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terraform-authentik/modules/authentik/variables.tf
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unkinben 2b39450ae2
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Set OAuth2 grant_types so authorization_code login works
## Why

All Authentik OIDC logins (ArgoCD, Grafana, Rancher, LiteLLM, NetBox) fail
with `invalid_request` / "The request is otherwise malformed". Authentik
2026.5 added an explicit `grant_types` allow-list to the OAuth2 provider
(model default = empty list). Our module never set it, so every provider has
`grant_types = []`, and `authorize.py` rejects the authorization_code grant
(`if self.grant_type not in self.provider.grant_types`) before any user auth.

## Change

- modules/authentik: add a `grant_types` field to the `providers_oauth2`
  variable, defaulting to `["authorization_code", "refresh_token"]` (the
  standard confidential web-app set), and wire it into
  `authentik_provider_oauth2`.

## Plan

`0 to add, 5 to change, 0 to destroy` — each existing oauth2 provider's
`grant_types` goes `[] -> ["authorization_code", "refresh_token"]`; no other
attributes change. Baseline plan (pre-change) was clean (no netbox/state drift).

Claude-Session: https://claude.ai/code/session_015ur3i7D2azsMAWTSVABApv
2026-07-28 22:09:06 +10:00

117 lines
4.6 KiB
Terraform

variable "groups" {
type = map(object({
name = string
is_superuser = optional(bool, false)
# PKs of existing parent groups. These must be literal group PKs, not keys
# into this map: authentik_group cannot reference itself.
parents = optional(list(string), null)
attributes = optional(map(string), {})
}))
default = {}
}
# Two-tier RBAC. Permission groups (akP-*) are the atomic units mapped to app
# roles and bound to applications for access. Role groups (akR-*) are what users
# are assigned to; each nests permission groups via `parents`, so a member of a
# role is an effective member of every permission it grants (Authentik membership
# propagates child -> parent). Split into two variables/resources so roles can
# reference permission group ids without the authentik_group self-reference error.
# The group name is the map key (the config filename); no `name` field needed.
variable "permission_groups" {
type = map(object({
# slug of the oauth2 application this permission grants *access* to; when set,
# a policy binding is created gating that app to this group (and its children).
application = optional(string, null)
attributes = optional(map(string), {})
}))
default = {}
}
variable "role_groups" {
type = map(object({
# keys into var.permission_groups that this role nests (becomes its parents).
permissions = optional(list(string), [])
is_superuser = optional(bool, false)
attributes = optional(map(string), {})
}))
default = {}
}
variable "providers_saml" {
type = map(object({
name = string
authorization_flow = string
invalidation_flow = string
acs_url = string
sp_binding = optional(string, "redirect")
audience = optional(string, "")
name_id_mapping = optional(string, null)
signing_kp = optional(string, null)
}))
default = {}
}
variable "providers_oauth2" {
type = map(object({
name = string
authorization_flow = string # flow slug, resolved to id via data.authentik_flow
invalidation_flow = string # flow slug, resolved to id via data.authentik_flow
client_type = optional(string, "confidential")
client_id = string
# client_secret is never committed. Point at a Vault kv-v2 secret whose
# `client_secret` key holds the value (seeded out of band); TF reads it.
client_secret_vault = optional(object({
mount = string
path = string
}), null)
# Managed identifiers of scope property mappings (e.g.
# goauthentik.io/providers/oauth2/scope-openid). Resolved to ids.
scope_mappings = optional(list(string), [])
# OAuth2 grant types the provider permits. Authentik 2026.5 added this as an
# explicit allow-list on the provider (models default = empty); an empty list
# rejects every authorize request with "invalid_request / The request is
# otherwise malformed". Default to the standard confidential web-app set so
# authorization_code (login) and refresh_token (offline access) work.
grant_types = optional(list(string), ["authorization_code", "refresh_token"])
# allowed_redirect_uris is list(map(string)); the API always stores a
# redirect_uri_type key, so it must be set here or every plan drifts.
redirect_uris = optional(list(object({
matching_mode = optional(string, "strict")
url = string
redirect_uri_type = optional(string, "authorization")
})), [])
signing_key = optional(string, null)
access_token_validity = optional(string, "minutes=10")
# Optional app-role claim computed from (hierarchical) group membership: emit
# `claim` = the first matching rule's role, else `default`. The app requests
# `claim` as a scope and reads it (e.g. LiteLLM GENERIC_USER_ROLE_ATTRIBUTE).
# rules are evaluated in order, so list highest privilege first.
role_mappings = optional(object({
claim = string
default = string
rules = list(object({
group = string # permission group name (akP-*)
role = string # app role value
}))
}), null)
}))
default = {}
}
variable "providers_ldap" {
type = map(object({
name = string
bind_flow = string
unbind_flow = string
base_dn = string
certificate = optional(string, null)
tls_server_name = optional(string, null)
uid_start_number = optional(number, 2000)
gid_start_number = optional(number, 4000)
search_mode = optional(string, "direct")
bind_mode = optional(string, "direct")
mfa_support = optional(bool, true)
}))
default = {}
}