gomrt: add mrt packet library

currently TABLE_DUMPV2 and BGP4MP message is supported

Signed-off-by: ISHIDA Wataru <ishida.wataru@lab.ntt.co.jp>

1 files changed, 213 insertions, 0 deletions

diff --git a/gomrt/packet/mrt_test.go b/gomrt/packet/mrt_test.go
new file mode 100644
index 00000000..e04ba48f
--- /dev/null
+++ b/gomrt/packet/mrt_test.go
@@ -0,0 +1,213 @@
+package mrt
+
+import (
+	"bytes"
+	"github.com/osrg/gobgp/packet"
+	"github.com/stretchr/testify/assert"
+	"net"
+	"testing"
+	"time"
+)
+
+func TestMrtHdr(t *testing.T) {
+	h1, err := NewHeader(10, TABLE_DUMPv2, RIB_IPV4_MULTICAST, 20)
+	if err != nil {
+		t.Fatal(err)
+	}
+	b1, err := h1.Serialize()
+	if err != nil {
+		t.Fatal(err)
+	}
+	h2 := &Header{}
+	err = h2.DecodeFromBytes(b1)
+	if err != nil {
+		t.Fatal(err)
+	}
+	b2, err := h2.Serialize()
+	if err != nil {
+		t.Fatal(err)
+	}
+	assert.Equal(t, bytes.Equal(b1, b2), true)
+}
+
+func testPeer(t *testing.T, p1 *Peer) {
+	b1, err := p1.Serialize()
+	if err != nil {
+		t.Fatal(err)
+	}
+	p2 := &Peer{}
+	rest, err := p2.DecodeFromBytes(b1)
+	if err != nil {
+		t.Fatal(err)
+	}
+	assert.Equal(t, len(rest), 0)
+	b2, err := p2.Serialize()
+	if err != nil {
+		t.Fatal(err)
+	}
+	assert.Equal(t, bytes.Equal(b1, b2), true)
+}
+
+func TestMrtPeer(t *testing.T) {
+	p := NewPeer(net.ParseIP("192.168.0.1"), net.ParseIP("10.0.0.1"), 65000, false)
+	testPeer(t, p)
+}
+
+func TestMrtPeerv6(t *testing.T) {
+	p := NewPeer(net.ParseIP("192.168.0.1"), net.ParseIP("2001::1"), 65000, false)
+	testPeer(t, p)
+}
+
+func TestMrtPeerAS4(t *testing.T) {
+	p := NewPeer(net.ParseIP("192.168.0.1"), net.ParseIP("2001::1"), 135500, true)
+	testPeer(t, p)
+}
+
+func TestMrtPeerIndexTable(t *testing.T) {
+	p1 := NewPeer(net.ParseIP("192.168.0.1"), net.ParseIP("10.0.0.1"), 65000, false)
+	p2 := NewPeer(net.ParseIP("192.168.0.1"), net.ParseIP("2001::1"), 65000, false)
+	p3 := NewPeer(net.ParseIP("192.168.0.1"), net.ParseIP("2001::1"), 135500, true)
+	pt1 := NewPeerIndexTable(net.ParseIP("192.168.0.1"), "test", []*Peer{p1, p2, p3})
+	b1, err := pt1.Serialize()
+	if err != nil {
+		t.Fatal(err)
+	}
+	pt2 := &PeerIndexTable{}
+	err = pt2.DecodeFromBytes(b1)
+	if err != nil {
+		t.Fatal(err)
+	}
+	b2, err := pt2.Serialize()
+	if err != nil {
+		t.Fatal(err)
+	}
+	assert.Equal(t, bytes.Equal(b1, b2), true)
+}
+
+func TestMrtRibEntry(t *testing.T) {
+	aspath1 := []bgp.AsPathParamInterface{
+		bgp.NewAsPathParam(2, []uint16{1000}),
+		bgp.NewAsPathParam(1, []uint16{1001, 1002}),
+		bgp.NewAsPathParam(2, []uint16{1003, 1004}),
+	}
+
+	p := []bgp.PathAttributeInterface{
+		bgp.NewPathAttributeOrigin(3),
+		bgp.NewPathAttributeAsPath(aspath1),
+		bgp.NewPathAttributeNextHop("129.1.1.2"),
+		bgp.NewPathAttributeMultiExitDisc(1 << 20),
+		bgp.NewPathAttributeLocalPref(1 << 22),
+	}
+
+	e1 := NewRibEntry(1, uint32(time.Now().Unix()), p)
