Add simple auth logic for login/logout

src/simpleauth.js

@@ -0,0 +1,52 @@
+'use strict';
+
+exports = module.exports = {
+    login: login,
+    logout: logout
+};
+
+var assert = require('assert'),
+    debug = require('debug')('box:simpleauth'),
+    user = require('./user.js'),
+    tokendb = require('./tokendb.js'),
+    clientdb = require('./clientdb.js');
+
+function login(clientId, username, password, callback) {
+    assert.strictEqual(typeof clientId, 'string');
+    assert.strictEqual(typeof username, 'string');
+    assert.strictEqual(typeof password, 'string');
+    assert.strictEqual(typeof callback, 'function');
+
+    debug('login: client %s and user %s', clientId, username);
+
+    clientdb.get(clientId, function (error, clientObject) {
+        if (error) return callback(error);
+
+        user.verify(username, password, function (error, userObject) {
+            if (error) return callback(error);
+
+            var accessToken = tokendb.generateToken();
+            var expires = Date.now() + 24 * 60 * 60 * 1000; // 1 day
+
+            tokendb.add(accessToken, tokendb.PREFIX_USER + userObject.id, clientId, expires, clientObject.scope, function (error) {
+                if (error) return callback(error);
+
+                debug('login: new access token for client %s and user %s: %s', clientId, username, accessToken);
+
+                callback(null, { accessToken: accessToken, user: userObject });
+            });
+        });
+    });
+}
+
+function logout(accessToken, callback) {
+    assert.strictEqual(typeof accessToken, 'string');
+    assert.strictEqual(typeof callback, 'function');
+
+    debug('logout: %s', accessToken);
+
+    tokendb.del(accessToken, function (error) {
+        if (error) return callback(error);
+        callback(null);
+    });
+}