app/controllers/user_sessions_controller.rb

   1 class UserSessionsController < ApplicationController
   2   before_filter :login_required, :only => [ :destroy ]
   3
   4   skip_before_filter :uncamelcase_params_hash_keys
   5   skip_before_filter :find_object_by_uuid
   6
   7   respond_to :html
   8
   9   # omniauth callback method
  10   def create
  11     omniauth = env['omniauth.auth']
  12     #logger.debug "+++ #{omniauth}"
  13
  14     identity_url_ok = (omniauth['info']['identity_url'].length > 0) rescue false
  15     unless identity_url_ok
  16       # Whoa. This should never happen.
  17
  18       @title = "UserSessionsController.create: omniauth object missing/invalid"
  19       @body = "omniauth.pretty_inspect():\n\n#{omniauth.pretty_inspect()}"
  20
  21       view_context.fatal_error(@title,@body)
  22       return redirect_to openid_login_error_url
  23     end
  24
  25     user = User.find_by_identity_url(omniauth['info']['identity_url'])
  26     if not user
  27       # New user registration
  28       user = User.create!(:email => omniauth['info']['email'],
  29                           :first_name => omniauth['info']['first_name'],
  30                           :last_name => omniauth['info']['last_name'],
  31                           :identity_url => omniauth['info']['identity_url'])
  32     else
  33       user.email = omniauth['info']['email']
  34       user.first_name = omniauth['info']['first_name']
  35       user.last_name = omniauth['info']['last_name']
  36       user.save
  37     end
  38
  39     omniauth.delete('extra')
  40
  41     # Give the authenticated user a cookie for direct API access
  42     session[:user_id] = user.id
  43     session[:user_uuid] = user.uuid
  44     session[:api_client_uuid] = nil
  45     session[:api_client_trusted] = true # full permission to see user's secrets
  46
  47     @redirect_to = root_path
  48     if session.has_key? :return_to
  49       return send_api_token_to(session.delete :return_to)
  50     end
  51     redirect_to @redirect_to
  52   end
  53
  54   # Omniauth failure callback
  55   def failure
  56     flash[:notice] = params[:message]
  57   end
  58
  59   # logout - Clear our rack session BUT essentially redirect to the provider
  60   # to clean up the Devise session from there too !
  61   def logout
  62     session[:user_id] = nil
  63
  64     flash[:notice] = 'You have logged off'
  65     redirect_to "#{CUSTOM_PROVIDER_URL}/users/sign_out?redirect_uri=#{root_url}"
  66   end
  67
  68   # login - Just bounce to /auth/joshid. The only purpose of this function is
  69   # to save the redirect_to parameter (if it exists; see the application
  70   # controller). /auth/joshid bypasses the application controller.
  71   def login
  72     if current_user and params[:return_to]
  73       # Already logged in; just need to send a token to the requesting
  74       # API client.
  75       #
  76       # FIXME: if current_user has never authorized this app before,
  77       # ask for confirmation here!
  78
  79       send_api_token_to(params[:return_to])
  80     else
  81       # TODO: make joshid propagate return_to as a GET parameter, and
  82       # use that GET parameter instead of session[] when redirecting
  83       # in create().  Using session[] is inappropriate: completing a
  84       # login in browser window A can cause a token to be sent to a
  85       # different API client who has requested a token in window B.
  86
  87       session[:return_to] = params[:return_to]
  88       redirect_to "/auth/joshid"
  89     end
  90   end
  91
  92   def send_api_token_to(callback_url)
  93     # Give the API client a token for making API calls on behalf of
  94     # the authenticated user
  95
  96     # Stub: automatically register all new API clients
  97     api_client_url_prefix = callback_url.match(%r{^.*?://[^/]+})[0] + '/'
  98     api_client = ApiClient.find_or_create_by_url_prefix(api_client_url_prefix)
  99
 100     api_client_auth = ApiClientAuthorization.
 101       new(user: user,
 102           api_client: api_client,
 103           created_by_ip_address: Thread.current[:remote_ip])
 104     api_client_auth.save!
 105
 106     if callback_url.index('?')
 107       callback_url << '&'
 108     else
 109       callback_url << '?'
 110     end
 111     callback_url << 'api_token=' << api_client_auth.api_token
 112     redirect_to callback_url
 113   end
 114 end