sync/lib/database/accounts.js

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//var db = require("../database");
var $util = require("../utilities");
var bcrypt = require("bcrypt");
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var db = require("../database");
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var Config = require("../config");
var registrationLock = {};
var blackHole = function () { };
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module.exports = {
init: function () {
},
/**
* Check if a username is taken
*/
isUsernameTaken: function (name, callback) {
db.query("SELECT name FROM `users` WHERE name=?", [name],
function (err, rows) {
if (err) {
callback(err, true);
return;
}
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callback(null, rows.length > 0);
});
},
/**
* Search for a user by name
*/
search: function (name, fields, callback) {
/* This bit allows it to accept varargs
Function can be called as (name, callback) or
(name, fields, callback)
*/
if (typeof callback !== "function") {
if (typeof fields === "function") {
callback = fields;
fields = ["name"];
} else {
return;
}
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}
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// Don't allow search to return password hashes
if (fields.indexOf("password") !== -1) {
fields.splice(fields.indexOf("password"));
}
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db.query("SELECT " + fields.join(",") + " FROM `users` WHERE name LIKE ?",
["%"+name+"%"],
function (err, rows) {
if (err) {
callback(err, true);
return;
}
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callback(null, rows);
});
},
/**
* Registers a new user account
*/
register: function (name, pw, email, ip, callback) {
// Start off with a boatload of error checking
if (typeof callback !== "function") {
callback = blackHole;
}
if (typeof name !== "string" || typeof pw !== "string") {
callback("You must provide a nonempty username and password", null);
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return;
}
var lname = name.toLowerCase();
if (registrationLock[lname]) {
callback("There is already a registration in progress for "+name,
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null);
return;
}
if (!$util.isValidUserName(name)) {
callback("Invalid username. Usernames may consist of 1-20 " +
"characters a-z, A-Z, 0-9, -, _, and accented letters.",
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null);
return;
}
if (typeof email !== "string") {
email = "";
}
if (typeof ip !== "string") {
ip = "";
}
// From this point forward, actual registration happens
// registrationLock prevents concurrent database activity
// on the same user account
registrationLock[lname] = true;
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this.getAccounts(ip, function (err, accts) {
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if (err) {
delete registrationLock[lname];
callback(err, null);
return;
}
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if (accts.length >= Config.get("max-accounts-per-ip")) {
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delete registrationLock[lname];
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callback("You have registered too many accounts from this "+
"computer.", null);
return;
}
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module.exports.isUsernameTaken(name, function (err, taken) {
if (err) {
delete registrationLock[lname];
callback(err, null);
return;
}
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if (taken) {
delete registrationLock[lname];
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callback("Username is already registered", null);
return;
}
bcrypt.hash(pw, 10, function (err, hash) {
if (err) {
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delete registrationLock[lname];
callback(err, null);
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return;
}
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db.query("INSERT INTO `users` " +
"(`name`, `password`, `global_rank`, `email`, `profile`, `ip`, `time`)" +
" VALUES " +
"(?, ?, ?, ?, '', ?, ?)",
[name, hash, 1, email, ip, Date.now()],
function (err, res) {
delete registrationLock[lname];
if (err) {
callback(err, null);
} else {
callback(null, {
name: name,
hash: hash
});
}
});
});
});
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});
},
/**
* Verify a username/password pair
*/
verifyLogin: function (name, pw, callback) {
if (typeof callback !== "function") {
return;
}
if (typeof name !== "string" || typeof pw !== "string") {
callback("Invalid username/password combination", null);
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return;
}
/* Passwords are capped at 100 characters to prevent a potential
denial of service vector through causing the server to hash
ridiculously long strings.
*/
pw = pw.substring(0, 100);
/* Note: rather than hash the password and then query based on name and
password, I query by name, then use bcrypt.compare() to check that
the hashes match.
*/
db.query("SELECT name,password,global_rank FROM `users` WHERE name=?",
[name],
function (err, rows) {
if (err) {
callback(err, null);
return;
}
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if (rows.length === 0) {
callback("User does not exist", null);
return;
}
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bcrypt.compare(pw, rows[0].password, function (err, match) {
if (err) {
callback(err, null);
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} else if (!match) {
callback("Invalid username/password combination", null);
} else {
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callback(null, {
name: rows[0].name,
hash: rows[0].password,
global_rank: rows[0].global_rank
});
}
});
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});
},
/**
* Verify an auth string of the form name:hash
*/
verifyAuth: function (auth, callback) {
if (typeof callback !== "function") {
return;
}
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if (typeof auth !== "string") {
callback("Invalid auth string", null);
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return;
}
var split = auth.split(":");
if (split.length !== 2) {
callback("Invalid auth string", null);
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return;
}
var name = split[0];
var hash = split[1];
db.query("SELECT name,password,global_rank FROM `users` WHERE " +
"name=? and password=?", [name, hash],
function (err, rows) {
if (err) {
callback(err, null);
return;
}
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if (rows.length === 0) {
callback("Auth string does not match an existing user", null);
return;
}
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callback(null, {
name: rows[0].name,
hash: rows[0].password,
global_rank: rows[0].global_rank
});
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});
},
/**
* Change a user's password
*/
setPassword: function (name, pw, callback) {
if (typeof callback !== "function") {
callback = blackHole;
}
if (typeof name !== "string" || typeof pw !== "string") {
callback("Invalid username/password combination", null);
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return;
}
/* Passwords are capped at 100 characters to prevent a potential
denial of service vector through causing the server to hash
ridiculously long strings.
