Refacto Oauht2

oauth2/oauth2.tf

@@ -3,22 +3,38 @@ locals {
   oauth2_labels = merge(var.labels, {
     "app.kubernetes.io/component" = "authentik-oauth2"
   })
+  cert_signing = var.cert_sign_secret_name != ""
+  signing_id   = local.cert_signing ? authentik_certificate_key_pair.name[0].id : data.authentik_certificate_key_pair.ca.id
 }
 
-resource "random_password" "client_id" {
-  length  = 32
-  special = false
+resource "kubectl_manifest" "secret_gen" {
+  yaml_body = <<-EOF
+    apiVersion: "secretgenerator.mittwald.de/v1alpha1"
+    kind: "StringSecret"
+    metadata:
+      name: "${local.app_slug}-oauth2"
+      namespace: "${var.namespace}"
+      labels: ${jsonencode(local.oauth2_labels)}
+      ownerReferences: ${jsonencode(var.owner_references)}
+    spec:
+      forceRegenerate: false
+      fields:
+      - fieldName: "client_id"
+        length: "32"
+  EOF
+}
+data "kubernetes_secret_v1" "secret_gen" {
+  metadata {
+    name      = kubectl_manifest.secret_gen.name
+    namespace = var.namespace
+  }
 }
-
 data "authentik_certificate_key_pair" "ca" {
   name = "authentik Self-signed Certificate"
 }
-
-data "authentik_scope_mapping" "oauth2" {
+data "authentik_property_mapping_provider_scope" "oauth2" {
   managed_list = [
-    "goauthentik.io/providers/oauth2/scope-email",
-    "goauthentik.io/providers/oauth2/scope-openid",
-    "goauthentik.io/providers/oauth2/scope-profile"
+    for scope in var.scopes : "goauthentik.io/providers/oauth2/${scope}"
   ]
 }
 data "authentik_flow" "default_authorization_flow" {
@@ -27,16 +43,50 @@ data "authentik_flow" "default_authorization_flow" {
 data "authentik_flow" "default_authentication_flow" {
   slug = "default-authentication-flow"
 }
+data "authentik_flow" "default_invalidation_flow" {
+  slug = "default-provider-invalidation-flow"
+}
+
+resource "authentik_group" "app_group" {
+  name       = local.app_slug
+  attributes = jsonencode({ "app_slug" = local.app_slug })
+}
+
+resource "authentik_group" "groups" {
+  for_each = var.group_mapping
+  name     = each.key
+  parent   = authentik_group.app_group.id
+  attributes = jsonencode({
+    "app_slug"       = local.app_slug
+    "gen_group_name" = each.value
+  })
+}
+
+data "kubernetes_secret_v1" "signing_cert" {
+  count = var.cert_sign_secret_name != "" ? 1 : 0
+  metadata {
+    name      = var.cert_sign_secret_name
+    namespace = var.namespace
+  }
+}
+
+resource "authentik_certificate_key_pair" "name" {
+  count            = local.cert_signing ? 1 : 0
+  name             = "${local.app_slug} Signing"
+  certificate_data = try(data.kubernetes_secret_v1.signing_cert[0].data, { "tls.crt" = "" })["tls.crt"]
+  key_data         = try(data.kubernetes_secret_v1.signing_cert[0].data, { "tls.key" = "" })["tls.key"]
+}
 
 resource "authentik_provider_oauth2" "oauth2" {
   name                = local.app_slug
-  client_id           = random_password.client_id.result
+  client_id           = data.kubernetes_secret_v1.secret_gen.data.client_id
   authentication_flow = data.authentik_flow.default_authentication_flow.id
   authorization_flow  = data.authentik_flow.default_authorization_flow.id
-  client_type         = "confidential"
+  invalidation_flow   = data.authentik_flow.default_invalidation_flow.id
+  client_type         = var.client_type
   sub_mode            = "user_username"
-  signing_key         = data.authentik_certificate_key_pair.ca.id
-  property_mappings   = data.authentik_scope_mapping.oauth2.ids
+  signing_key         = local.signing_id
+  property_mappings   = data.authentik_property_mapping_provider_scope.oauth2.ids
   redirect_uris = [
     "https://${var.redirect_path != "" ? "${var.dns_name}/${var.redirect_path}" : var.dns_name}"
   ]
@@ -49,15 +99,32 @@ data "kubernetes_ingress_v1" "authentik" {
   }
 }
 
