Files
once-campfire/test/controllers/users/push_subscriptions_controller_test.rb
T
Jeremy Daer 7d5bb50b9b Address push-SSRF review: defer DNS off enqueue path, disable proxy on pinned path, revalidate on re-registration
- Resolve the guarded endpoint IP lazily inside WebPush::Notification#deliver
  (on the bounded delivery worker) instead of eagerly when the notification is
  built on the serial enqueue path, so a slow resolver can't stall the push job
  before any delivery starts. resolved_endpoint_ip only reads the already-loaded
  endpoint attribute, so it is safe off the AR connection.
- Pin the delivery socket with an explicit nil proxy address so http_proxy/
  https_proxy can't route the request through a proxy that re-resolves the host
  and defeats the ipaddr pin.
- Revalidate an existing subscription on re-registration so a row predating
  endpoint validation gets the same 422 as a fresh create instead of being kept
  alive by touch.
- Regression tests: resolution deferred to delivery, pin survives proxy env,
  legacy invalid row rejected with 422.
2026-08-26 00:03:15 -07:00

78 lines
3.0 KiB
Ruby

require "test_helper"
class Users::PushSubscriptionsControllerTest < ActionDispatch::IntegrationTest
setup do
sign_in :david
stub_web_push_dns_resolution
end
test "create new push subscription" do
subscription_params = { "endpoint" => "https://fcm.googleapis.com/fcm/send/abc123", "p256dh_key" => "123", "auth_key" => "456" }
post user_push_subscriptions_url,
params: { push_subscription: subscription_params }, headers: { "HTTP_USER_AGENT" => "Mozilla/5.0" }
assert_response :ok
assert_equal subscription_params, users(:david).push_subscriptions.last.attributes.slice("endpoint", "p256dh_key", "auth_key")
assert_equal "Mozilla/5.0", users(:david).push_subscriptions.last.user_agent
end
test "touch existing subscription" do
assert_no_difference -> { users(:david).push_subscriptions.count } do
assert_changes -> { push_subscriptions(:david_chrome).reload.updated_at } do
post user_push_subscriptions_url(params: {
push_subscription: push_subscriptions(:david_chrome).attributes.slice("endpoint", "p256dh_key", "auth_key")
})
end
end
assert_response :ok
end
test "rejects subscription with non-permitted endpoint" do
subscription_params = { "endpoint" => "https://attacker.example.com/steal", "p256dh_key" => "123", "auth_key" => "456" }
assert_no_difference -> { Push::Subscription.count } do
post user_push_subscriptions_url, params: { push_subscription: subscription_params }
end
assert_response :unprocessable_entity
end
test "rejects subscription with endpoint resolving to a private IP" do
stub_dns_resolution("169.254.169.254")
subscription_params = { "endpoint" => "https://fcm.googleapis.com/fcm/send/abc123", "p256dh_key" => "123", "auth_key" => "456" }
assert_no_difference -> { Push::Subscription.count } do
post user_push_subscriptions_url, params: { push_subscription: subscription_params }
end
assert_response :unprocessable_entity
end
test "re-registering a legacy invalid subscription is rejected with 422" do
# A row that predates endpoint validation (saved without validation, as a
# sink planted before this shipped could be). Re-POSTing its params must hit
# the same 422 as a fresh create, not be kept alive by touch.
legacy = users(:david).push_subscriptions.build \
endpoint: "https://attacker.example.com/steal", p256dh_key: "123", auth_key: "456"
legacy.save!(validate: false)
assert_no_difference -> { Push::Subscription.count } do
post user_push_subscriptions_url, params: {
push_subscription: { endpoint: "https://attacker.example.com/steal", p256dh_key: "123", auth_key: "456" }
}
end
assert_response :unprocessable_entity
end
test "destroy a push subscription via dev mode" do
assert_difference -> { Push::Subscription.count }, -1 do
delete user_push_subscription_url(push_subscriptions(:david_chrome))
assert_redirected_to user_push_subscriptions_url
end
end
end