<?php
	function loggedIn() {
		if(isset($_COOKIE['username']) && isset($_COOKIE['password'])) {
			if(verify($_COOKIE['username'], $_COOKIE['password'])) {
				return true;
			} else {
				return false;
			}
		}
	}

	function verify($user, $pass) {
		if($user == "haykuro") {
			if($pass == "mypass") {
				return true;
			} else {
				return false;
			}
		} else if($user == "s0cket") {
			if($pass == "+h25stN%") {
				return true;
			} else {
				return false;
			}
		} else {
			return false;
		}
	}

	if(loggedIn()) {
		if(isset($_GET['page'])) {
			$page = htmlentities($_GET['page']);
			if($page == "logout") {
				setcookie("username", "", time() - 3600);
				setcookie("password", "", time() - 3600);
				$output = "Successfully logged out! <a href=\"admin.php\">Please click here to continue!</a><br />";
			} else {
				$output = "Please choose an option from above!";
			}
		} else {
			$output = "Please choose an option from above!";
		}
		$username = htmlentities($_COOKIE['username']);
		echo "Welcome to the admin panel, <strong>{$username}</strong><br />";
		echo "<a href=\"admin.php?page=logout\">Logout</a><br />";
		if(isset($output)) { echo $output; }
	} else {
		if(isset($_POST['dologin']) && isset($_POST['username']) && isset($_POST['password'])) {
			if(verify($_POST['username'], $_POST['password'])) {
				if(setcookie("username", $_POST['username'])) {
					if(setcookie("password", $_POST['password'])) {
						echo "Successfully logged in.<br /><a href=\"admin.php\">Please click here to continue.</a>";
					} else {
						echo "Sorry, failed to login.";
					}
				} else {
					echo "Sorry, failed to login.";
				}
			} else {
				echo "Sorry, invalid credentials provided.";
			}
		} else {
			?>
			<form action="" method="post">
			Username: <input type="text" name="username" /><br />
			Password: <input type="password" name="password" /><br />
			<input type="submit" value="Login" name="dologin" />
			</form>
			<?php
		}
	}
?>