Exemple #1
0
func TestSetICMPFilter(t *testing.T) {
	switch runtime.GOOS {
	case "plan9", "windows":
		t.Skipf("not supported on %q", runtime.GOOS)
	}
	if !supportsIPv6 {
		t.Skip("ipv6 is not supported")
	}
	if os.Getuid() != 0 {
		t.Skip("must be root")
	}

	c, err := net.ListenPacket("ip6:ipv6-icmp", "::1")
	if err != nil {
		t.Fatalf("net.ListenPacket failed: %v", err)
	}
	defer c.Close()

	p := ipv6.NewPacketConn(c)

	var f ipv6.ICMPFilter
	f.SetAll(true)
	f.Set(ipv6.ICMPTypeEchoRequest, false)
	f.Set(ipv6.ICMPTypeEchoReply, false)
	if err := p.SetICMPFilter(&f); err != nil {
		t.Fatalf("ipv6.PacketConn.SetICMPFilter failed: %v", err)
	}
	kf, err := p.ICMPFilter()
	if err != nil {
		t.Fatalf("ipv6.PacketConn.ICMPFilter failed: %v", err)
	}
	if !reflect.DeepEqual(kf, &f) {
		t.Fatalf("got unexpected filter %#v; expected %#v", kf, f)
	}
}
func TestPacketConnReadWriteMulticastICMP(t *testing.T) {
	switch runtime.GOOS {
	case "plan9", "windows":
		t.Skipf("not supported on %q", runtime.GOOS)
	}
	if !supportsIPv6 {
		t.Skip("ipv6 is not supported")
	}
	if os.Getuid() != 0 {
		t.Skip("must be root")
	}
	ifi := loopbackInterface()
	if ifi == nil {
		t.Skipf("not available on %q", runtime.GOOS)
	}

	c, err := net.ListenPacket("ip6:ipv6-icmp", "::")
	if err != nil {
		t.Fatalf("net.ListenPacket failed: %v", err)
	}
	defer c.Close()

	dst, err := net.ResolveIPAddr("ip6", "ff02::114") // see RFC 4727
	if err != nil {
		t.Fatalf("net.ResolveIPAddr failed: %v", err)
	}

	p := ipv6.NewPacketConn(c)
	if err := p.JoinGroup(ifi, dst); err != nil {
		t.Fatalf("ipv6.PacketConn.JoinGroup on %v failed: %v", ifi, err)
	}
	if err := p.SetMulticastInterface(ifi); err != nil {
		t.Fatalf("ipv6.PacketConn.SetMulticastInterface failed: %v", err)
	}
	if err := p.SetMulticastLoopback(true); err != nil {
		t.Fatalf("ipv6.PacketConn.SetMulticastLoopback failed: %v", err)
	}

	cm := ipv6.ControlMessage{
		TrafficClass: DiffServAF11 | CongestionExperienced,
		IfIndex:      ifi.Index,
	}
	cf := ipv6.FlagTrafficClass | ipv6.FlagHopLimit | ipv6.FlagInterface | ipv6.FlagPathMTU

	var f ipv6.ICMPFilter
	f.SetAll(true)
	f.Set(ipv6.ICMPTypeEchoReply, false)
	if err := p.SetICMPFilter(&f); err != nil {
		t.Fatalf("ipv6.PacketConn.SetICMPFilter failed: %v", err)
	}

	for i, toggle := range []bool{true, false, true} {
		wb, err := (&icmpMessage{
			Type: ipv6.ICMPTypeEchoRequest, Code: 0,
			Body: &icmpEcho{
				ID: os.Getpid() & 0xffff, Seq: i + 1,
				Data: []byte("HELLO-R-U-THERE"),
			},
		}).Marshal()
		if err != nil {
			t.Fatalf("icmpMessage.Marshal failed: %v", err)
		}
		if err := p.SetControlMessage(cf, toggle); err != nil {
			t.Fatalf("ipv6.PacketConn.SetControlMessage failed: %v", err)
		}
		cm.HopLimit = i + 1
		if _, err := p.WriteTo(wb, &cm, dst); err != nil {
			t.Fatalf("ipv6.PacketConn.WriteTo failed: %v", err)
		}
		b := make([]byte, 128)
		if n, cm, _, err := p.ReadFrom(b); err != nil {
			t.Fatalf("ipv6.PacketConn.ReadFrom failed: %v", err)
		} else {
			t.Logf("rcvd cmsg: %v", cm)
			if m, err := parseICMPMessage(b[:n]); err != nil {
				t.Fatalf("parseICMPMessage failed: %v", err)
			} else if m.Type != ipv6.ICMPTypeEchoReply || m.Code != 0 {
				t.Fatalf("got type=%v, code=%v; expected type=%v, code=%v", m.Type, m.Code, ipv6.ICMPTypeEchoReply, 0)
			}
		}
	}
}
Exemple #3
0
func TestICMPFilter(t *testing.T) {
	switch runtime.GOOS {
	case "plan9", "windows":
		t.Skipf("not supported on %q", runtime.GOOS)
	}

