actix-web-grants

Extension for actix-web to validate user permissions.

To check user access to specific services, you can use built-in proc-macro, PermissionGuard or manual.

The library can also be integrated with third-party solutions (like actix-web-httpauth).

How to use

Declare your own permission extractor

The easiest way is to declare a function with the following signature (trait is already implemented for such Fn):

Add middleware to your application using the extractor defined in step 1

Steps 1 and 2 can be replaced by custom middleware or integration with another libraries. Take a look at an jwt-httpauth example

Protect your endpoints in any convenient way from the examples below:

Example of `proc-macro` way protection

Example of ABAC-like protection and custom permission type

Here is an example using the type and secure attributes. But these are independent features.

secure allows you to include some checks in the macro based on function params.

type allows you to use a custom type for the roles and permissions (then the middleware needs to be configured). Take a look at an enum-role example

Example of `Guard` way protection

Example of custom fallback endpoint for `Scope` with `Guard`

Since Guard is intended only for routing, if the user doesn't have permissions, it returns a 404 HTTP code. But you can override the behavior like this:

When Guard lets you in the Scope (meaning you have "ROLE_ADMIN_ACCESS"), the redirect will be unreachable for you. Even if you will request /admin/some_undefined_page.

Note: regex is a Path variable containing passed link.