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net: revert CL 82975
this solution as it stands doesn't work with non-english device names (golang/go#23191 (which has a fix)) and names some devices differently (golang/go#23153) probably due to the fact that this test previously only ran on Server 2008. Re-opens golang/go#20073 Change-Id: I5c36774ddd85ac07620b4015372d564acbb169ad Reviewed-on: https://go-review.googlesource.com/85315 Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
This commit is contained in:
Jeff Johnson
Alex Brainman
parent
f3f507b2d8
commit
46c5856f6d
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@ -503,72 +503,139 @@ func TestInterfaceAddrsWithNetsh(t *testing.T) {
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}
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}
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func contains(needle string, haystack []string) bool {
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for _, v := range haystack {
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if v == needle {
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return true
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// check that getmac exists as a powershell command, and that it
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// speaks English.
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func checkGetmac(t *testing.T) {
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out, err := runCmd("getmac", "/?")
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if err != nil {
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if strings.Contains(err.Error(), "term 'getmac' is not recognized as the name of a cmdlet") {
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t.Skipf("getmac not available")
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}
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t.Fatal(err)
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}
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if !bytes.Contains(out, []byte("network adapters on a system")) {
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t.Skipf("skipping test on non-English system")
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}
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return false
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}
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func TestInterfaceHardwareAddrWithWmic(t *testing.T) {
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func TestInterfaceHardwareAddrWithGetmac(t *testing.T) {
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if isWindowsXP(t) {
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t.Skip("Windows XP does not have powershell command")
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}
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checkGetmac(t)
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ift, err := Interfaces()
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if err != nil {
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t.Fatal(err)
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}
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goMacToName := make(map[string]string)
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have := make(map[string]string)
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for _, ifi := range ift {
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if ifi.Flags&FlagLoopback != 0 {
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// no MAC address for loopback interfaces
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continue
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}
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goMacToName[ifi.HardwareAddr.String()] = ifi.Name
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have[ifi.Name] = ifi.HardwareAddr.String()
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}
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//wmic nic get MACAddress,NetConnectionID /format:csv
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//
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//Node,MACAddress,NetConnectionID
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//SERVER-2008R2-V,,
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//SERVER-2008R2-V,42:01:0A:F0:00:18,Local Area Connection
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//SERVER-2008R2-V,42:01:0A:F0:00:18,Duplicate Adapter
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//SERVER-2008R2-V,20:41:53:59:4E:FF,
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out, err := exec.Command("wmic", "nic", "get", "MACAddress,NetConnectionID", "/format:csv").CombinedOutput()
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out, err := runCmd("getmac", "/fo", "list", "/v")
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if err != nil {
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t.Fatal(err)
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}
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winMacToNames := make(map[string][]string)
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// getmac output looks like:
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//
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//Connection Name: Local Area Connection
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//Network Adapter: Intel Gigabit Network Connection
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//Physical Address: XX-XX-XX-XX-XX-XX
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//Transport Name: \Device\Tcpip_{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}
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//
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//Connection Name: Wireless Network Connection
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//Network Adapter: Wireles WLAN Card
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//Physical Address: XX-XX-XX-XX-XX-XX
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//Transport Name: Media disconnected
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//
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//Connection Name: Bluetooth Network Connection
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//Network Adapter: Bluetooth Device (Personal Area Network)
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//Physical Address: N/A
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//Transport Name: Hardware not present
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//
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//Connection Name: VMware Network Adapter VMnet8
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//Network Adapter: VMware Virtual Ethernet Adapter for VMnet8
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//Physical Address: Disabled
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//Transport Name: Disconnected
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//
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want := make(map[string]string)
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group := make(map[string]string) // name / values for single adapter
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getValue := func(name string) string {
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value, found := group[name]
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if !found {
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t.Fatalf("%q has no %q line in it", group, name)
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}
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if value == "" {
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t.Fatalf("%q has empty %q value", group, name)
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}
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return value
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}
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processGroup := func() {
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if len(group) == 0 {
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return
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}
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tname := strings.ToLower(getValue("Transport Name"))
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if tname == "n/a" {
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// skip these
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return
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}
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addr := strings.ToLower(getValue("Physical Address"))
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if addr == "disabled" || addr == "n/a" {
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// skip these
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return
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}
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addr = strings.Replace(addr, "-", ":", -1)
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cname := getValue("Connection Name")
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want[cname] = addr
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group = make(map[string]string)
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}
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lines := bytes.Split(out, []byte{'\r', '\n'})
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for _, line := range lines {
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entry := strings.Split(string(line), ",")
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if len(entry) != 3 || entry[1] == "MACAddress" {
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// skip empty lines, header
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if len(line) == 0 {
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processGroup()
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continue
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}
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i := bytes.IndexByte(line, ':')
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if i == -1 {
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t.Fatalf("line %q has no : in it", line)
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}
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group[string(line[:i])] = string(bytes.TrimSpace(line[i+1:]))
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}
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processGroup()
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mac, name := strings.ToLower(entry[1]), strings.TrimSpace(entry[2])
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if mac == "" || name == "" {
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// skip non-physical devices
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dups := make(map[string][]string)
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for name, addr := range want {
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if _, ok := dups[addr]; !ok {
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dups[addr] = make([]string, 0)
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}
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dups[addr] = append(dups[addr], name)
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}
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nextWant:
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for name, wantAddr := range want {
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if haveAddr, ok := have[name]; ok {
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if haveAddr != wantAddr {
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t.Errorf("unexpected MAC address for %q - %v, want %v", name, haveAddr, wantAddr)
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}
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continue
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}
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winMacToNames[mac] = append(winMacToNames[mac], name)
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}
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if len(goMacToName) != len(winMacToNames) {
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t.Errorf("go interface count (%d, %v) differs from wmic count (%d, %v)", len(goMacToName), goMacToName, len(winMacToNames), winMacToNames)
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}
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for mac, name := range goMacToName {
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// Windows appears to associate multiple names to a single MAC
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// Consider it a success if one of those names was found
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if cmdNames, ok := winMacToNames[mac]; ok {
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if contains(name, cmdNames) {
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continue
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// We could not find the interface in getmac output by name.
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// But sometimes getmac lists many interface names
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// for the same MAC address. If that is the case here,
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// and we can match at least one of those names,
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// let's ignore the other names.
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if dupNames, ok := dups[wantAddr]; ok && len(dupNames) > 1 {
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for _, dupName := range dupNames {
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if haveAddr, ok := have[dupName]; ok && haveAddr == wantAddr {
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continue nextWant
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}
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}
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}
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t.Errorf("go found interface (name: %s, mac: %s) not found by wmic (%v)", name, mac, winMacToNames)
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t.Errorf("getmac lists %q, but it could not be found among Go interfaces %v", name, have)
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}
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}
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