mirror of https://github.com/vishvananda/netlink
SocketGet support udp and ipv6
Signed-off-by: Asutorufa <16442314+Asutorufa@users.noreply.github.com>
This commit is contained in:
Asutorufa
Alessandro Boch
parent
3e28e6db88
commit
d237ee16c3
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@ -56,10 +56,8 @@ func (r *socketRequest) Serialize() []byte {
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copy(b.Next(16), r.ID.Source)
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copy(b.Next(16), r.ID.Destination)
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} else {
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copy(b.Next(4), r.ID.Source.To4())
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b.Next(12)
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copy(b.Next(4), r.ID.Destination.To4())
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b.Next(12)
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copy(b.Next(16), r.ID.Source.To4())
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copy(b.Next(16), r.ID.Destination.To4())
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}
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native.PutUint32(b.Next(4), r.ID.Interface)
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native.PutUint32(b.Next(4), r.ID.Cookie[0])
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@ -160,20 +158,44 @@ func (u *UnixSocket) deserialize(b []byte) error {
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// SocketGet returns the Socket identified by its local and remote addresses.
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func SocketGet(local, remote net.Addr) (*Socket, error) {
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localTCP, ok := local.(*net.TCPAddr)
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if !ok {
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var protocol uint8
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var localIP, remoteIP net.IP
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var localPort, remotePort uint16
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switch l := local.(type) {
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case *net.TCPAddr:
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r, ok := remote.(*net.TCPAddr)
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if !ok {
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return nil, ErrNotImplemented
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}
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localIP = l.IP
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localPort = uint16(l.Port)
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remoteIP = r.IP
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remotePort = uint16(r.Port)
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protocol = unix.IPPROTO_TCP
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case *net.UDPAddr:
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r, ok := remote.(*net.UDPAddr)
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if !ok {
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return nil, ErrNotImplemented
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}
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localIP = l.IP
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localPort = uint16(l.Port)
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remoteIP = r.IP
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remotePort = uint16(r.Port)
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protocol = unix.IPPROTO_UDP
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default:
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return nil, ErrNotImplemented
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}
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remoteTCP, ok := remote.(*net.TCPAddr)
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if !ok {
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return nil, ErrNotImplemented
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var family uint8
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if localIP.To4() != nil && remoteIP.To4() != nil {
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family = unix.AF_INET
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}
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localIP := localTCP.IP.To4()
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if localIP == nil {
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return nil, ErrNotImplemented
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if family == 0 && localIP.To16() != nil && remoteIP.To16() != nil {
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family = unix.AF_INET6
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}
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remoteIP := remoteTCP.IP.To4()
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if remoteIP == nil {
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if family == 0 {
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return nil, ErrNotImplemented
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}
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@ -182,19 +204,24 @@ func SocketGet(local, remote net.Addr) (*Socket, error) {
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return nil, err
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}
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defer s.Close()
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req := nl.NewNetlinkRequest(nl.SOCK_DIAG_BY_FAMILY, 0)
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req := nl.NewNetlinkRequest(nl.SOCK_DIAG_BY_FAMILY, unix.NLM_F_DUMP)
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req.AddData(&socketRequest{
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Family: unix.AF_INET,
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Protocol: unix.IPPROTO_TCP,
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Family: family,
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Protocol: protocol,
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States: 0xffffffff,
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ID: SocketID{
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SourcePort: uint16(localTCP.Port),
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DestinationPort: uint16(remoteTCP.Port),
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SourcePort: localPort,
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DestinationPort: remotePort,
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Source: localIP,
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Destination: remoteIP,
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Cookie: [2]uint32{nl.TCPDIAG_NOCOOKIE, nl.TCPDIAG_NOCOOKIE},
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},
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})
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s.Send(req)
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if err := s.Send(req); err != nil {
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return nil, err
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}
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msgs, from, err := s.Receive()
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if err != nil {
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return nil, err
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115
socket_test.go
115
socket_test.go
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@ -16,47 +16,90 @@ import (
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func TestSocketGet(t *testing.T) {
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defer setUpNetlinkTestWithLoopback(t)()
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addr, err := net.ResolveTCPAddr("tcp", "localhost:0")
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if err != nil {
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log.Fatal(err)
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}
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l, err := net.ListenTCP("tcp", addr)
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if err != nil {
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log.Fatal(err)