	var f ipv6.ICMPFilter
	for _, toggle := range []bool{false, true} {
		f.SetAll(toggle)
		var wg sync.WaitGroup
		for _, typ := range []ipv6.ICMPType{
			ipv6.ICMPTypeDestinationUnreachable,
			ipv6.ICMPTypeEchoReply,
			ipv6.ICMPTypeNeighborSolicitation,
			ipv6.ICMPTypeDuplicateAddressConfirmation,
		} {
			wg.Add(1)
			go func(typ ipv6.ICMPType) {
				defer wg.Done()
				f.Set(typ, false)
				if f.WillBlock(typ) {
					t.Errorf("ipv6.ICMPFilter.Set(%v, false) failed", typ)
				}
				f.Set(typ, true)
				if !f.WillBlock(typ) {
					t.Errorf("ipv6.ICMPFilter.Set(%v, true) failed", typ)
				}
			}(typ)
		}
		wg.Wait()
	}
}
Exemple #4
0
func TestPacketConnReadWriteUnicastICMP(t *testing.T) {
	switch runtime.GOOS {
	case "dragonfly", "plan9", "solaris", "windows":
		t.Skipf("not supported on %q", runtime.GOOS)
	}
	if !supportsIPv6 {
		t.Skip("ipv6 is not supported")
	}
	if os.Getuid() != 0 {
		t.Skip("must be root")
	}

	c, err := net.ListenPacket("ip6:ipv6-icmp", "::1")
	if err != nil {
		t.Fatalf("net.ListenPacket failed: %v", err)
	}
	defer c.Close()
	p := ipv6.NewPacketConn(c)
	defer p.Close()

	dst, err := net.ResolveIPAddr("ip6", "::1")
	if err != nil {
		t.Fatalf("net.ResolveIPAddr failed: %v", err)
	}

	pshicmp := ipv6PseudoHeader(c.LocalAddr().(*net.IPAddr).IP, dst.IP, ianaProtocolIPv6ICMP)
	cm := ipv6.ControlMessage{
		TrafficClass: DiffServAF11 | CongestionExperienced,
		Src:          net.IPv6loopback,
		Dst:          net.IPv6loopback,
	}
	cf := ipv6.FlagTrafficClass | ipv6.FlagHopLimit | ipv6.FlagSrc | ipv6.FlagDst | ipv6.FlagInterface | ipv6.FlagPathMTU
	ifi := loopbackInterface()
	if ifi != nil {
		cm.IfIndex = ifi.Index
	}

	var f ipv6.ICMPFilter
	f.SetAll(true)
	f.Set(ipv6.ICMPTypeEchoReply, false)
	if err := p.SetICMPFilter(&f); err != nil {
		t.Fatalf("ipv6.PacketConn.SetICMPFilter failed: %v", err)
	}

	var psh []byte
	for i, toggle := range []bool{true, false, true} {
		if toggle {
			psh = nil
			if err := p.SetChecksum(true, 2); err != nil {
				t.Fatalf("ipv6.PacketConn.SetChecksum failed: %v", err)
			}
		} else {
			psh = pshicmp
			// Some platforms never allow to disable the
			// kernel checksum processing.
			p.SetChecksum(false, -1)
		}
		wb, err := (&icmpMessage{
			Type: ipv6.ICMPTypeEchoRequest, Code: 0,
			Body: &icmpEcho{
				ID: os.Getpid() & 0xffff, Seq: i + 1,
				Data: []byte("HELLO-R-U-THERE"),
			},
		}).Marshal(psh)
		if err != nil {
			t.Fatalf("icmpMessage.Marshal failed: %v", err)
		}
		if err := p.SetControlMessage(cf, toggle); err != nil {
			t.Fatalf("ipv6.PacketConn.SetControlMessage failed: %v", err)
		}
		cm.HopLimit = i + 1
		if err := p.SetWriteDeadline(time.Now().Add(100 * time.Millisecond)); err != nil {
			t.Fatalf("ipv6.PacketConn.SetWriteDeadline failed: %v", err)
		}
		if n, err := p.WriteTo(wb, &cm, dst); err != nil {
			t.Fatalf("ipv6.PacketConn.WriteTo failed: %v", err)
		} else if n != len(wb) {
			t.Fatalf("ipv6.PacketConn.WriteTo failed: short write: %v", n)
		}
		rb := make([]byte, 128)
		if err := p.SetReadDeadline(time.Now().Add(100 * time.Millisecond)); err != nil {
			t.Fatalf("ipv6.PacketConn.SetReadDeadline failed: %v", err)
		}
		if n, cm, _, err := p.ReadFrom(rb); err != nil {
			t.Fatalf("ipv6.PacketConn.ReadFrom failed: %v", err)
		} else {
			t.Logf("rcvd cmsg: %v", cm)
			if m, err := parseICMPMessage(rb[:n]); err != nil {
				t.Fatalf("parseICMPMessage failed: %v", err)
			} else if m.Type != ipv6.ICMPTypeEchoReply || m.Code != 0 {
				t.Fatalf("got type=%v, code=%v; expected type=%v, code=%v", m.Type, m.Code, ipv6.ICMPTypeEchoReply, 0)
			}
		}
	}
}