Files
coder/coderd/rbac
Kyle Carberry 013f028e55 feat: Add workspace application support (#1773)
* feat: Add app support

This adds apps as a property to a workspace agent.

The resource is added to the Terraform provider here:
https://github.com/coder/terraform-provider-coder/pull/17

Apps will be opened in the dashboard or via the CLI
with `coder open <name>`. If `command` is specified, a
terminal will appear locally and in the web. If `target`
is specified, the browser will open to an exposed instance
of that target.

* Compare fields in apps test

* Update Terraform provider to use relative path

* Add some basic structure for routing

* chore: Remove interface from coderd and lift API surface

Abstracting coderd into an interface added misdirection because
the interface was never intended to be fulfilled outside of a single
implementation.

This lifts the abstraction, and attaches all handlers to a root struct
named `*coderd.API`.

* Add basic proxy logic

* Add proxying based on path

* Add app proxying for wildcards

* Add wsconncache

* fix: Race when writing to a closed pipe

This is such an intermittent race it's difficult to track,
but regardless this is an improvement to the code.

* fix: Race when writing to a closed pipe

This is such an intermittent race it's difficult to track,
but regardless this is an improvement to the code.

* fix: Race when writing to a closed pipe

This is such an intermittent race it's difficult to track,
but regardless this is an improvement to the code.

* fix: Race when writing to a closed pipe

This is such an intermittent race it's difficult to track,
but regardless this is an improvement to the code.

* Add workspace route proxying endpoint

- Makes the workspace conn cache concurrency-safe
- Reduces unnecessary open checks in `peer.Channel`
- Fixes the use of a temporary context when dialing a workspace agent

* Add embed errors

* chore: Refactor site to improve testing

It was difficult to develop this package due to the
embed build tag being mandatory on the tests. The logic
to test doesn't require any embedded files.

* Add test for error handler

* Remove unused access url

* Add RBAC tests

* Fix dial agent syntax

* Fix linting errors

* Fix gen

* Fix icon required

* Adjust migration number

* Fix proxy error status code

* Fix empty db lookup
2022-06-04 15:13:37 -05:00
..

Authz

Package authz implements AuthoriZation for Coder.

Overview

Authorization defines what permission a subject has to perform actions to objects:

  • Permission is binary: yes (allowed) or no (denied).
  • Subject in this case is anything that implements interface authz.Subject.
  • Action here is an enumerated list of actions, but we stick to Create, Read, Update, and Delete here.
  • Object here is anything that implements authz.Object.

Permission Structure

A permission is a rule that grants or denies access for a subject to perform an action on a object. A permission is always applied at a given level:

  • site level applies to all objects in a given Coder deployment.
  • org level applies to all objects that have an organization owner (org_owner)
  • user level applies to all objects that have an owner with the same ID as the subject.

Permissions at a higher level always override permissions at a lower level.

The effect of a permission can be:

  • positive (allows)
  • negative (denies)
  • abstain (neither allows or denies, not applicable)

Negative permissions always override positive permissions at the same level. Both negative and positive permissions override abstain at the same level.

This can be represented by the following truth table, where Y represents positive, N represents negative, and _ represents abstain:

Action Positive Negative Result
read Y _ Y
read Y N N
read _ _ _
read _ N Y

Permission Representation

Permissions are represented in string format as <sign>?<level>.<object>.<id>.<action>, where:

  • negated can be either + or -. If it is omitted, sign is assumed to be +.
  • level is either site, org, or user.
  • object is any valid resource type.
  • id is any valid UUID v4.
  • action is create, read, modify, or delete.

Example Permissions

  • +site.*.*.read: allowed to perform the read action against all objects of type app in a given Coder deployment.
  • -user.workspace.*.create: user is not allowed to create workspaces.

Roles

A role is a set of permissions. When evaluating a role's permission to form an action, all the relevant permissions for the role are combined at each level. Permissions at a higher level override permissions at a lower level.

The following table shows the per-level role evaluation. Y indicates that the role provides positive permissions, N indicates the role provides negative permissions, and _ indicates the role does not provide positive or negative permissions. YN_ indicates that the value in the cell does not matter for the access result.

Role (example) Site Org User Result
site-admin Y YN_ YN_ Y
no-permission N YN_ YN_ N
org-admin _ Y YN_ Y
non-org-member _ N YN_ N
user _ _ Y Y
_ _ N N
unauthenticated _ _ _ N