func TestMessageV3(t *testing.T) {
pdu := snmpgo.NewPdu(snmpgo.V3, snmpgo.GetRequest)
msg := snmpgo.ToMessageV3(snmpgo.NewMessage(snmpgo.V3, pdu))
b, _ := pdu.Marshal()
msg.SetPduBytes(b)
msg.MessageId = 123
msg.MessageMaxSize = 321
msg.SetReportable(true)
msg.SetPrivacy(true)
msg.SetAuthentication(true)
msg.SecurityModel = 3
msg.AuthEngineId = []byte{0x80, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07}
msg.AuthEngineBoots = 456
msg.AuthEngineTime = 654
msg.UserName = []byte("User")
msg.AuthParameter = []byte{0xaa, 0xbb, 0xcc}
msg.PrivParameter = []byte{0xdd, 0xee, 0xff}
expBuf := []byte{
0x30, 0x4b, 0x02, 0x01, 0x03, 0x30, 0x0d, 0x02, 0x01, 0x7b,
0x02, 0x02, 0x01, 0x41, 0x04, 0x01, 0x07, 0x02, 0x01, 0x03,
0x04, 0x24, 0x30, 0x22, 0x04, 0x08, 0x80, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x02, 0x02, 0x01, 0xc8, 0x02, 0x02, 0x02, 0x8e, 0x04, 0x04, 0x55, 0x73, 0x65, 0x72,
0x04, 0x03, 0xaa, 0xbb, 0xcc, 0x04, 0x03, 0xdd, 0xee, 0xff,
0x30, 0x11, 0x04, 0x00, 0x04, 0x00, 0xa0, 0x0b, 0x02, 0x01,
0x00, 0x02, 0x01, 0x00, 0x02, 0x01, 0x00, 0x30, 0x00,
}
buf, err := msg.Marshal()
if err != nil {
t.Fatal("Marshal() : %v", err)
}
if !bytes.Equal(expBuf, buf) {
t.Errorf("Marshal() - expected [%s], actual [%s]",
snmpgo.ToHexStr(expBuf, " "), snmpgo.ToHexStr(buf, " "))
}
expStr := `{"Version": "3", "GlobalData": {"MessageId": "123", "MessageMaxSize": "321", ` +
`"MessageFlags": "apr", "SecurityModel": "USM"}, "SecurityParameter": ` +
`{"AuthEngineId": "8001020304050607", "AuthEngineBoots": "456", ` +
`"AuthEngineTime": "654", "UserName": "******", "AuthParameter": "aa:bb:cc", ` +
`"PrivParameter": "dd:ee:ff"}, "Pdu": {"Type": "GetRequest", "RequestId": "0", ` +
`"ErrorStatus": "NoError", "ErrorIndex": "0", "ContextEngineId": "", ` +
`"ContextName": "", "VarBinds": []}}`
m := snmpgo.NewMessage(snmpgo.V3, pdu)
rest, err := m.Unmarshal(buf)
if len(rest) != 0 || err != nil {
t.Errorf("Unmarshal() - len[%d] err[%v]", len(rest), err)
}
if expStr != m.String() {
t.Errorf("Unmarshal() - expected [%s], actual [%s]", expStr, m.String())
}
}
func TestMessageProcessingV3(t *testing.T) {
snmp, _ := snmpgo.NewSNMP(snmpgo.SNMPArguments{
Version: snmpgo.V3,
UserName: "******",
SecurityLevel: snmpgo.AuthPriv,
AuthPassword: "******",
AuthProtocol: snmpgo.Md5,
PrivPassword: "******",
PrivProtocol: snmpgo.Des,
})
mp := snmpgo.NewMessageProcessing(snmpgo.V3)
usm := snmpgo.ToUsm(mp.Security())
usm.AuthKey = []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
usm.PrivKey = []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
pdu := snmpgo.NewPdu(snmpgo.V3, snmpgo.GetRequest)
msg, err := mp.PrepareOutgoingMessage(snmp, pdu)
if err != nil {
t.Errorf("PrepareOutgoingMessage() - has error %v", err)
}
if len(msg.PduBytes()) == 0 {
t.Error("PrepareOutgoingMessage() - pdu bytes")
}
if pdu.RequestId() == 0 {
t.Error("PrepareOutgoingMessage() - request id")
}
msgv3 := snmpgo.ToMessageV3(msg)
if msgv3.MessageId == 0 {
t.Error("PrepareOutgoingMessage() - message id")
}
if !msgv3.Reportable() || !msgv3.Authentication() || !msgv3.Privacy() {
t.Error("PrepareOutgoingMessage() - security flag")
}
msgv3.SetAuthentication(false)
msgv3.SetPrivacy(false)
msgv3.AuthEngineId = []byte{0, 0, 0, 0, 0}
requestId := pdu.RequestId()
messageId := msgv3.MessageId
_, err = mp.PrepareDataElements(snmp, msg, []byte{0x00, 0x00})
