httpcaddyfile: error on duplicate named_routes (#7800)

* fix: error on duplicate named_routes Fixes issue #7798 Validate named route names before inserting them into the named route map. This prevents later definitions from overwriting existing named routes and returns an error when a route name is defined more than once. * test: add test for duplicate named_routes

Rhul committed Jun 5, 2026 at 00:25 UTC 3b7bde8f25122a3a83ae0777e5bdce47f449e47d

2 files changed +21 -1

caddyconfig/httpcaddyfile/httptype.go

+5 -1

@@ -523,7 +523,11 @@ func (ServerType) extractNamedRoutes(

523 route.HandlersRaw = []json.RawMessage{caddyconfig.JSONModuleObject(handler, "handler", subroute.CaddyModule().ID.Name(), h.warnings)}

524 }

525

526 - namedRoutes[sb.block.GetKeysText()[0]] = &route

526 + key := sb.block.GetKeysText()[0]

527 + if _, exists := namedRoutes[key]; exists {

528 + return nil, fmt.Errorf("cannot have duplicate named_routes: %s", key)

529 + }

530 + namedRoutes[key] = &route

531 }

532 options["named_routes"] = namedRoutes

533

caddytest/integration/caddyfile_adapt/duplicate_named_route_challenge.caddyfiletest new

+16

@@ -0,0 +1,16 @@

1 +&(api) {

2 + header X-Version v1

3 + respond "API v1"

4 +}

5 +

6 +&(api) {

7 + header X-Version v2

8 + respond "API v2"

9 +}

10 +

11 +localhost {

12 + invoke api

13 +}

14 +

15 +----------

16 +cannot have duplicate named_routes: api