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package bgp
import (
"bytes"
"encoding/binary"
"github.com/stretchr/testify/assert"
"net"
"testing"
)
func keepalive() *BGPMessage {
return NewBGPKeepAliveMessage()
}
func notification() *BGPMessage {
return NewBGPNotificationMessage(1, 2, nil)
}
func refresh() *BGPMessage {
return NewBGPRouteRefreshMessage(1, 2, 10)
}
func open() *BGPMessage {
p1 := NewOptionParameterCapability(
[]ParameterCapabilityInterface{NewCapRouteRefresh()})
p2 := NewOptionParameterCapability(
[]ParameterCapabilityInterface{NewCapMultiProtocol(3, 4)})
g := CapGracefulRestartTuples{4, 2, 3}
p3 := NewOptionParameterCapability(
[]ParameterCapabilityInterface{NewCapGracefulRestart(2, 100,
[]CapGracefulRestartTuples{g})})
p4 := NewOptionParameterCapability(
[]ParameterCapabilityInterface{NewCapFourOctetASNumber(100000)})
return NewBGPOpenMessage(11033, 303, "100.4.10.3",
[]OptionParameterInterface{p1, p2, p3, p4})
}
func update() *BGPMessage {
w1 := WithdrawnRoute{*NewIPAddrPrefix(23, "121.1.3.2")}
w2 := WithdrawnRoute{*NewIPAddrPrefix(17, "100.33.3.0")}
w := []WithdrawnRoute{w1, w2}
aspath1 := []AsPathParamInterface{
NewAsPathParam(2, []uint16{1000}),
NewAsPathParam(1, []uint16{1001, 1002}),
NewAsPathParam(2, []uint16{1003, 1004}),
}
aspath2 := []AsPathParamInterface{
NewAs4PathParam(2, []uint32{1000000}),
NewAs4PathParam(1, []uint32{1000001, 1002}),
NewAs4PathParam(2, []uint32{1003, 100004}),
}
aspath3 := []*As4PathParam{
NewAs4PathParam(2, []uint32{1000000}),
NewAs4PathParam(1, []uint32{1000001, 1002}),
NewAs4PathParam(2, []uint32{1003, 100004}),
}
ecommunities := []ExtendedCommunityInterface{
&TwoOctetAsSpecificExtended{SubType: 1, AS: 10003, LocalAdmin: 3 << 20},
&FourOctetAsSpecificExtended{SubType: 2, AS: 1 << 20, LocalAdmin: 300},
&IPv4AddressSpecificExtended{SubType: 3, IPv4: net.ParseIP("192.2.1.2").To4(), LocalAdmin: 3000},
&OpaqueExtended{Value: []byte{0, 1, 2, 3, 4, 5, 6, 7}},
&UnknownExtended{Type: 99, Value: []byte{0, 1, 2, 3, 4, 5, 6, 7}},
}
mp_nlri := []AddrPrefixInterface{
NewLabelledVPNIPAddrPrefix(20, "192.0.9.0", *NewLabel(1, 2, 3),
NewRouteDistinguisherTwoOctetAS(256, 10000)),
NewLabelledVPNIPAddrPrefix(26, "192.10.8.192", *NewLabel(5, 6, 7, 8),
NewRouteDistinguisherIPAddressAS("10.0.1.1", 10001)),
}
mp_nlri2 := []AddrPrefixInterface{NewIPv6AddrPrefix(100,
"fe80:1234:1234:5667:8967:af12:8912:1023")}
mp_nlri3 := []AddrPrefixInterface{NewLabelledVPNIPv6AddrPrefix(100,
"fe80:1234:1234:5667:8967:af12:1203:33a1", *NewLabel(5, 6),
NewRouteDistinguisherFourOctetAS(5, 6))}
mp_nlri4 := []AddrPrefixInterface{NewLabelledIPAddrPrefix(25, "192.168.0.0",
*NewLabel(5, 6, 7))}
p := []PathAttributeInterface{
NewPathAttributeOrigin(3),
NewPathAttributeAsPath(aspath1),
NewPathAttributeAsPath(aspath2),
NewPathAttributeNextHop("129.1.1.2"),
NewPathAttributeMultiExitDisc(1 << 20),
NewPathAttributeLocalPref(1 << 22),
NewPathAttributeAtomicAggregate(),
NewPathAttributeAggregator(uint16(30002), "129.0.2.99"),
NewPathAttributeAggregator(uint32(30002), "129.0.2.99"),
NewPathAttributeAggregator(uint32(300020), "129.0.2.99"),
