food-inventory/login.php
2019-11-12 00:08:09 +01:00

101 lines
3.2 KiB
PHP

<?php
// Include util functions
require_once("./assets/php/utils.php");
// Check if the user is already logged in, if yes then redirect him to welcome page
if (is_connected()) {
header("location: welcome.php");
exit;
}
// Define variables and initialize with empty values
$username = $password = "";
$username_err = $password_err = "";
// Processing form data when form is submitted
if ($_SERVER["REQUEST_METHOD"] == "POST") {
// Check if username is empty
if (empty(trim($_POST["username"]))) {
$username_err = "Please enter your username.";
} else {
$username = trim($_POST["username"]);
}
// Check if password is empty
if (empty(trim($_POST["password"]))) {
$password_err = "Please enter your password.";
} else {
$password = trim($_POST["password"]);
}
// Validate credentials
if (empty($username_err) && empty($password_err)) {
// Check if username exists, if yes then verify password
if (get_username_count($username) == 1) {
if (correct_email_password($username, $password)) {
if (is_https()) {
connect_user(get_user_id_from_email($username), isset($_POST["stay_loggedin"]));
// Redirect user to welcome page
header("location: welcome.php");
} else {
$username_err = "Please use HTTPS.";
}
} else {
// Display an error message if password is not valid
$username_err = "Invalid Username/Password.";
}
} else {
$username_err = "Invalid Username/Password.";
}
}
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Login</title>
<style type="text/css">
body {
font: 14px sans-serif;
}
.wrapper {
width: 350px;
padding: 20px;
}
</style>
</head>
<body>
<div class="wrapper">
<h2>Login</h2>
<p>Please fill in your credentials to login.</p>
<form action="<?php echo htmlspecialchars($_SERVER["PHP_SELF"]); ?>" method="post">
<div class="form-group <?php echo (!empty($username_err)) ? 'has-error' : ''; ?>">
<label>Username</label>
<input type="text" name="username" class="form-control" value="<?php echo $username; ?>">
<span class="help-block"><?php echo $username_err; ?></span>
</div>
<div class="form-group <?php echo (!empty($password_err)) ? 'has-error' : ''; ?>">
<label>Password</label>
<input type="password" name="password" class="form-control">
<span class="help-block"><?php echo $password_err; ?></span>
</div>
<div>
<label>Remember me</label>
<input type="checkbox" name="stay_loggedin"/>
</div>
<div class="form-group">
<input type="submit" class="btn btn-primary" value="Login">
</div>
<p>Don't have an account? <a href="register.php">Sign up now</a>.</p>
</form>
</div>
</body>
</html>