giz

"You can't trust code that you did not totally create yourself." --Ken Thompson

giz is a bunch of auth functions for web applications.

Current status of the project

The current version of giz, v0.3.1, is considered to be somewhat stable and somewhat complete. Suggestions and patches are welcome. Future changes planned are:

• Add annotated source code.

Installation

The dependencies of giz are two:

• bcryptjs, which is used to hash passwords and password recovery tokens.
• redis, which is used as the default datastore.

To install, type npm i giz.

giz should work with any version of node. However, if you use the default db (redis), you'll need 0.10.0 or newer, plus a redis server available.

Usage

Functions

• giz.auth: takes a session token and a callback. If successful, the callback receives as its second argument an object with the form {id: ..., pass: ...}.
• giz.logout: takes a session token and a callback.
• giz.login: takes an user, a password and a callback. If successful, the callback receives as its second argument a session.
• giz.signup: takes an user, a password and a callback.
• giz.signlog: takes an user, a password and a callback. It attempts to signup the user and then immediately log them in.
• giz.recover: takes an user and a callback. If successful, the callback receives as its second argument a token for resetting the user's password.
• giz.reset: takes an user, a password recovery token (generated with giz.recover), a new password and a callback.
• giz.destroy: takes an user and a callback. Deletes the user.

Config & using a different db

The keys used by giz are: users:ID, session:ID and token:ID (for changing password). First is hash, other two are strings. First one only is {password: PASSEQUIVALENT}.

giz.config is an object that accepts the following keys:

• giz.config.expires: the number of seconds of inactivity before a token or session expires. By default this value is 3600.
• giz.config.redis: if you want giz to use redis by default and to create its own connection, this should be an array of the arguments you want to pass to redis.createClient. By default this value is an empty array.

You can also pass an existing redis client to giz, simply by setting giz.redis = yourRedisClient.

If you want to avoid using redis altogether (or doing it in your own way), you need to override the six functions in giz.db - all of them are used from all parts of the code, except for giz.db.init which is used by the other functions in giz.db. These functions are quite straightforward, comprising about 25 lines in total. If you need help implementing your own version of these functions, please open an issue and I will be glad to help you.

Source code

The complete source code is contained in giz.js. It is about 170 lines long.

Annotated source code will be forthcoming when the library stabilizes.

License

giz is written by Federico Pereiro (fpereiro@gmail.com) and released into the public domain.