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|
package l2tp
import (
"bytes"
"testing"
)
type msgInfo struct {
version ProtocolVersion
ns, nr, tid, sid uint16
ccid uint32
navps int
msgType avpMsgType
}
func TestParseMessageBuffer(t *testing.T) {
cases := []struct {
in []byte
want []msgInfo
}{
{
in: []byte{
0xc8, 0x02, 0x00, 0x14, 0x00, 0x01, 0x00, 0x00,
0x00, 0x01, 0x00, 0x01, 0x80, 0x08, 0x00, 0x00,
0x00, 0x00, 0x00, 0x06,
},
want: []msgInfo{
{version: ProtocolVersion2, ns: 1, nr: 1, tid: 1, sid: 0, navps: 1, msgType: avpMsgTypeHello},
},
},
{
in: []byte{
0xc8, 0x02, 0x00, 0x0c, 0x00, 0x01, 0x00, 0x00,
0x00, 0x01, 0x00, 0x01,
},
want: []msgInfo{
{version: ProtocolVersion2, tid: 1, sid: 0, ns: 1, nr: 1, navps: 0, msgType: avpMsgTypeAck},
},
},
{
in: []byte{
0xc8, 0x03, 0x00, 0x7c, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x80, 0x08, 0x00, 0x00,
0x00, 0x00, 0x00, 0x01, 0x80, 0x0c, 0x00, 0x00,
0x00, 0x07, 0x6f, 0x70, 0x65, 0x6e, 0x76, 0x33,
0x00, 0x34, 0x00, 0x00, 0x00, 0x08, 0x70, 0x72,
0x6f, 0x6c, 0x32, 0x74, 0x70, 0x20, 0x31, 0x2e,
0x37, 0x2e, 0x33, 0x20, 0x4c, 0x69, 0x6e, 0x75,
0x78, 0x2d, 0x33, 0x2e, 0x31, 0x33, 0x2e, 0x30,
0x2d, 0x33, 0x30, 0x2d, 0x67, 0x65, 0x6e, 0x65,
0x72, 0x69, 0x63, 0x20, 0x28, 0x78, 0x38, 0x36,
0x5f, 0x36, 0x34, 0x29, 0x80, 0x08, 0x00, 0x00,
0x00, 0x0a, 0x00, 0x0a, 0x00, 0x0a, 0x00, 0x00,
0x00, 0x3c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a,
0x00, 0x00, 0x00, 0x3d, 0x28, 0x46, 0xf1, 0x81,
0x00, 0x0c, 0x00, 0x00, 0x00, 0x3e, 0x00, 0x07,
0x00, 0x05, 0x00, 0x04,
},
want: []msgInfo{
{version: ProtocolVersion3, ns: 0, nr: 0, ccid: 0, navps: 7, msgType: avpMsgTypeSccrq},
},
},
}
for _, c := range cases {
got, err := parseMessageBuffer(c.in)
if err == nil {
for i, g := range got {
// common checks
if g.protocolVersion() != c.want[i].version {
t.Errorf("ProtocolVersion() == %q, want %q", g.protocolVersion(), c.want[i].version)
}
if g.getLen() != len(c.in) {
t.Errorf("Len() == %q, want %q", g.getLen(), len(c.in))
}
if g.ns() != c.want[i].ns {
t.Errorf("Ns() == %q, want %q", g.ns(), c.want[i].ns)
}
if g.nr() != c.want[i].nr {
t.Errorf("Nr() == %q, want %q", g.nr(), c.want[i].nr)
}
if len(g.getAvps()) != c.want[i].navps {
t.Errorf("AVP count failed: got %q, want %q", len(g.getAvps()), c.want[i].navps)
}
if g.getType() != c.want[i].msgType {
t.Errorf("Type() == %q, want %q", g.getType(), c.want[i].msgType)
}
// version specifics
switch c.want[i].version {
case ProtocolVersion2:
v2msg, ok := g.(*v2ControlMessage)
if ok {
if v2msg.Tid() != c.want[i].tid {
t.Errorf("Tid() == %q, want %q", v2msg.Tid(), c.want[i].tid)
}
if v2msg.Sid() != c.want[i].sid {
t.Errorf("Sid() == %q, want %q", v2msg.Sid(), c.want[i].sid)
}
} else {
t.Errorf("Expected V2ControlMessage, but didn't receive one")
}
case ProtocolVersion3:
v3msg, ok := g.(*v3ControlMessage)
if ok {
if v3msg.ControlConnectionID() != c.want[i].ccid {
t.Errorf("ControlConnectionID() == %q, want %q", v3msg.ControlConnectionID(), c.want[i].ccid)
}
} else {
t.Errorf("Expected V3ControlMessage, but didn't receive one")
}
}
}
} else {
t.Errorf("parseMessageBuffer(%q) failed: %q", c.in, err)
}
}
}
type msgTestAvpMetadata struct {
isMandatory, isHidden bool
avpType avpType
vendorID avpVendorID
dataType avpDataType
