forked from k-sone/snmpgo
/
security_test.go
351 lines (309 loc) · 10 KB
/
security_test.go
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package snmpgo_test
import (
"bytes"
"encoding/hex"
"math"
"testing"
"time"
"github.com/k-sone/snmpgo"
)
// RFC3414 A.3
func TestPasswordToKey(t *testing.T) {
password := "maplesyrup"
engineId := []byte{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x02,
}
expBuf := []byte{
0x52, 0x6f, 0x5e, 0xed, 0x9f, 0xcc, 0xe2, 0x6f,
0x89, 0x64, 0xc2, 0x93, 0x07, 0x87, 0xd8, 0x2b,
}
key := snmpgo.PasswordToKey(snmpgo.Md5, password, engineId)
if !bytes.Equal(expBuf, key) {
t.Errorf("passwordToKey(Md5) - expected [%s], actual [%s]",
snmpgo.ToHexStr(expBuf, " "), snmpgo.ToHexStr(key, " "))
}
expBuf = []byte{
0x66, 0x95, 0xfe, 0xbc, 0x92, 0x88, 0xe3, 0x62, 0x82, 0x23,
0x5f, 0xc7, 0x15, 0x1f, 0x12, 0x84, 0x97, 0xb3, 0x8f, 0x3f,
}
key = snmpgo.PasswordToKey(snmpgo.Sha, password, engineId)
if !bytes.Equal(expBuf, key) {
t.Errorf("passwordToKey(Aes) - expected [%s], actual [%s]",
snmpgo.ToHexStr(expBuf, " "), snmpgo.ToHexStr(key, " "))
}
}
func TestCipher(t *testing.T) {
original := []byte("my private message.")
password := "maplesyrup"
engineId := []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}
engineBoots := int32(100)
engineTime := int32(1234567)
key := snmpgo.PasswordToKey(snmpgo.Sha, password, engineId)
cipher, priv, err := snmpgo.EncryptDES(original, key, engineBoots, 100)
if err != nil {
t.Errorf("DES Encrypt err %v", err)
}
result, err := snmpgo.DecryptDES(cipher, key, priv)
if err != nil {
t.Errorf("DES Decrypt err %v", err)
}
if bytes.Equal(original, result) {
t.Errorf("DES Encrypt, Decrypt - expected [%s], actual [%s]", original, result)
}
cipher, priv, err = snmpgo.EncryptAES(original, key, engineBoots, engineTime, 100)
if err != nil {
t.Errorf("AES Encrypt err %v", err)
}
result, err = snmpgo.DecryptAES(cipher, key, priv, engineBoots, engineTime)
if err != nil {
t.Errorf("AES Decrypt err %v", err)
}
if bytes.Equal(original, result) {
t.Errorf("AES Encrypt, Decrypt - expected [%s], actual [%s]", original, result)
}
}
func TestCommunity(t *testing.T) {
expCom := "public"
snmp, _ := snmpgo.NewSNMP(snmpgo.SNMPArguments{
Version: snmpgo.V2c,
Community: expCom,
})
sec := snmpgo.NewCommunity()
pdu := snmpgo.NewPdu(snmpgo.V2c, snmpgo.GetRequest)
smsg := snmpgo.ToMessageV1(snmpgo.NewMessage(snmpgo.V2c, pdu))
err := sec.GenerateRequestMessage(snmp, smsg)
if err != nil {
t.Errorf("GenerateRequestMessage() - has error %v", err)
}
if !bytes.Equal(smsg.Community, []byte(expCom)) {
t.Errorf("GenerateRequestMessage() - expected [%s], actual [%s]", expCom, smsg.Community)
}
if len(smsg.PduBytes()) == 0 {
t.Error("GenerateRequestMessage() - pdu marshal")
}
pdu = snmpgo.NewPdu(snmpgo.V2c, snmpgo.GetResponse)
rmsg := snmpgo.ToMessageV1(snmpgo.NewMessage(snmpgo.V2c, pdu))
err = sec.ProcessIncomingMessage(snmp, smsg, rmsg)
if err == nil {
t.Error("ProcessIncomingMessage() - community check")
}
rmsg.Community = []byte(expCom)
rmsg.SetPduBytes(smsg.PduBytes())
err = sec.ProcessIncomingMessage(snmp, smsg, rmsg)
if err != nil {
t.Errorf("ProcessIncomingMessage() - 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: "aaaaaaaa",
AuthProtocol: snmpgo.Md5,
PrivPassword: "bbbbbbbb",
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")
}
}
func TestUsmUpdateEngineBootsTime(t *testing.T) {
sec := snmpgo.NewUsm()
sec.UpdatedTime = time.Unix(time.Now().Unix()-int64(10), 0)
err := sec.UpdateEngineBootsTime()
if err != nil || sec.AuthEngineTime < 9 || sec.AuthEngineTime > 11 {
t.Error("EngineBootsTime() - update authEnginetime")
}
sec.UpdatedTime = time.Unix(time.Now().Unix()-int64(10), 0)
sec.AuthEngineTime = math.MaxInt32
err = sec.UpdateEngineBootsTime()
if err != nil || sec.AuthEngineBoots != 1 ||
(sec.AuthEngineTime < 9 || sec.AuthEngineTime > 11) {
t.Error("EngineBootsTime() - carry-over authEngineBoots")
}
sec.UpdatedTime = time.Unix(time.Now().Unix()-int64(10), 0)
sec.AuthEngineBoots = math.MaxInt32 - 1
sec.AuthEngineTime = math.MaxInt32
err = sec.UpdateEngineBootsTime()
if err == nil {
t.Error("EngineBootsTime() - max authEngineBoots")
}
}
func TestUsmTimeliness(t *testing.T) {
sec := snmpgo.NewUsm()
err := sec.CheckTimeliness(math.MaxInt32, 0)
if err == nil {
t.Error("Timeliness() - max authEngineBoots")
}
sec.AuthEngineBoots = 1
err = sec.CheckTimeliness(0, 0)
if err == nil {
t.Error("Timeliness() - lose authEngineBoots")
}
sec.AuthEngineBoots = 0
err = sec.CheckTimeliness(0, 151)
if err == nil {
t.Error("Timeliness() - lose authEngineTime")
}
err = sec.CheckTimeliness(0, 150)
if err != nil {
t.Errorf("Timeliness() - has error %v", err)
}
}