1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>TODO: Unknown user</title>
<script>
"use strict";
function fetch(method,url,data/*?*/,creds/*?*/,cb){
if(!creds){
cb=data;
data=undefined;
creds=undefined;
} else if(!cb){
cb=creds;
creds=undefined;
}
if(!cb)throw new Error("No callback passed to fetch");
var xhr=new XMLHttpRequest();
xhr.onreadystatechange=function(ev){
if(xhr.readyState<4)return;
cb(xhr.status,xhr.responseText);
};
if(creds){
xhr.open(method,url,true,creds[0],creds[1]);
} else {
xhr.open(method,url);
}
xhr.send(data);
}
function asciiValid(str){
var i,c;
for(i=0;i<str.length;i++){
c=str.charCodeAt(i);
if(c<32||c>=127)return false;
}
return true;
}
function logoutReload(){
fetch("GET","/todo/authfail",undefined,["baduser","badpass"],function(status,body){
location.href=location.href;
});
}
function doCreateUser(){
var username=document.getElementById("username").value;
var password=document.getElementById("password").value;
var fail;
[["Username",username],["Password",password]].forEach(function(name,value){
fail=true;
if(value.length<3)alert(name+" too short!");
else if(value.length>32)alert(name+" too long!");
else if(!asciiValid(value))alert("Invalid "+name.toLowerCase()+"! Please use only ASCII characters.");
else fail=false;
});
if(fail)return;
fetch("POST","/todo/createuser",undefined,[username,password],function(status,body){
if(status==200){
alert("User \""+username+"\" created successfully. Please login.");
logoutReload();
} else {
alert("Error: "+body);
}
});
}
</script>
<style>
body{
font-family:Georgia,Times,serif;
font-size:14px;
}
</style>
</head>
<body>
<h1>TODO: Unknown user</h1>
<p>The user you entered is not known in the system. You can use the below form to create a new user.
Be aware: this system is not secure.</p>
Username: <input type="text" id="username" placeholder="username"><br>
Password: <input type="password" id="password" placeholder="password"><br>
<input type="button" value="Create user" onclick="doCreateUser();">
<br><br>
<p>You can also <input type="button" onclick="logoutReload();" value="log out and try again"> if you just can't type.</p>
</body>
</html>
|