data interface{}
}
func TestV2MessageBuild(t *testing.T) {
cases := []struct {
tid ControlConnID
sid ControlConnID
avps []msgTestAvpMetadata
}{
{
tid: 42, sid: 42, avps: []msgTestAvpMetadata{
{true, false, avpTypeMessage, vendorIDIetf, avpDataTypeMsgID, avpMsgTypeHello},
},
},
}
for _, c := range cases {
msg, err := newV2ControlMessage(c.tid, c.sid, []avp{})
if err != nil {
t.Fatalf("newV2ControlMessage(%v, %v, []) said: %v", c.tid, c.sid, err)
}
for _, in := range c.avps {
avp, err := newAvp(in.vendorID, in.avpType, in.data)
if err != nil {
t.Fatalf("newAvp(%v, %v, %v) said: %v", in.vendorID, in.avpType, in.data, err)
}
msg.appendAvp(avp)
}
if msg.getType() != c.avps[0].data {
t.Fatalf("%v != %v", msg.getType(), c.avps[0].data)
}
}
}
func TestV3MessageBuild(t *testing.T) {
cases := []struct {
ccid ControlConnID
avps []msgTestAvpMetadata
}{
{
ccid: 90210, avps: []msgTestAvpMetadata{
{true, false, avpTypeMessage, vendorIDIetf, avpDataTypeMsgID, avpMsgTypeHello},
},
},
}
for _, c := range cases {
msg, err := newV3ControlMessage(c.ccid, []avp{})
if err != nil {
t.Fatalf("newV3ControlMessage(%v, []) said: %v", c.ccid, err)
}
for _, in := range c.avps {
avp, err := newAvp(in.vendorID, in.avpType, in.data)
if err != nil {
t.Fatalf("newAvp(%v, %v, %v) said: %v", in.vendorID, in.avpType, in.data, err)
}
msg.appendAvp(avp)
}
if msg.getType() != c.avps[0].data {
t.Fatalf("%v != %v", msg.getType(), c.avps[0].data)
}
}
}
func TestParseEncode(t *testing.T) {
cases := []struct {
in []byte
}{
{in: []byte{
0xc8, 0x02, 0x00, 0x14, 0x00, 0x01, 0x00, 0x00,
0x00, 0x01, 0x00, 0x01, 0x80, 0x08, 0x00, 0x00,
0x00, 0x00, 0x00, 0x06,
},
},
}
for _, c := range cases {
got, err := parseMessageBuffer(c.in)
if err != nil {
t.Fatalf("parseMessageBuffer(%v) failed: %v", c.in, err)
}
if len(got) != 1 {
t.Fatalf("parseMessageBuffer(%v): wanted 1 message, got %d", c.in, len(got))
}
mb, err := got[0].toBytes()
if err != nil {
t.Fatalf("toBytes() failed: %v", err)
}
if !bytes.Equal(mb, c.in) {
t.Fatalf("toBytes(): wanted %v, got %v", c.in, mb)
}
}
}
func TestV2TunnelBuildValidate(t *testing.T) {
cases := []struct {
tcfg TunnelConfig
rc resultCode
buildersGood []func(*TunnelConfig, *resultCode) (*v2ControlMessage, error)
}{
{
// Currently the builders don't check data ranges, so
// all we're really doing is exercising the builder/validation
// code.
tcfg: TunnelConfig{},
rc: resultCode{},
buildersGood: []func(*TunnelConfig, *resultCode) (*v2ControlMessage, error){
func(tcfg *TunnelConfig, rc *resultCode) (*v2ControlMessage, error) {
return newV2Sccrq(tcfg)
},
func(tcfg *TunnelConfig, rc *resultCode) (*v2ControlMessage, error) {
return newV2Sccrp(tcfg)
},
func(tcfg *TunnelConfig, rc *resultCode) (*v2ControlMessage, error) {
return newV2Scccn(tcfg)
},
func(tcfg *TunnelConfig, rc *resultCode) (*v2ControlMessage, error) {
return newV2Stopccn(rc, tcfg)
},
func(tcfg *TunnelConfig, rc *resultCode) (*v2ControlMessage, error) {
return newV2Hello(tcfg)
},
},
},
}
for _, c := range cases {
for i, builder := range c.buildersGood {
msg, err := builder(&c.tcfg, &c.rc)
if err != nil {
t.Fatalf("good builder %v: %v %v: %v", i, c.tcfg, c.rc, err)
}
err = msg.validate()
if err != nil {
t.Fatalf("good builder validation %v: %v %v: %v", i, c.tcfg, c.rc, err)
}
}
}
}
|
