Warden::Line

This gem is created for use LINE ID Token as warden strategies to use in LIFF application.

Installation

Add this line to your application's Gemfile:

gem 'warden-line'

And then execute:

$ bundle install

Or install it yourself as:

$ gem install warden-line

Usage

Currently, the workable version is tested with rails_warden gem.

# config/initialize/warden.rb

Rails.configuration.middleware.use RailsWarden::Manager do |manager|
  manager.failure_app = proc do |env|
    [
      401,
      { 'Content-Type' => 'application/json' },
      [{ error: 'Unauthorized', code: 401, reason: env['warden'].message }.to_json]
    ]
  end
  manager.default_strategies :line
  manager.line_client_id = ENV['LINE_CLIENT_ID']
end

# Rails Warden will use `id` to find user, but we want plain hash
module Warden
  class SessionSerializer
    def serialize(user)
      user
    end

    def deserialize(key)
      key
    end
  end
end

Create a plain object as model for decoded user.

# app/models/user.rb

class User
  include ActiveModel::Model
  include ActiveModel::Attributes

  attribute :sub, :string
  attribute :exp, :integer
  attribute :name, :string
  attribute :picture, :string
  attribute :email, :string

  def id
    sub
  end

  def expired_at
    @expired_at ||= Time.zone.at(exp)
  rescue TypeError
    Time.zone.now
  end

  def expired?
    Time.zone.now >= expired_at
  end
end

Implement a controller to handle the session creation for sign-in and sign-out.

# app/controller/sessions.rb

class SessionsController < ActionController::Metal
  include Authenticatable

  def authenticate
    # Ensure clear expired session
    request.env['warden'].logout
    request.env['warden'].authenticate!

    @user = User.new(request.env['warden'].user.slice(*User.attribute_names))
    # Post login actions
  end
end

Roadmap

• [x] Strategy for LINE ID Token
• [ ] Rails Support
  • [ ] Remove rails_warden dependency
  • [ ] Helpers similar to devise
• [ ] User object

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/elct9620/warden-line. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the code of conduct.

Code of Conduct

Everyone interacting in the Warden::Line project's codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.