if err == nil {
t.Error("PrepareDataElements() - message unmarshal error")
}
b, _ := msg.Marshal()
_, err = mp.PrepareDataElements(snmp, msg, b)
if err == nil {
t.Error("PrepareDataElements() - pdu type check")
}
pdu = snmpgo.NewPdu(snmpgo.V3, snmpgo.GetResponse)
rmsg := snmpgo.ToMessageV3(snmpgo.NewMessage(snmpgo.V3, pdu))
b, _ = rmsg.Marshal()
_, err = mp.PrepareDataElements(snmp, msg, b)
if err == nil {
t.Error("PrepareDataElements() - message id check")
}
rmsg = snmpgo.ToMessageV3(snmpgo.NewMessage(snmpgo.V3, pdu))
rmsg.AuthEngineId = []byte{0, 0, 0, 0, 0}
rmsg.MessageId = messageId
b, _ = rmsg.Marshal()
_, err = mp.PrepareDataElements(snmp, msg, b)
if err == nil {
t.Error("PrepareDataElements() - security model check")
}
pdu.(*snmpgo.ScopedPdu).ContextEngineId = rmsg.AuthEngineId
pduBytes, _ := pdu.Marshal()
rmsg.SetPduBytes(pduBytes)
rmsg.SecurityModel = 3
b, _ = rmsg.Marshal()
_, err = mp.PrepareDataElements(snmp, msg, b)
if err == nil {
t.Error("PrepareDataElements() - request id check")
}
pdu.SetRequestId(requestId)
pduBytes, _ = pdu.Marshal()
rmsg.SetPduBytes(pduBytes)
b, _ = rmsg.Marshal()
_, err = mp.PrepareDataElements(snmp, msg, b)
if err != nil {
t.Errorf("PrepareDataElements() - has error %v", err)
}
}
func TestUsm(t *testing.T) {
expUser := []byte("myUser")
expEngId := []byte{0x80, 0x00, 0x00, 0x00, 0x01}
expCtxId := []byte{0x80, 0x00, 0x00, 0x00, 0x05}
expCtxName := "myName"
snmp, _ := snmpgo.NewSNMP(snmpgo.SNMPArguments{
Version: snmpgo.V3,
UserName: string(expUser),
SecurityLevel: snmpgo.AuthPriv,
AuthPassword: "******",
AuthProtocol: snmpgo.Md5,
PrivPassword: "******",
PrivProtocol: snmpgo.Des,
ContextEngineId: hex.EncodeToString(expCtxId),
ContextName: expCtxName,
})
sec := snmpgo.NewUsm()
pdu := snmpgo.NewPdu(snmpgo.V3, snmpgo.GetRequest)
spdu := pdu.(*snmpgo.ScopedPdu)
smsg := snmpgo.ToMessageV3(snmpgo.NewMessage(snmpgo.V3, pdu))
smsg.SetAuthentication(false)
smsg.SetPrivacy(false)
// Discovery
err := sec.GenerateRequestMessage(snmp, smsg)
if err != nil {
t.Errorf("GenerateRequestMessage() - has error %v", err)
}
if !bytes.Equal(spdu.ContextEngineId, expCtxId) {
t.Errorf("GenerateRequestMessage() - expected [%s], actual [%s]",
expCtxId, spdu.ContextEngineId)
}
if string(spdu.ContextName) != expCtxName {
t.Errorf("GenerateRequestMessage() - expected [%s], actual [%s]",
expCtxName, string(spdu.ContextName))
}
if len(smsg.PduBytes()) == 0 {
t.Error("GenerateRequestMessage() - pdu marshal")
}
pdu = snmpgo.NewPdu(snmpgo.V3, snmpgo.Report)
rmsg := snmpgo.ToMessageV3(snmpgo.NewMessage(snmpgo.V3, pdu))
rmsg.SetPduBytes(smsg.PduBytes())
err = sec.ProcessIncomingMessage(snmp, smsg, rmsg)
if err == nil {
t.Error("ProcessIncomingMessage() - engineId check")
}
rmsg.AuthEngineId = expEngId
rmsg.AuthEngineBoots = -1
err = sec.ProcessIncomingMessage(snmp, smsg, rmsg)
if err == nil {
t.Error("ProcessIncomingMessage() - boots check")
}
rmsg.AuthEngineBoots = 1
rmsg.AuthEngineTime = -1
err = sec.ProcessIncomingMessage(snmp, smsg, rmsg)
if err == nil {
t.Error("ProcessIncomingMessage() - time check")
}
rmsg.AuthEngineTime = 1
err = sec.ProcessIncomingMessage(snmp, smsg, rmsg)
if err != nil {
t.Errorf("ProcessIncomingMessage() - has error %v", err)
}
if !bytes.Equal(sec.AuthEngineId, expEngId) {
t.Errorf("ProcessIncomingMessage() - expected [%s], actual [%s]",
