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Commit c4f38982 authored by Marcus Weiner's avatar Marcus Weiner
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Test decode of hello packets

parent e272abf5
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1 merge request!2Packet/ospfv3
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protocols/ospf/packetv3/packet_test.go
+ 252
− 1
View file @ c4f38982
......@@ -7,8 +7,11 @@ import (
"os"
"testing"
"github.com/bio-routing/bio-rd/net"
ospf "github.com/bio-routing/bio-rd/protocols/ospf/packetv3"
"github.com/bio-routing/bio-rd/protocols/ospf/packetv3/fixtures"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
var files = []string{
......@@ -27,7 +30,7 @@ func init() {
dir = cwd + "/fixtures/"
}
func TestDecode(t *testing.T) {
func TestDecodeDumps(t *testing.T) {
for _, path := range files {
t.Run(path, func(t *testing.T) {
testDecodeFile(t, dir+path)
......@@ -66,3 +69,251 @@ func testDecodeFile(t *testing.T, path string) {
packetCount++
}
}
type test struct {
name string
input []byte
wantFail bool
expected interface{}
}
func TestDecode(t *testing.T) {
tests := []test{
{
name: "Hello/Default",
input: []byte{
// Header
3, // Version
1, // Type: Hello
0, 36, // Length
3, 3, 3, 3, // Source Router
0, 0, 0, 0, // Area ID
0x94, 0x1c, // Checksum
0, // Instance ID
0, // Reserved
// Payload (Hello)
0, 0, 0, 6, // Interface ID
100, // Router Prio
0, // Reserved
0, 0x13, // Options: R, E, V6
0, 30, // Hello Interval
0, 120, // Dead Interval
0, 0, 0, 0, // Designated Router
0, 0, 0, 0, // Backup Designated Router
},
expected: &ospf.OSPFv3Message{
Version: 3,
Type: ospf.MsgTypeHello,
Checksum: 0x941c,
PacketLength: 36,
RouterID: ospf.ID(net.IPv4FromOctets(3, 3, 3, 3).Ptr().ToUint32()),
AreaID: 0,
InstanceID: 0,
Body: &ospf.Hello{
InterfaceID: 6,
RouterPriority: 100,
HelloInterval: 30,
RouterDeadInterval: 120,
Options: ospf.OptionsFromFlags(ospf.RouterOptR, ospf.RouterOptE, ospf.RouterOptV6),
},
},
},
{
name: "Hello/InvalidLength",
input: []byte{
// Header
3, // Version
1, // Type: Hello
0, 38, // Length (invalid, expecting 36)
3, 3, 3, 3, // Source Router
0, 0, 0, 0, // Area ID
0x94, 0x1a, // Checksum
0, // Instance ID
0, // Reserved
// Payload (20 bytes)
0, 0, 0, 6, 100, 0, 0, 0x13, 0, 30, 0, 120, 0, 0, 0, 0, 0, 0, 0, 0,
},
wantFail: true,
},
{
name: "Hello/InvalidChecksum",
input: []byte{
// Header
3, // Version
1, // Type: Hello
0, 36, // Length
3, 3, 3, 3, // Source Router
0, 0, 0, 0, // Area ID
0x94, 0x1d, // Checksum (invalid)
0, // Instance ID
0, // Reserved
// Payload (20 bytes)
0, 0, 0, 6, 100, 0, 0, 0x13, 0, 30, 0, 120, 0, 0, 0, 0, 0, 0, 0, 0,
},
wantFail: true,
},
{
name: "Hello/WithNeighbors",
input: []byte{
// Header
3, // Version
1, // Type: Hello
0, 44, // Length
3, 3, 3, 3, // Source Router
0, 0, 0, 0, // Area ID
0x8e, 0x06, // Checksum
0, // Instance ID
0, // Reserved
// Payload (Hello)
0, 0, 0, 6, // Interface ID
100, // Router Prio
0, // Reserved
0, 0x13, // Options: R, E, V6
0, 30, // Hello Interval
0, 120, // Dead Interval
0, 0, 0, 0, // Designated Router
0, 0, 0, 0, // Backup Designated Router
1, 1, 1, 1, // Neighbor 1
2, 2, 2, 2, // Neighbor 2
},
expected: &ospf.OSPFv3Message{
Version: 3,
