p2p/nat: add test for UPnP auto discovery via SSDP
The test listens for multicast UDP packets on the default interface because I couldn't get it to work reliably on loopback without massive changes to goupnp. This means that the test might fail when there is a UPnP-enabled router attached on that interface. I checked that locally by looping the test and it passes reliably because the local SSDP server always responds faster.
This commit is contained in:
Felix Lange
parent
983f5a717a
commit
663d4e0aff
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@ -0,0 +1,223 @@
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package nat
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import (
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"fmt"
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"io"
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"net"
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"net/http"
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"strings"
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"testing"
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"github.com/huin/goupnp/httpu"
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)
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func TestUPNP_DDWRT(t *testing.T) {
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dev := &fakeIGD{
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t: t,
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ssdpResp: "HTTP/1.1 200 OK\r\n" +
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"Cache-Control: max-age=300\r\n" +
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"Date: Sun, 10 May 2015 10:05:33 GMT\r\n" +
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"Ext: \r\n" +
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"Location: http://{{listenAddr}}/InternetGatewayDevice.xml\r\n" +
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"Server: POSIX UPnP/1.0 DD-WRT Linux/V24\r\n" +
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"ST: urn:schemas-upnp-org:device:WANConnectionDevice:1\r\n" +
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"USN: uuid:CB2471CC-CF2E-9795-8D9C-E87B34C16800::urn:schemas-upnp-org:device:WANConnectionDevice:1\r\n" +
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"\r\n",
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httpResps: map[string]string{
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"GET /InternetGatewayDevice.xml": `
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<?xml version="1.0"?>
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<root xmlns="urn:schemas-upnp-org:device-1-0">
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<specVersion>
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<major>1</major>
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<minor>0</minor>
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</specVersion>
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<device>
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<deviceType>urn:schemas-upnp-org:device:InternetGatewayDevice:1</deviceType>
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<manufacturer>DD-WRT</manufacturer>
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<manufacturerURL>http://www.dd-wrt.com</manufacturerURL>
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<modelDescription>Gateway</modelDescription>
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<friendlyName>Asus RT-N16:DD-WRT</friendlyName>
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<modelName>Asus RT-N16</modelName>
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<modelNumber>V24</modelNumber>
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<serialNumber>0000001</serialNumber>
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<modelURL>http://www.dd-wrt.com</modelURL>
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<UDN>uuid:A13AB4C3-3A14-E386-DE6A-EFEA923A06FE</UDN>
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<serviceList>
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<service>
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<serviceType>urn:schemas-upnp-org:service:Layer3Forwarding:1</serviceType>
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<serviceId>urn:upnp-org:serviceId:L3Forwarding1</serviceId>
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<SCPDURL>/x_layer3forwarding.xml</SCPDURL>
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<controlURL>/control?Layer3Forwarding</controlURL>
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<eventSubURL>/event?Layer3Forwarding</eventSubURL>
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</service>
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</serviceList>
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<deviceList>
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<device>
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<deviceType>urn:schemas-upnp-org:device:WANDevice:1</deviceType>
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<friendlyName>WANDevice</friendlyName>
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<manufacturer>DD-WRT</manufacturer>
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<manufacturerURL>http://www.dd-wrt.com</manufacturerURL>
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<modelDescription>Gateway</modelDescription>
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<modelName>router</modelName>
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<modelURL>http://www.dd-wrt.com</modelURL>
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<UDN>uuid:48FD569B-F9A9-96AE-4EE6-EB403D3DB91A</UDN>
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<serviceList>
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<service>
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<serviceType>urn:schemas-upnp-org:service:WANCommonInterfaceConfig:1</serviceType>
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<serviceId>urn:upnp-org:serviceId:WANCommonIFC1</serviceId>
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<SCPDURL>/x_wancommoninterfaceconfig.xml</SCPDURL>
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<controlURL>/control?WANCommonInterfaceConfig</controlURL>
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<eventSubURL>/event?WANCommonInterfaceConfig</eventSubURL>
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</service>
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</serviceList>
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<deviceList>
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<device>
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<deviceType>urn:schemas-upnp-org:device:WANConnectionDevice:1</deviceType>
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<friendlyName>WAN Connection Device</friendlyName>
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<manufacturer>DD-WRT</manufacturer>
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<manufacturerURL>http://www.dd-wrt.com</manufacturerURL>
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<modelDescription>Gateway</modelDescription>
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<modelName>router</modelName>
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<modelURL>http://www.dd-wrt.com</modelURL>
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<UDN>uuid:CB2471CC-CF2E-9795-8D9C-E87B34C16800</UDN>
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<serviceList>
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<service>
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<serviceType>urn:schemas-upnp-org:service:WANIPConnection:1</serviceType>
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<serviceId>urn:upnp-org:serviceId:WANIPConn1</serviceId>
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<SCPDURL>/x_wanipconnection.xml</SCPDURL>
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<controlURL>/control?WANIPConnection</controlURL>
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<eventSubURL>/event?WANIPConnection</eventSubURL>
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</service>
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</serviceList>
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</device>
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</deviceList>
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</device>
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<device>
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<deviceType>urn:schemas-upnp-org:device:LANDevice:1</deviceType>
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<friendlyName>LANDevice</friendlyName>
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<manufacturer>DD-WRT</manufacturer>
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<manufacturerURL>http://www.dd-wrt.com</manufacturerURL>
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<modelDescription>Gateway</modelDescription>
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<modelName>router</modelName>
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<modelURL>http://www.dd-wrt.com</modelURL>
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<UDN>uuid:04021998-3B35-2BDB-7B3C-99DA4435DA09</UDN>
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<serviceList>
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<service>
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<serviceType>urn:schemas-upnp-org:service:LANHostConfigManagement:1</serviceType>
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<serviceId>urn:upnp-org:serviceId:LANHostCfg1</serviceId>
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<SCPDURL>/x_lanhostconfigmanagement.xml</SCPDURL>
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<controlURL>/control?LANHostConfigManagement</controlURL>
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<eventSubURL>/event?LANHostConfigManagement</eventSubURL>
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</service>
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</serviceList>
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</device>
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</deviceList>
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<presentationURL>http://{{listenAddr}}</presentationURL>
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</device>
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</root>
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`,
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// The response to our GetNATRSIPStatus call. This
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// particular implementation has a bug where the elements
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// inside u:GetNATRSIPStatusResponse are not properly
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// namespaced.
