fix(gateway): allow CAR trustless requests with path

Author: hacdias

gateway/gateway_test.go

@@ -676,8 +676,9 @@ func TestIpfsTrustlessMode(t *testing.T) {
 	trustlessTests := func(t *testing.T, host string) {
 		doIpfsCidRequests(t, trustlessFormats, host, http.StatusOK)
 		doIpfsCidRequests(t, trustedFormats, host, http.StatusNotAcceptable)
-		doIpfsCidPathRequests(t, trustlessFormats, host, http.StatusNotAcceptable)
 		doIpfsCidPathRequests(t, trustedFormats, host, http.StatusNotAcceptable)
+		doIpfsCidPathRequests(t, []string{"raw"}, host, http.StatusNotAcceptable)
+		doIpfsCidPathRequests(t, []string{"car"}, host, http.StatusOK)
 	}
 
 	t.Run("Explicit Trustless Gateway", func(t *testing.T) {

gateway/handler.go

@@ -331,7 +331,7 @@ func (i *handler) isTrustlessRequest(contentPath ipath.Path, responseFormat stri
 	// Only allow "/{#1}/{#2}"-like paths.
 	trimmedPath := strings.Trim(contentPath.String(), "/")
 	pathComponents := strings.Split(trimmedPath, "/")
-	if len(pathComponents) != 2 {
+	if responseFormat != carResponseFormat && len(pathComponents) != 2 {
 		return false
 	}