Type: ospf.MsgTypeHello,
Checksum: 0x8e06,
PacketLength: 44,
RouterID: ospf.ID(net.IPv4FromOctets(3, 3, 3, 3).Ptr().ToUint32()),
AreaID: 0,
InstanceID: 0,
Body: &ospf.Hello{
InterfaceID: 6,
RouterPriority: 100,
HelloInterval: 30,
RouterDeadInterval: 120,
Options: ospf.OptionsFromFlags(ospf.RouterOptR, ospf.RouterOptE, ospf.RouterOptV6),
Neighbors: []ospf.ID{
ospf.ID(net.IPv4FromOctets(1, 1, 1, 1).Ptr().ToUint32()),
ospf.ID(net.IPv4FromOctets(2, 2, 2, 2).Ptr().ToUint32()),
},
},
},
},
{
name: "Hello/WithDR",
input: []byte{
// Header
3, // Version
1, // Type: Hello
0, 44, // Length
3, 3, 3, 3, // Source Router
0, 0, 0, 0, // Area ID
0x8c, 0x04, // Checksum
0, // Instance ID
0, // Reserved
// Payload (Hello)
0, 0, 0, 6, // Interface ID
100, // Router Prio
0, // Reserved
0, 0x13, // Options: R, E, V6
0, 30, // Hello Interval
0, 120, // Dead Interval
1, 1, 1, 1, // Designated Router
0, 0, 0, 0, // Backup Designated Router
1, 1, 1, 1, // Neighbor 1
2, 2, 2, 2, // Neighbor 2
},
expected: &ospf.OSPFv3Message{
Version: 3,
Type: ospf.MsgTypeHello,
Checksum: 0x8c04,
PacketLength: 44,
RouterID: ospf.ID(net.IPv4FromOctets(3, 3, 3, 3).Ptr().ToUint32()),
AreaID: 0,
InstanceID: 0,
Body: &ospf.Hello{
InterfaceID: 6,
RouterPriority: 100,
HelloInterval: 30,
RouterDeadInterval: 120,
Options: ospf.OptionsFromFlags(ospf.RouterOptR, ospf.RouterOptE, ospf.RouterOptV6),
DesignatedRouterID: ospf.ID(net.IPv4FromOctets(1, 1, 1, 1).Ptr().ToUint32()),
Neighbors: []ospf.ID{
ospf.ID(net.IPv4FromOctets(1, 1, 1, 1).Ptr().ToUint32()),
ospf.ID(net.IPv4FromOctets(2, 2, 2, 2).Ptr().ToUint32()),
},
},
},
},
{
name: "Hello/WithBDR",
input: []byte{
// Header
3, // Version
1, // Type: Hello
0, 44, // Length
3, 3, 3, 3, // Source Router
0, 0, 0, 0, // Area ID
0x88, 0x00, // Checksum
0, // Instance ID
0, // Reserved
// Payload (Hello)
0, 0, 0, 6, // Interface ID
100, // Router Prio
0, // Reserved
0, 0x13, // Options: R, E, V6
0, 30, // Hello Interval
0, 120, // Dead Interval
1, 1, 1, 1, // Designated Router
2, 2, 2, 2, // Backup Designated Router
1, 1, 1, 1, // Neighbor 1
2, 2, 2, 2, // Neighbor 2
},
expected: &ospf.OSPFv3Message{
Version: 3,
Type: ospf.MsgTypeHello,
Checksum: 0x8800,
PacketLength: 44,
RouterID: ospf.ID(net.IPv4FromOctets(3, 3, 3, 3).Ptr().ToUint32()),
AreaID: 0,
InstanceID: 0,
Body: &ospf.Hello{
InterfaceID: 6,
RouterPriority: 100,
HelloInterval: 30,
RouterDeadInterval: 120,
Options: ospf.OptionsFromFlags(ospf.RouterOptR, ospf.RouterOptE, ospf.RouterOptV6),
DesignatedRouterID: ospf.ID(net.IPv4FromOctets(1, 1, 1, 1).Ptr().ToUint32()),
BackupDesignatedRouterID: ospf.ID(net.IPv4FromOctets(2, 2, 2, 2).Ptr().ToUint32()),
Neighbors: []ospf.ID{
ospf.ID(net.IPv4FromOctets(1, 1, 1, 1).Ptr().ToUint32()),
ospf.ID(net.IPv4FromOctets(2, 2, 2, 2).Ptr().ToUint32()),
},
},
},
},
}
src, err := net.IPFromString("fe80::3")
require.NoError(t, err)
dst, err := net.IPFromString("ff02::5")
require.NoError(t, err)
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
buf := bytes.NewBuffer(test.input)
msg, _, err := ospf.DeserializeOSPFv3Message(buf, src, dst)
if test.wantFail {
require.Error(t, err)
return
}
require.NoError(t, err)
assert.Equal(t, test.expected, msg)
})
}
}
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