sec.AuthEngineId, expEngId)
}
if len(sec.AuthKey) == 0 {
t.Error("ProcessIncomingMessage() - authKey")
}
if len(sec.PrivKey) == 0 {
t.Error("ProcessIncomingMessage() - privKey")
}
// Synchronize
smsg.SetAuthentication(true)
smsg.SetPrivacy(true)
err = sec.GenerateRequestMessage(snmp, smsg)
if err != nil {
t.Errorf("GenerateRequestMessage() - has error %v", err)
}
if !bytes.Equal(smsg.UserName, expUser) {
t.Errorf("GenerateRequestMessage() - expected [%s], actual [%s]",
expUser, smsg.UserName)
}
if !bytes.Equal(smsg.AuthEngineId, expEngId) {
t.Errorf("GenerateRequestMessage() - expected [%s], actual [%s]",
expEngId, smsg.AuthEngineId)
}
if len(smsg.PrivParameter) == 0 {
t.Error("GenerateRequestMessage() - privParameter")
}
if len(smsg.AuthParameter) == 0 {
t.Error("GenerateRequestMessage() - authParameter")
}
pdu = snmpgo.NewPdu(snmpgo.V3, snmpgo.Report)
rmsg = snmpgo.ToMessageV3(snmpgo.NewMessage(snmpgo.V3, pdu))
rmsg.SetAuthentication(true)
rmsg.SetPrivacy(true)
rmsg.SetPduBytes(smsg.PduBytes())
rmsg.AuthEngineId = []byte("foobar")
rmsg.AuthEngineBoots = smsg.AuthEngineBoots
rmsg.AuthEngineTime = smsg.AuthEngineTime
rmsg.PrivParameter = smsg.PrivParameter
rmsg.AuthParameter = smsg.AuthParameter
err = sec.ProcessIncomingMessage(snmp, smsg, rmsg)
if err == nil {
t.Error("ProcessIncomingMessage() - userName check")
}
rmsg.UserName = expUser
err = sec.ProcessIncomingMessage(snmp, smsg, rmsg)
if err == nil {
t.Error("ProcessIncomingMessage() - authEngine check")
}
rmsg.AuthEngineId = expEngId
err = sec.ProcessIncomingMessage(snmp, smsg, rmsg)
if err != nil {
t.Errorf("ProcessIncomingMessage() - has error %v", err)
}
if sec.AuthEngineBoots != rmsg.AuthEngineBoots {
t.Error("ProcessIncomingMessage() - engineBoots")
}
if sec.AuthEngineTime != rmsg.AuthEngineTime {
t.Error("ProcessIncomingMessage() - engineTime")
}
// Request
sec.AuthEngineBoots = 1
sec.AuthEngineTime = 1
err = sec.GenerateRequestMessage(snmp, smsg)
if err != nil {
t.Errorf("GenerateRequestMessage() - has error %v", err)
}
if smsg.AuthEngineBoots != sec.AuthEngineBoots {
t.Errorf("GenerateRequestMessage() - expected [%d], actual [%d]",
sec.AuthEngineBoots, smsg.AuthEngineBoots)
}
if smsg.AuthEngineTime != sec.AuthEngineTime {
t.Errorf("GenerateRequestMessage() - expected [%d], actual [%d]",
sec.AuthEngineTime, smsg.AuthEngineTime)
}
pdu = snmpgo.NewPdu(snmpgo.V3, snmpgo.GetResponse)
spdu = pdu.(*snmpgo.ScopedPdu)
rmsg = snmpgo.ToMessageV3(snmpgo.NewMessage(snmpgo.V3, pdu))
rmsg.AuthEngineId = expEngId
rmsg.AuthEngineBoots = smsg.AuthEngineBoots
rmsg.AuthEngineTime = smsg.AuthEngineTime
rmsg.UserName = expUser
// set PduBytes with GetResponse
b, _ := spdu.Marshal()
rmsg.SetPduBytes(b)
err = sec.ProcessIncomingMessage(snmp, smsg, rmsg)
if err == nil {
t.Error("ProcessIncomingMessage() - contextEngineId check")
}
// set PduBytes with ContextEngineId
spdu.ContextEngineId = expCtxId
b, _ = spdu.Marshal()
rmsg.SetPduBytes(b)
err = sec.ProcessIncomingMessage(snmp, smsg, rmsg)
if err == nil {
t.Error("ProcessIncomingMessage() - contextName check")
}
// set PduBytes with ContextName
spdu.ContextName = []byte(expCtxName)
b, _ = spdu.Marshal()
rmsg.SetPduBytes(b)
err = sec.ProcessIncomingMessage(snmp, smsg, rmsg)
if err == nil {
t.Error("ProcessIncomingMessage() - response authenticate check")
}
}