Version: 7.x (Current)

Authorization service

How to use#

The authorization service is responsible for authorizing a route to request certain resources.

This service exposes an /auth endpoint that, once that you have provided a configuration, handles the access to a specific combination of route and method.

Request#

The request at the service should have:

  • Original-Request-Uri required header, that specifies the request path to check acl;
  • Original-Request-Method required header, that specifies the request method to check acl;
  • Authentication optional header, to authenticate logged user calling the api;
  • Client-Type optional header, to handle client type in acl expression;
  • isbackoffice optional header, to handle isbackoffice parameters in acl expression.

The authorization service proxies the request and all the headers specified in HEADERS_TO_PROXY env variables to an url (set by USERINFO_URL) and waits for the the url to respond with the user data in json, or with an http error or an empty body, in case the user is not logged.

The authorization service calls a service, that should handle user authentication and returns logged user body. Request timeout is set to 1 minute. The user structure must contains:

  • groups: a list of groups
  • a unique identifier of the user (default sub but configurable through CUSTOM_USER_ID_KEY). User id cannot be empty.

Headers set by /auth#

  • mia-allowed: set to 0 or 1. 0 -> not allowed. 1 -> allowed
  • mia-userid: if the api is called by logged user, it is filled with user id (customizable through CUSTOM_USER_ID_KEY). Otherwise it is empty.
  • mia-groups: if the api is called by logged user, it is filled with comma separated list of user groups. Otherwise it is empty.
  • mia-userproperties: it is possible to set into USER_PROPERTIES_TO_PROXY a comma separated list of user properties to evaluate acl expressions.

Strict Mode enabled#

By default the authorization-service is in strict mode.

In this mode, the response could be:

  • 200 with mia-allowed header set to 1: if user has access to the resource;
  • 200 with mia-allowed header set to 0: if resource is not found in authorization-service configuration;
  • 401 with mia-allowed header set to 0: if access to the resource is requested without a logged user;
  • 403 with mia-allowed header set to 0: if user request aims at accessing a resource which does not have enough permissions.

Strict mode disabled#

Into this mode, authorization-service always respond 200 with mia-allowed set to 0 if the user does not have permission to access the resource or 1 if it has the permission.