Walrus/Walrus.Sample.Python/index.html at master · devcat-studio/Walrus · GitHub

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<!doctype html>
<html>
<head>
<meta charset=utf-8>
<title>Walrus example</title>
<style>
fieldset { float: left; }
thead tr { background: silver; }
td { font-family: monospace; width: 10em; }
</style>
<script src=Walrus.standalone.min.js></script>
<script>
function $(id) { return document.getElementById(id); }

function post(url, data, resolve, reject) {
	var req = new XMLHttpRequest();
	var done = false;
	req.open('POST', url, true);
	req.onreadystatechange = function(e) {
		if (req.readyState === 4) {
			if (done) return;
			if (req.status == 200) {
				return resolve(req.responseText);
			} else {
				return reject();
			}
			done = true;
		}
	};
	req.onerror = function() {
		if (!done) {
			return reject();
			done = true;
		}
	};
	req.send(data);
}

function withWebAuth(resolve, reject) {
	post('/params', null, function(params) {
		try {
			var auth = new Walrus.WebAuth(params);
		} catch (e) {
			return reject();
		}
		return resolve(auth);
	}, reject);
}

function withSigninResult(auth, user, secret, resolve, reject) {
	var data = JSON.stringify([user, secret]);
	post('/signin', data, function(result) {
		auth.decodeResultAsString(result, function(output) {
			return resolve(output);
		}, reject);
	}, reject);
}

function signin(form, fieldset, user, pass) {
	fieldset.disabled = true;
	function finish() {
		fieldset.disabled = false;
		form.reset();
		user.focus();
	}

	withWebAuth(function(auth) {
		auth.makeSecret(user.value, pass.value, function(secret) {
			withSigninResult(auth, user.value, secret, function(output) {
				alert('signed in as [' + user.value + '] with comments:\n' + output);
				finish();
				refreshUsers(); // may have changed the secrets
			}, function() {
				alert('failed to sign in');
				finish();
			});
		});
	}, function() {
		alert('failed to load client authentication parameters');
		finish();
	});
	return false;
}

function signup(form, fieldset, user, pass, comment) {
	fieldset.disabled = true;
	function finish() {
		fieldset.disabled = false;
		form.reset();
		user.focus();
	}

	withWebAuth(function(auth) {
		auth.makeSecret(user.value, pass.value, function(secret) {
			var data = JSON.stringify([user.value, secret, comment.value]);
			post('/signup', data, function(output) {
				if (output === 'OK') {
					alert('signed up as [' + user.value + ']');
				} else {
					alert('failed to sign up: ' + output);
				}
				finish();
				refreshUsers();
			}, function() {
				alert('failed to sign up');
				finish();
			});
		});
	}, function() {
		alert('failed to load client authentication parameters');
		finish();
	});
	return false;
}

function changeCost(value, fieldset) {
	fieldset.disabled = true;
	function finish() {
		fieldset.disabled = false;
	}

	post('/change-cost', value, function(newcost) {
		if (newcost !== '') {
			alert('okay, new cost is: ' + newcost);
		} else {
			alert('failed to change storage cost');
		}
		finish();
	}, function() {
		alert('failed to change storage cost');
		finish();
	});
	return false;
}

function refreshUsers() {
	var tab = $('users');
	post('/users', null, function(data) {
		data = JSON.parse(data);
		tab.innerHTML = ''; // empty all the things
		for (var i = 0; i < data.length; ++i) {
			var row = document.createElement('tr');
			for (var j = 0; j < data[i].length; ++j) {
				var col = document.createElement('td');
				col.textContent = data[i][j];
				row.appendChild(col);
			}
			tab.appendChild(row);
		}
	}, function() {
		tab.innerHTML = '<tr><td colspan=3 align=center>Failed to load</td></tr>';
	});
	return false;
}
</script>
</head>
<body onload="refreshUsers()">
<fieldset id=signin style=width:20em>
	<legend>Sign in</legend>
	<form method=post onsubmit="return window.signin(this, $('signin'), $('signin_user'), $('signin_pass'))">
	<input type=text id=signin_user required placeholder=Username><br>
	<input type=password id=signin_pass required placeholder=Password><br>
	<input type=submit value="Sign in">
	</form>
	<hr>
	Change storage cost:<br>
	<button value=b0a40100 onclick="return window.changeCost(this.value, $('signin'))">16 MB, r=16, p=1</button>
	<button value=b0d40400 onclick="return window.changeCost(this.value, $('signin'))">128 MB, r=16, p=4</button>
</fieldset>
<fieldset id=signup style=width:15em>
	<legend>Sign up</legend>
	<form method=post onsubmit="return window.signup(this, $('signup'), $('signup_user'), $('signup_pass'), $('signup_comment'))">
	<input type=text id=signup_user required placeholder=Username><br>
	<input type=password id=signup_pass required placeholder=Password><br>
	<textarea id=signup_comment rows=4 style=width:100% placeholder=Comment></textarea><br>
	<input type=submit value="Sign up">
	</form>
</fieldset>
<fieldset style=width:30em>
	<legend>Users</legend>
	<table border=1 width=100%>
		<thead><tr><th>User</th><th>Stored Secret</th><th>Comments</th></tr></thead>
		<tbody id=users></tbody>
	</table>
</fieldset>
</body>
</html>