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"POST /control?WANIPConnection": `
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<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
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<s:Body>
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<u:GetNATRSIPStatusResponse xmlns:u="urn:schemas-upnp-org:service:WANIPConnection:1">
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<NewRSIPAvailable>0</NewRSIPAvailable>
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<NewNATEnabled>1</NewNATEnabled>
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</u:GetNATRSIPStatusResponse>
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</s:Body>
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</s:Envelope>
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`,
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},
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}
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if err := dev.listen(); err != nil {
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t.Skipf("cannot listen: %v", err)
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}
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dev.serve()
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defer dev.close()
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// Attempt to discover the fake device.
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discovered := discoverUPnP()
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if discovered == nil {
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t.Fatalf("not discovered")
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}
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upnp, _ := discovered.(*upnp)
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if upnp.service != "IGDv1-IP1" {
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t.Errorf("upnp.service mismatch: got %q, want %q", upnp.service, "IGDv1-IP1")
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}
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wantURL := "http://" + dev.listener.Addr().String() + "/InternetGatewayDevice.xml"
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if upnp.dev.URLBaseStr != wantURL {
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t.Errorf("upnp.dev.URLBaseStr mismatch: got %q, want %q", upnp.dev.URLBaseStr, wantURL)
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}
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}
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// fakeIGD presents itself as a discoverable UPnP device which sends
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// canned responses to HTTPU and HTTP requests.
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type fakeIGD struct {
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t *testing.T // for logging
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listener net.Listener
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mcastListener *net.UDPConn
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// This should be a complete HTTP response (including headers).
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// It is sent as the response to any sspd packet. Any occurrence
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// of "{{listenAddr}}" is replaced with the actual TCP listen
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// address of the HTTP server.
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ssdpResp string
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// This one should contain XML payloads for all requests
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// performed. The keys contain method and path, e.g. "GET /foo/bar".
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// As with ssdpResp, "{{listenAddr}}" is replaced with the TCP
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// listen address.
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httpResps map[string]string
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}
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// httpu.Handler
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func (dev *fakeIGD) ServeMessage(r *http.Request) {
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dev.t.Logf(`HTTPU request %s %s`, r.Method, r.RequestURI)
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conn, err := net.Dial("udp4", r.RemoteAddr)
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if err != nil {
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fmt.Printf("reply Dial error: %v", err)
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return
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}
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defer conn.Close()
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io.WriteString(conn, dev.replaceListenAddr(dev.ssdpResp))
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}
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// http.Handler
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func (dev *fakeIGD) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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if resp, ok := dev.httpResps[r.Method+" "+r.RequestURI]; ok {
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dev.t.Logf(`HTTP request "%s %s" --> %d`, r.Method, r.RequestURI, 200)
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io.WriteString(w, dev.replaceListenAddr(resp))
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} else {
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dev.t.Logf(`HTTP request "%s %s" --> %d`, r.Method, r.RequestURI, 404)
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w.WriteHeader(http.StatusNotFound)
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}
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}
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func (dev *fakeIGD) replaceListenAddr(resp string) string {
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return strings.Replace(resp, "{{listenAddr}}", dev.listener.Addr().String(), -1)
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}
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func (dev *fakeIGD) listen() (err error) {
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if dev.listener, err = net.Listen("tcp", "127.0.0.1:0"); err != nil {
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return err
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}
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laddr := &net.UDPAddr{IP: net.ParseIP("239.255.255.250"), Port: 1900}
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if dev.mcastListener, err = net.ListenMulticastUDP("udp", nil, laddr); err != nil {
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dev.listener.Close()
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return err
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}
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return nil
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}
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func (dev *fakeIGD) serve() {
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go httpu.Serve(dev.mcastListener, dev)
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go http.Serve(dev.listener, dev)
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}
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func (dev *fakeIGD) close() {
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dev.mcastListener.Close()
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dev.listener.Close()
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}
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