// Copyright 2015 The go-ethereum Authors // This file is part of the go-ethereum library. // // The go-ethereum library is free software: you can redistribute it and/or modify // it under the terms of the GNU Lesser General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // The go-ethereum library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public License // along with the go-ethereum library. If not, see . package nat import ( "fmt" "io" "net" "net/http" "os" "runtime" "strings" "testing" "github.com/huin/goupnp/httpu" ) func TestUPNP_DDWRT(t *testing.T) { if runtime.GOOS == "windows" { t.Skipf("disabled to avoid firewall prompt") } dev := &fakeIGD{ t: t, ssdpResp: "HTTP/1.1 200 OK\r\n" + "Cache-Control: max-age=300\r\n" + "Date: Sun, 10 May 2015 10:05:33 GMT\r\n" + "Ext: \r\n" + "Location: http://{{listenAddr}}/InternetGatewayDevice.xml\r\n" + "Server: POSIX UPnP/1.0 DD-WRT Linux/V24\r\n" + "ST: urn:schemas-upnp-org:device:WANConnectionDevice:1\r\n" + "USN: uuid:CB2471CC-CF2E-9795-8D9C-E87B34C16800::urn:schemas-upnp-org:device:WANConnectionDevice:1\r\n" + "\r\n", httpResps: map[string]string{ "GET /InternetGatewayDevice.xml": ` 1 0 urn:schemas-upnp-org:device:InternetGatewayDevice:1 DD-WRT http://www.dd-wrt.com Gateway Asus RT-N16:DD-WRT Asus RT-N16 V24 0000001 http://www.dd-wrt.com uuid:A13AB4C3-3A14-E386-DE6A-EFEA923A06FE urn:schemas-upnp-org:service:Layer3Forwarding:1 urn:upnp-org:serviceId:L3Forwarding1 /x_layer3forwarding.xml /control?Layer3Forwarding /event?Layer3Forwarding urn:schemas-upnp-org:device:WANDevice:1 WANDevice DD-WRT http://www.dd-wrt.com Gateway router http://www.dd-wrt.com uuid:48FD569B-F9A9-96AE-4EE6-EB403D3DB91A urn:schemas-upnp-org:service:WANCommonInterfaceConfig:1 urn:upnp-org:serviceId:WANCommonIFC1 /x_wancommoninterfaceconfig.xml /control?WANCommonInterfaceConfig /event?WANCommonInterfaceConfig urn:schemas-upnp-org:device:WANConnectionDevice:1 WAN Connection Device DD-WRT http://www.dd-wrt.com Gateway router http://www.dd-wrt.com uuid:CB2471CC-CF2E-9795-8D9C-E87B34C16800 urn:schemas-upnp-org:service:WANIPConnection:1 urn:upnp-org:serviceId:WANIPConn1 /x_wanipconnection.xml /control?WANIPConnection /event?WANIPConnection urn:schemas-upnp-org:device:LANDevice:1 LANDevice DD-WRT http://www.dd-wrt.com Gateway router http://www.dd-wrt.com uuid:04021998-3B35-2BDB-7B3C-99DA4435DA09 urn:schemas-upnp-org:service:LANHostConfigManagement:1 urn:upnp-org:serviceId:LANHostCfg1 /x_lanhostconfigmanagement.xml /control?LANHostConfigManagement /event?LANHostConfigManagement http://{{listenAddr}} `, // The response to our GetNATRSIPStatus call. This // particular implementation has a bug where the elements // inside u:GetNATRSIPStatusResponse are not properly // namespaced. "POST /control?WANIPConnection": ` 0 1 `, }, } if err := dev.listen(); err != nil { t.Skipf("cannot listen: %v", err) } dev.serve() defer dev.close() // Attempt to discover the fake device. discovered := discoverUPnP() if discovered == nil { if os.Getenv("CI") != "" { t.Fatalf("not discovered") } else { t.Skipf("UPnP not discovered (known issue, see https://github.com/ethereum/go-ethereum/issues/21476)") } } upnp, _ := discovered.(*upnp) if upnp.service != "IGDv1-IP1" { t.Errorf("upnp.service mismatch: got %q, want %q", upnp.service, "IGDv1-IP1") } wantURL := "http://" + dev.listener.Addr().String() + "/InternetGatewayDevice.xml" if upnp.dev.URLBaseStr != wantURL { t.Errorf("upnp.dev.URLBaseStr mismatch: got %q, want %q", upnp.dev.URLBaseStr, wantURL) } } // fakeIGD presents itself as a discoverable UPnP device which sends // canned responses to HTTPU and HTTP requests. type fakeIGD struct { t *testing.T // for logging listener net.Listener mcastListener *net.UDPConn // This should be a complete HTTP response (including headers). // It is sent as the response to any sspd packet. Any occurrence // of "{{listenAddr}}" is replaced with the actual TCP listen // address of the HTTP server. ssdpResp string // This one should contain XML payloads for all requests // performed. The keys contain method and path, e.g. "GET /foo/bar". // As with ssdpResp, "{{listenAddr}}" is replaced with the TCP // listen address. httpResps map[string]string } // httpu.Handler func (dev *fakeIGD) ServeMessage(r *http.Request) { dev.t.Logf(`HTTPU request %s %s`, r.Method, r.RequestURI) conn, err := net.Dial("udp4", r.RemoteAddr) if err != nil { fmt.Printf("reply Dial error: %v", err) return } defer conn.Close() io.WriteString(conn, dev.replaceListenAddr(dev.ssdpResp)) } // http.Handler func (dev *fakeIGD) ServeHTTP(w http.ResponseWriter, r *http.Request) { if resp, ok := dev.httpResps[r.Method+" "+r.RequestURI]; ok { dev.t.Logf(`HTTP request "%s %s" --> %d`, r.Method, r.RequestURI, 200) io.WriteString(w, dev.replaceListenAddr(resp)) } else { dev.t.Logf(`HTTP request "%s %s" --> %d`, r.Method, r.RequestURI, 404) w.WriteHeader(http.StatusNotFound) } } func (dev *fakeIGD) replaceListenAddr(resp string) string { return strings.ReplaceAll(resp, "{{listenAddr}}", dev.listener.Addr().String()) } func (dev *fakeIGD) listen() (err error) { if dev.listener, err = net.Listen("tcp", "127.0.0.1:0"); err != nil { return err } laddr := &net.UDPAddr{IP: net.ParseIP("239.255.255.250"), Port: 1900} if dev.mcastListener, err = net.ListenMulticastUDP("udp", nil, laddr); err != nil { dev.listener.Close() return err } return nil } func (dev *fakeIGD) serve() { go httpu.Serve(dev.mcastListener, dev) go http.Serve(dev.listener, dev) } func (dev *fakeIGD) close() { dev.mcastListener.Close() dev.listener.Close() }