*/
pw = pw.substring(0, 100);
bcrypt.hash(pw, 10, function (err, hash) {
if (err) {
callback(err, null);
return;
}
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db.query("UPDATE `users` SET password=? WHERE name=?",
[hash, name],
function (err, result) {
callback(err, err ? null : true);
});
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});
},
/**
* Lookup a user's global rank
*/
getGlobalRank: function (name, callback) {
if (typeof callback !== "function") {
return;
}
if (typeof name !== "string") {
callback("Invalid username", null);
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return;
}
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if (!name) {
callback(null, -1);
return;
}
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db.query("SELECT global_rank FROM `users` WHERE name=?", [name],
function (err, rows) {
if (err) {
callback(err, null);
} else if (rows.length === 0) {
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callback(null, 0);
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} else {
callback(null, rows[0].global_rank);
}
});
},
/**
* Updates a user's global rank
*/
setGlobalRank: function (name, rank, callback) {
if (typeof callback !== "function") {
callback = blackHole;
}
if (typeof name !== "string") {
callback("Invalid username", null);
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return;
}
if (typeof rank !== "number") {
callback("Invalid rank", null);
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return;
}
db.query("UPDATE `users` SET global_rank=? WHERE name=?", [rank, name],
function (err, result) {
callback(err, err ? null : true);
});
},
/**
* Lookup multiple users' global rank in one query
*/
getGlobalRanks: function (names, callback) {
if (typeof callback !== "function") {
return;
}
if (!(names instanceof Array)) {
callback("Expected array of names, got " + typeof names, null);
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return;
}
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if (names.length === 0) {
return callback(null, []);
}
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var list = "(" + names.map(function () { return "?";}).join(",") + ")";
db.query("SELECT global_rank FROM `users` WHERE name IN " + list, names,
function (err, rows) {
if (err) {
callback(err, null);
} else if (rows.length === 0) {
callback(null, []);
} else {
callback(null, rows.map(function (x) { return x.global_rank; }));
}
});
},
/**
* Lookup a user's email
*/
getEmail: function (name, callback) {
if (typeof callback !== "function") {
return;
}
if (typeof name !== "string") {
callback("Invalid username", null);
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return;
}
db.query("SELECT email FROM `users` WHERE name=?", [name],
function (err, rows) {
if (err) {
callback(err, null);
} else if (rows.length === 0) {
callback("User does not exist", null);
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} else {
callback(null, rows[0].email);
}
});
},
/**
* Updates a user's email
*/
setEmail: function (name, email, callback) {
if (typeof callback !== "function") {
callback = blackHole;
}
if (typeof name !== "string") {
callback("Invalid username", null);
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return;
}
if (typeof email !== "string") {
callback("Invalid email", null);
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return;
}
db.query("UPDATE `users` SET email=? WHERE name=?", [email, name],
function (err, result) {
callback(err, err ? null : true);
});
},
/**
* Lookup a user's profile
*/
getProfile: function (name, callback) {
if (typeof callback !== "function") {
return;
}
if (typeof name !== "string") {
callback("Invalid username", null);
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return;
}
db.query("SELECT profile FROM `users` WHERE name=?", [name],
function (err, rows) {
if (err) {
callback(err, null);
} else if (rows.length === 0) {
callback("User does not exist", null);
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} else {
var userprof = {
image: "",
text: ""
};
if (rows[0].profile === "") {
callback(null, userprof);
return;
}
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try {
var profile = JSON.parse(rows[0].profile);
userprof.image = profile.image || "";
userprof.text = profile.text || "";
callback(null, userprof);
} catch (e) {
callback(e, null);
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}
}
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});
},
/**
* Updates a user's profile
*/
setProfile: function (name, profile, callback) {
if (typeof callback !== "function") {
callback = blackHole;
}
if (typeof name !== "string") {
callback("Invalid username", null);
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return;
}
if (typeof profile !== "object") {
callback("Invalid profile", null);
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return;
}
// Cast to string to guarantee string type
profile.image += "";
profile.text += "";
// Limit size
profile.image = profile.image.substring(0, 255);
profile.text = profile.text.substring(0, 255);
// Stringify the literal to guarantee I only get the keys I want
var profilejson = JSON.stringify({
image: profile.image,
text: profile.text
});
db.query("UPDATE `users` SET profile=? WHERE name=?", [profilejson, name],
function (err, result) {
callback(err, err ? null : true);
});
},
generatePasswordReset: function (ip, name, email, callback) {
if (typeof callback !== "function") {
return;
}
callback("generatePasswordReset is not implemented", null);
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},
recoverPassword: function (hash, callback) {
if (typeof callback !== "function") {
return;
}
callback("recoverPassword is not implemented", null);
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},
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/**
* Retrieve a list of channels owned by a user
*/
getChannels: function (name, callback) {
if (typeof callback !== "function") {
return;
}
db.query("SELECT * FROM `channels` WHERE owner=?", [name], callback);
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},
/**
* Retrieves all names registered from a given IP
*/
getAccounts: function (ip, callback) {
if (typeof callback !== "function") {
return;
}
db.query("SELECT name,global_rank FROM `users` WHERE `ip`=?", [ip],
callback);
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}
};