+	b1, err := e1.Serialize()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	e2 := &RibEntry{}
+	rest, err := e2.DecodeFromBytes(b1)
+	if err != nil {
+		t.Fatal(err)
+	}
+	assert.Equal(t, len(rest), 0)
+	b2, err := e2.Serialize()
+	if err != nil {
+		t.Fatal(err)
+	}
+	assert.Equal(t, bytes.Equal(b1, b2), true)
+}
+
+func TestMrtRib(t *testing.T) {
+	aspath1 := []bgp.AsPathParamInterface{
+		bgp.NewAsPathParam(2, []uint16{1000}),
+		bgp.NewAsPathParam(1, []uint16{1001, 1002}),
+		bgp.NewAsPathParam(2, []uint16{1003, 1004}),
+	}
+
+	p := []bgp.PathAttributeInterface{
+		bgp.NewPathAttributeOrigin(3),
+		bgp.NewPathAttributeAsPath(aspath1),
+		bgp.NewPathAttributeNextHop("129.1.1.2"),
+		bgp.NewPathAttributeMultiExitDisc(1 << 20),
+		bgp.NewPathAttributeLocalPref(1 << 22),
+	}
+
+	e1 := NewRibEntry(1, uint32(time.Now().Unix()), p)
+	e2 := NewRibEntry(2, uint32(time.Now().Unix()), p)
+	e3 := NewRibEntry(3, uint32(time.Now().Unix()), p)
+
+	r1 := NewRib(1, bgp.NewIPAddrPrefix(24, "192.168.0.0"), []*RibEntry{e1, e2, e3})
+	b1, err := r1.Serialize()
+	if err != nil {
+		t.Fatal(err)
+	}
+	r2 := &Rib{
+		RouteFamily: bgp.RF_IPv4_UC,
+	}
+	err = r2.DecodeFromBytes(b1)
+	if err != nil {
+		t.Fatal(err)
+	}
+	b2, err := r2.Serialize()
+	if err != nil {
+		t.Fatal(err)
+	}
+	assert.Equal(t, bytes.Equal(b1, b2), true)
+}
+
+func TestMrtBgp4mpStateChange(t *testing.T) {
+	c1 := NewBGP4MPStateChange(65000, 650001, 1, net.ParseIP("192.168.0.1"), net.ParseIP("192.168.0.2"), false, ACTIVE, ESTABLISHED)
+	b1, err := c1.Serialize()
+	if err != nil {
+		t.Fatal(err)
+	}
+	c2 := &BGP4MPStateChange{BGP4MPHeader: &BGP4MPHeader{}}
+	err = c2.DecodeFromBytes(b1)
+	if err != nil {
+		t.Fatal(err)
+	}
+	b2, err := c2.Serialize()
+	if err != nil {
+		t.Fatal(err)
+	}
+	assert.Equal(t, bytes.Equal(b1, b2), true)
+}
+
+func TestMrtBgp4mpMessage(t *testing.T) {
+	msg := bgp.NewBGPKeepAliveMessage()
+	m1 := NewBGP4MPMessage(65000, 650001, 1, net.ParseIP("192.168.0.1"), net.ParseIP("192.168.0.2"), false, msg)
+	b1, err := m1.Serialize()
+	if err != nil {
+		t.Fatal(err)
+	}
+	m2 := &BGP4MPMessage{BGP4MPHeader: &BGP4MPHeader{}}
+	err = m2.DecodeFromBytes(b1)
+	if err != nil {
+		t.Fatal(err)
+	}
+	b2, err := m2.Serialize()
+	if err != nil {
+		t.Fatal(err)
+	}
+	assert.Equal(t, bytes.Equal(b1, b2), true)
+}
+
+func TestMrtBgp4mpMessageLocal(t *testing.T) {
+	msg := bgp.NewBGPKeepAliveMessage()
+	m1 := NewBGP4MPMessageLocal(65000, 650001, 1, net.ParseIP("192.168.0.1"), net.ParseIP("192.168.0.2"), false, msg)
+	b1, err := m1.Serialize()
+	if err != nil {
+		t.Fatal(err)
+	}
+	m2 := &BGP4MPMessage{BGP4MPHeader: &BGP4MPHeader{}}
+	err = m2.DecodeFromBytes(b1)
+	if err != nil {
+		t.Fatal(err)
+	}
+	b2, err := m2.Serialize()
+	if err != nil {
+		t.Fatal(err)
+	}
+	assert.Equal(t, bytes.Equal(b1, b2), true)
+}