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clinch/db/migrate/20260607000002_seed_default_groups_and_migrate_admins.rb
Dan Milne 03dfdbd83a
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Default-deny access control with group flags and access enumeration
Replaces the implicit "empty allowed_groups means public" rule with
explicit default-deny across both OIDC and ForwardAuth. Adds two boolean
flags on Group — auto_assign (Keycloak-style auto-join on user create)
and admin (members can reach the admin panel) — and drops the
users.admin column entirely. Adds "Users with access" and "Accessible
applications" panels with via-group badges on the application/user show
pages.

BEHAVIOR CHANGE: a ForwardAuth app with no allowed_groups previously
bypassed authentication entirely; it now returns 403 like any other
unauthorized request. The data migration seeds an "everyone" group and
attaches it to all previously group-less apps to preserve behavior on
existing installs. An "admins" group is seeded and backfilled from any
user with the old admin column.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-06-07 15:53:27 +10:00

45 lines
1.3 KiB
Ruby

class SeedDefaultGroupsAndMigrateAdmins < ActiveRecord::Migration[8.1]
# Data migration: seed "everyone" (auto_assign) and "admins" (admin) groups,
# backfill memberships from existing data, attach "everyone" to previously
# group-less applications. Idempotent.
#
# Must run before RemoveAdminFromUsers, because it reads the legacy
# users.admin column.
def up
unless Group.exists?(auto_assign: true)
everyone = Group.create!(
name: "everyone",
description: "Auto-assigned to new users. Safe to rename or remove.",
auto_assign: true
)
User.where(status: 0).find_each do |u|
UserGroup.find_or_create_by!(user_id: u.id, group_id: everyone.id)
end
Application.left_joins(:application_groups)
.where(application_groups: {id: nil})
.find_each do |app|
ApplicationGroup.find_or_create_by!(application_id: app.id, group_id: everyone.id)
end
end
unless Group.exists?(admin: true)
admins = Group.create!(
name: "admins",
description: "Members can access the admin panel.",
admin: true
)
User.where(admin: true).find_each do |u|
UserGroup.find_or_create_by!(user_id: u.id, group_id: admins.id)
end
end
end
def down
Group.where(name: ["everyone", "admins"]).destroy_all
end
end