NewPathAttributeCommunities([]uint32{1, 3}),
NewPathAttributeOriginatorId("10.10.0.1"),
NewPathAttributeClusterList([]string{"10.10.0.2", "10.10.0.3"}),
NewPathAttributeExtendedCommunities(ecommunities),
NewPathAttributeAs4Path(aspath3),
NewPathAttributeAs4Aggregator(10000, "112.22.2.1"),
NewPathAttributeMpReachNLRI("112.22.2.0", mp_nlri),
NewPathAttributeMpReachNLRI("1023::", mp_nlri2),
NewPathAttributeMpReachNLRI("fe80::", mp_nlri3),
NewPathAttributeMpReachNLRI("129.1.1.1", mp_nlri4),
NewPathAttributeMpUnreachNLRI(mp_nlri),
//NewPathAttributeMpReachNLRI("112.22.2.0", []AddrPrefixInterface{}),
//NewPathAttributeMpUnreachNLRI([]AddrPrefixInterface{}),
&PathAttributeUnknown{
PathAttribute: PathAttribute{
Flags: BGP_ATTR_FLAG_TRANSITIVE,
Type: 100,
Value: []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9},
},
},
}
n := []NLRInfo{*NewNLRInfo(24, "13.2.3.1")}
return NewBGPUpdateMessage(w, p, n)
}
func Test_Message(t *testing.T) {
l := []*BGPMessage{keepalive(), notification(), refresh(), open(), update()}
for _, m := range l {
buf1, _ := m.Serialize()
t.Log("LEN =", len(buf1))
msg, err := ParseBGPMessage(buf1)
if err != nil {
t.Error(err)
}
buf2, _ := msg.Serialize()
if bytes.Compare(buf1, buf2) == 0 {
t.Log("OK")
} else {
t.Error("Something wrong")
t.Error(len(buf1), &m, buf1)
t.Error(len(buf2), &msg, buf2)
}
}
}
func Test_IPAddrPrefixString(t *testing.T) {
ipv4 := NewIPAddrPrefix(24, "129.6.10.0")
assert.Equal(t, "129.6.10.0/24", ipv4.String())
ipv6 := NewIPv6AddrPrefix(18, "3343:faba:3903::1")
assert.Equal(t, "3343:faba:3903::1/18", ipv6.String())
ipv6 = NewIPv6AddrPrefix(18, "3343:faba:3903::0")
assert.Equal(t, "3343:faba:3903::/18", ipv6.String())
}
func Test_RouteTargetMembershipNLRIString(t *testing.T) {
r := &RouteTargetMembershipNLRI{}
assert := assert.New(t)
// TwoOctetAsSpecificExtended
buf := make([]byte, 12)
binary.BigEndian.PutUint32(buf[:4], 65546)
buf[4] = 0x00 // typehigh
binary.BigEndian.PutUint16(buf[6:8], 65000)
binary.BigEndian.PutUint32(buf[8:], 65546)
r.DecodeFromBytes(buf)
assert.Equal("65546:65000:65546/96", r.String())
// IPv4AddressSpecificExtended
binary.BigEndian.PutUint32(buf[:4], 65546)
buf[4] = 0x01 // typehigh
ip := net.ParseIP("10.0.0.1").To4()
copy(buf[6:10], []byte(ip))
binary.BigEndian.PutUint16(buf[10:], 65000)
r.DecodeFromBytes(buf)
assert.Equal("65546:10.0.0.1:65000/96", r.String())
// FourOctetAsSpecificExtended
binary.BigEndian.PutUint32(buf[:4], 65546)
buf[4] = 0x02 // typehigh
buf[5] = 0x01 // subtype
binary.BigEndian.PutUint32(buf[6:], 65546)
binary.BigEndian.PutUint16(buf[10:], 65000)
r.DecodeFromBytes(buf)
assert.Equal("65546:1.10:65000/96", r.String())
// OpaqueExtended
binary.BigEndian.PutUint32(buf[:4], 65546)
buf[4] = 0x03 // typehigh
binary.BigEndian.PutUint32(buf[8:], 1000000)
r.DecodeFromBytes(buf)
assert.Equal("65546:281479272677952/96", r.String())
// Unknown
binary.BigEndian.PutUint32(buf[:4], 65546)
buf[4] = 0x04 // typehigh
binary.BigEndian.PutUint32(buf[8:], 1000000)
r.DecodeFromBytes(buf)
assert.Equal("65546:281479272677952/96", r.String())
}
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