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}
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defer l.Close()
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conn, err := net.Dial(l.Addr().Network(), l.Addr().String())
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if err != nil {
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t.Fatal(err)
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}
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defer conn.Close()
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localAddr := conn.LocalAddr().(*net.TCPAddr)
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remoteAddr := conn.RemoteAddr().(*net.TCPAddr)
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socket, err := SocketGet(localAddr, remoteAddr)
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if err != nil {
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t.Fatal(err)
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type Addr struct {
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IP net.IP
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Port int
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}
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if got, want := socket.ID.Source, localAddr.IP; !got.Equal(want) {
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t.Fatalf("local ip = %v, want %v", got, want)
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getAddr := func(a net.Addr) Addr {
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var addr Addr
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switch v := a.(type) {
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case *net.UDPAddr:
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addr.IP = v.IP
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addr.Port = v.Port
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case *net.TCPAddr:
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addr.IP = v.IP
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addr.Port = v.Port
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}
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return addr
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}
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if got, want := socket.ID.Destination, remoteAddr.IP; !got.Equal(want) {
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t.Fatalf("remote ip = %v, want %v", got, want)
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checkSocket := func(t *testing.T, local, remote net.Addr) {
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socket, err := SocketGet(local, remote)
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if err != nil {
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t.Fatal(err)
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}
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localAddr, remoteAddr := getAddr(local), getAddr(remote)
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if got, want := socket.ID.Source, localAddr.IP; !got.Equal(want) {
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t.Fatalf("local ip = %v, want %v", got, want)
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}
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if got, want := socket.ID.Destination, remoteAddr.IP; !got.Equal(want) {
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t.Fatalf("remote ip = %v, want %v", got, want)
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}
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if got, want := int(socket.ID.SourcePort), localAddr.Port; got != want {
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t.Fatalf("local port = %d, want %d", got, want)
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}
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if got, want := int(socket.ID.DestinationPort), remoteAddr.Port; got != want {
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t.Fatalf("remote port = %d, want %d", got, want)
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}
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u, err := user.Current()
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if err != nil {
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t.Fatal(err)
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}
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if got, want := strconv.Itoa(int(socket.UID)), u.Uid; got != want {
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t.Fatalf("UID = %s, want %s", got, want)
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}
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}
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if got, want := int(socket.ID.SourcePort), localAddr.Port; got != want {
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t.Fatalf("local port = %d, want %d", got, want)
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for _, v := range [...]string{"tcp4", "tcp6"} {
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addr, err := net.ResolveTCPAddr(v, "localhost:0")
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if err != nil {
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log.Fatal(err)
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}
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l, err := net.ListenTCP(v, addr)
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if err != nil {
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log.Fatal(err)
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}
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defer l.Close()
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conn, err := net.Dial(l.Addr().Network(), l.Addr().String())
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if err != nil {
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t.Fatal(err)
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}
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defer conn.Close()
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checkSocket(t, conn.LocalAddr(), conn.RemoteAddr())
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}
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if got, want := int(socket.ID.DestinationPort), remoteAddr.Port; got != want {
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t.Fatalf("remote port = %d, want %d", got, want)
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}
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u, err := user.Current()
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if err != nil {
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t.Fatal(err)
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}
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if got, want := strconv.Itoa(int(socket.UID)), u.Uid; got != want {
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t.Fatalf("UID = %s, want %s", got, want)
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for _, v := range [...]string{"udp4", "udp6"} {
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addr, err := net.ResolveUDPAddr(v, "localhost:0")
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if err != nil {
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log.Fatal(err)
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}
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l, err := net.ListenUDP(v, addr)
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if err != nil {
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log.Fatal(err)
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}
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defer l.Close()
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conn, err := net.Dial(l.LocalAddr().Network(), l.LocalAddr().String())
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if err != nil {
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t.Fatal(err)
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}
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defer conn.Close()
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checkSocket(t, conn.LocalAddr(), conn.RemoteAddr())
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}
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}
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