset($_SESSION['user'])) return true;
if (isset($_COOKIE['remember_me'])) {
$session = session_validate($_COOKIE['remember_me']);
if ($session === true) {
$user = user_find($session['user_id']);
unset($user['password']);
$_SESSION['user'] = user_find($session['user_id']);
$_SESSION['char'] = char_find($user['char_id']);
return true;
}
}
return false;
}
/**
* Ensure a user is logged in, or redirect to the login page. This will also check for a remember me cookie and
* populate the $_SESSION['user'] array.
*/
function auth_only(): void
{
if (!auth_check()) redirect('/auth/login');
}
/**
* If there is a user logged in, redirect to the home page. Used for when we have a guest-only page.
*/
function guest_only(): void
{
if (auth_check()) redirect('/');
}
/**
* Ensure the user has a character selected. If they have no character, redirect to the character creation page. Otherwise,
* select the first character attached to the user.
*/
function must_have_character(): void
{
// If there is a character selected, make sure the session is up to date.
if ($_SESSION['user']['char_id'] !== 0) {
$char = db_query(db_live(), 'SELECT * FROM characters WHERE id = :c', [':c' => $_SESSION['user']['char_id']])->fetchArray(SQLITE3_ASSOC);
$_SESSION['char'] = $char;
return;
}
// if no characters, redirect to create first
if (char_count(user('id')) === 0) redirect('/character/create-first');
// if no character selected, select the first one
if ($_SESSION['user']['char_id'] === 0) {
$char = db_query(db_live(), 'SELECT * FROM characters WHERE user_id = :u ORDER BY id ASC LIMIT 1', [':u' => user('id')])->fetchArray(SQLITE3_ASSOC);
change_user_character($char['id']);
}
}