public static SecureAgentParameters GetSNMPV3Param(UdpTarget target, string communityString, securityModel secModel)
{
SecureAgentParameters _param = new SecureAgentParameters();
if (!target.Discovery(_param))
{
return(null);
}
switch (secModel.securityLevel)
{
case NetworkHelper.securityLvl.noAuthNoPriv:
_param.noAuthNoPriv(communityString);
break;
case NetworkHelper.securityLvl.authNoPriv:
if (secModel.authentificationProtocol == NetworkHelper.snmpProtocols.MD5)
{
_param.authNoPriv(communityString, AuthenticationDigests.MD5, SNMP_AUTH_SECRET);
}
else if (secModel.authentificationProtocol == NetworkHelper.snmpProtocols.SHA)
{
_param.authNoPriv(communityString, AuthenticationDigests.SHA1, SNMP_AUTH_SECRET);
}
break;
case NetworkHelper.securityLvl.authPriv:
if (secModel.authentificationProtocol == NetworkHelper.snmpProtocols.MD5 && secModel.privacyProtocol == NetworkHelper.snmpProtocols.AES)
{
_param.authPriv(SNMP_COMMUNITY_STRING, AuthenticationDigests.MD5, SNMP_AUTH_SECRET, PrivacyProtocols.AES128, SNMP_PRIV_SECRET);
}
else if (secModel.authentificationProtocol == NetworkHelper.snmpProtocols.MD5 && secModel.privacyProtocol == NetworkHelper.snmpProtocols.DES)
{
_param.authPriv(SNMP_COMMUNITY_STRING, AuthenticationDigests.MD5, SNMP_AUTH_SECRET, PrivacyProtocols.DES, SNMP_PRIV_SECRET);
}
else if (secModel.authentificationProtocol == NetworkHelper.snmpProtocols.SHA && secModel.privacyProtocol == NetworkHelper.snmpProtocols.AES)
{
_param.authPriv(SNMP_COMMUNITY_STRING, AuthenticationDigests.SHA1, SNMP_AUTH_SECRET, PrivacyProtocols.AES128, SNMP_PRIV_SECRET);
}
else if (secModel.authentificationProtocol == NetworkHelper.snmpProtocols.SHA && secModel.privacyProtocol == NetworkHelper.snmpProtocols.DES)
{
_param.authPriv(SNMP_COMMUNITY_STRING, AuthenticationDigests.SHA1, SNMP_AUTH_SECRET, PrivacyProtocols.DES, SNMP_PRIV_SECRET);
}
break;
}
return(_param);
}
private bool DiscoverAgents(IPAddress cameraAddress)
{
bool result = false;
System.Net.NetworkInformation.Ping ping = new System.Net.NetworkInformation.Ping();
var test = ping.Send(cameraAddress);
UdpTarget target = new UdpTarget(cameraAddress, 161, 5000, 3);
SecureAgentParameters param = new SecureAgentParameters();
if (!target.Discovery(param))
{
Console.WriteLine("Discovery failed. Unable to continue...");
target.Close();
}
else
{
param.SecurityName.Set("mySecureName");
param.Authentication = AuthenticationDigests.MD5;
param.AuthenticationSecret.Set("alstom1!");
param.Privacy = PrivacyProtocols.None;
param.Reportable = false;
SnmpV3Packet testResult;
try
{
testResult = (SnmpV3Packet)target.Request(this.CreatePDU(PduType.Get), param);
result = true;
}
catch (Exception ex)
{
Console.WriteLine(ex);
testResult = null;
result = false;
}
}
return(result);
//param.SecurityName.Set("mySecureName");
}
private System.Collections.Generic.Dictionary <string, string> SendPacket(SnmpOperationType pduType, System.Collections.Generic.List <VarBinding> variables)
{
if (variables == null || variables.Count < 1)
{
throw new System.ArgumentNullException("The variables for the " + pduType + " operation is null or empty.");
}
UdpTarget udpTarget = null;
IAgentParameters agentParameters = null;
Pdu pdu = null;
System.Collections.Generic.Dictionary <string, string> result3;
try
{
udpTarget = new UdpTarget(System.Net.IPAddress.Parse(this.config.AgentIp), this.config.Port, this.config.Timeout, this.config.Retry);
if (this.config.Version == SnmpVersionType.Ver3)
{
agentParameters = new SecureAgentParameters();
SecureAgentParameters secureAgentParameters = agentParameters as SecureAgentParameters;
if (!udpTarget.Discovery(secureAgentParameters))
{
throw new SnmpException("Discovery failed: The device with ip(" + this.config.AgentIp + ") is unreachable.");
}
pdu = new ScopedPdu();
SnmpV3Config snmpV3Config = this.config as SnmpV3Config;
secureAgentParameters.SecurityName.Set(snmpV3Config.UserName);
secureAgentParameters.Authentication = (AuthenticationDigests)snmpV3Config.Authentication;
secureAgentParameters.AuthenticationSecret.Set(snmpV3Config.AuthSecret);
secureAgentParameters.Privacy = (PrivacyProtocols)snmpV3Config.Privacy;
secureAgentParameters.PrivacySecret.Set(snmpV3Config.PrivacySecret);
secureAgentParameters.Reportable = true;
}
else
{
if (this.config.Version == SnmpVersionType.Ver1)
{
OctetString community = new OctetString(((SnmpV1Config)this.config).Community);
agentParameters = new AgentParameters(SnmpVersion.Ver1, community);
}
else
{
OctetString community = new OctetString(((SnmpV2Config)this.config).Community);
agentParameters = new AgentParameters(SnmpVersion.Ver2, community);
}
pdu = new Pdu();
}
DictionaryUtil dictionaryUtil = new DictionaryUtil();
foreach (VarBinding current in variables)
{
try
{
if (current is LeafVarBinding)
{
if (pduType.Equals(SnmpOperationType.GetTable) || pduType.Equals(SnmpOperationType.Walk))
{
pdu.Type = PduType.Get;
}
else
{
pdu.Type = (PduType)pduType;
if (pduType.Equals(SnmpOperationType.GetBulk))
{
this.configBulkPdu(pdu, current.MaxRepetition);
}
}
System.Collections.Generic.Dictionary <string, string> result = this.ReceiveResponseWithLeafVB((LeafVarBinding)current, pdu, udpTarget, agentParameters);
dictionaryUtil.Add(result);
}
else
{
if (agentParameters.Version == SnmpVersion.Ver1)
{
pdu.Type = PduType.GetNext;
}
else
{
pdu.Type = PduType.GetBulk;
this.configBulkPdu(pdu, current.MaxRepetition);
}
System.Collections.Generic.Dictionary <string, string> result2 = this.ReceiveResponseWithTableVB((TableVarBinding)current, pdu, udpTarget, agentParameters);
dictionaryUtil.Add(result2);
}
}
catch (System.Exception ex)
{
if (!ex.Message.Contains("Invalid ASN.1 type encountered 0x00. Unable to continue decoding."))
{
throw new SnmpException(ex.Message);
}
}
}
result3 = dictionaryUtil.Result;
}
catch (System.Exception ex2)
{
throw new SnmpException(ex2.Message);
}
finally
{
if (udpTarget != null)
{
udpTarget.Close();
}
}
return(result3);
}