-resource "kubernetes_secret" "oauth2_client_secret" {
-  metadata {
-    name      = "${local.app_slug}-oauth2"
-    namespace = var.namespace
-    labels    = local.oauth2_labels
-  }
-  data = {
-    oidc_endpoint = "https://${data.kubernetes_ingress_v1.authentik.spec[0].rule[0].host}/application/o/${local.app_slug}/"
-    client_id     = random_password.client_id.result
-    client_secret = authentik_provider_oauth2.oauth2.client_secret
-  }
+resource "kubectl_manifest" "oauth2_client_secret" {
+  force_new = true
+  yaml_body = <<-EOF
+    apiVersion: v1
+    kind: Secret
+    metadata:
+      name: "${local.app_slug}-oauth2"
+      namespace: "${var.namespace}"
+      labels: ${jsonencode(local.oauth2_labels)}
+      ownerReferences: ${jsonencode(var.owner_references)}
+    data:
+      oidc_endpoint: "${base64encode("https://${data.kubernetes_ingress_v1.authentik.spec[0].rule[0].host}/application/o/${local.app_slug}/")}"
+      client_id: "${base64encode(data.kubernetes_secret_v1.secret_gen.data.client_id)}"
+      client_secret: "${base64encode(authentik_provider_oauth2.oauth2.client_secret)}"
+  EOF
 }
+
+# resource "kubernetes_secret" "oauth2_client_secret" {
+#   metadata {
+#     name      = "${local.app_slug}-oauth2"
+#     namespace = var.namespace
+#     labels    = local.oauth2_labels
+#   }
+#   data = {
+#     oidc_endpoint = "https://${data.kubernetes_ingress_v1.authentik.spec[0].rule[0].host}/application/o/${local.app_slug}/"
+#     client_id     = data.kubernetes_secret_v1.secret_gen.data["client_id"]
+#     client_secret = authentik_provider_oauth2.oauth2.client_secret
+#   }
+# }

oauth2/outputs.tf

@@ -23,7 +23,7 @@ output "sso_token_url" {
 }
 
 output "client_id" {
-  value = random_password.client_id.result
+  value = data.kubernetes_secret_v1.secret_gen.data.client_id
 }
 
 output "client_secret" {
@@ -31,6 +31,6 @@ output "client_secret" {
 }
 
 output "oauth2_secret_name" {
-  value = kubernetes_secret.oauth2_client_secret.metadata[0].name
+  value = kubectl_manifest.oauth2_client_secret.name
 }
 

oauth2/providers.tf

@@ -1,5 +1,6 @@
 
 terraform {
+  required_version = ">= 1.0"
   required_providers {
     kubernetes = {
       source  = "hashicorp/kubernetes"
@@ -10,8 +11,8 @@ terraform {
       version = "~> 1.14.0"
     }
     authentik = {
-      source  = "goauthentik/authentik"
-      version = "~> 2023.5.0"
+      source  = "registry.terraform.io/goauthentik/authentik"
+      version = "~> 2024.10.0"
     }
   }
 }

oauth2/variables.tf

@@ -20,3 +20,36 @@ variable "redirect_path" {
   type    = string
   default = ""
 }
+variable "group_mapping" {
+  type = map(string)
+  default = {}
+  description = "Group mapping where key application group and value the generic group name"
+}
+variable "owner_references" {
+  type = list(object({}))
+  description = "Adding owner references"
+  default = []
+}
+variable "scopes" {
+  type = list(string)
+  description = "List of default scope allowed"
+  default = [
+    "scope-email",
+    "scope-openid",
+    "scope-profile",
+  ]
+}
+variable "client_type" {
+  type = string
+  description = "OAuth client type confidential / public(PKCE)"
+  default = "confidential"
+  validation {
+    condition     = contains(["confidential", "public"], var.client_type)
+    error_message = "Only empty confidential or public is allowed"
+  }
+}
+variable "cert_sign_secret_name" {
+  type = string
+  description = "The name of the secret for signing JWT (if empty use authentik default)"
+  default = ""
+}