/// <summary>
/// Construct and send SNMP v3 noAuthNoPriv Trap
/// </summary>
/// <param name="receiver">Trap receiver IP address</param>
/// <param name="receiverPort">Trap receiver UDP port number</param>
/// <param name="engineId">Sender SNMP engineId</param>
/// <param name="senderEngineBoots">Sender SNMP engine boots</param>
/// <param name="senderEngineTime">Sender SNMP engine time</param>
/// <param name="senderUserName">Security (user) name</param>
/// <param name="senderUpTime">Sender upTime</param>
/// <param name="trapObjectID">Trap object ID</param>
/// <param name="varList">Variable binding list</param>
public void SendV3Trap(IpAddress receiver, int receiverPort, byte[] engineId, Int32 senderEngineBoots,
Int32 senderEngineTime, string senderUserName, UInt32 senderUpTime, Oid trapObjectID, VbCollection varList)
{
SnmpV3Packet packet = new SnmpV3Packet();
packet.Pdu.Type = PduType.V2Trap;
packet.NoAuthNoPriv(ASCIIEncoding.UTF8.GetBytes(senderUserName));
packet.SetEngineId(engineId);
packet.SetEngineTime(senderEngineBoots, senderEngineTime);
packet.ScopedPdu.TrapObjectID.Set(trapObjectID);
packet.ScopedPdu.TrapSysUpTime.Value = senderUpTime;
packet.ScopedPdu.VbList.Add(varList);
packet.MsgFlags.Reportable = false;
SendV3Trap(packet, receiver, receiverPort);
}
/// <summary>
/// InitializePacket SNMP packet with values from this class. Works only on SNMP version 3 packets.
/// </summary>
/// <param name="packet">Instance of <see cref="SnmpV3Packet"/></param>
/// <exception cref="SnmpInvalidVersionException">Thrown when parameter packet is not SnmpV3Packet</exception>
public void InitializePacket(SnmpPacket packet)
{
if (packet is SnmpV3Packet)
{
SnmpV3Packet pkt = (SnmpV3Packet)packet;
bool isAuth = (_authenticationProtocol == AuthenticationDigests.None) ? false : true;
bool isPriv = (_privacyProtocol == PrivacyProtocols.None) ? false : true;
if (isAuth && isPriv)
{
pkt.authPriv(_securityName, _authenticationSecret, _authenticationProtocol, _privacySecret, _privacyProtocol);
}
else if (isAuth && !isPriv)
{
pkt.authNoPriv(_securityName, _authenticationSecret, _authenticationProtocol);
}
else
{
pkt.NoAuthNoPriv(_securityName);
}
pkt.USM.EngineId.Set(_engineId);
pkt.USM.EngineBoots = _engineBoots.Value;
pkt.USM.EngineTime = GetCurrentEngineTime();
pkt.MaxMessageSize = _maxMessageSize.Value;
pkt.MsgFlags.Reportable = _reportable;
if (_contextEngineId.Length > 0)
{
pkt.ScopedPdu.ContextEngineId.Set(_contextEngineId);
}
else
{
pkt.ScopedPdu.ContextEngineId.Set(_engineId);
}
if (_contextName.Length > 0)
{
pkt.ScopedPdu.ContextName.Set(_contextName);
}
else
{
pkt.ScopedPdu.ContextName.Reset();
}
}
else
{
throw new SnmpInvalidVersionException("Invalid SNMP version.");
}
}
/// <summary>
/// Prepare packet for transmission by filling target specific information in the packet.
/// </summary>
/// <param name="packet">SNMP packet class for the required version</param>
/// <returns>True if packet values are correctly set, otherwise false.</returns>
public bool PreparePacketForTransmission(SnmpPacket packet)
{
if (packet is SnmpV3Packet)
{
SnmpV3Packet pkt = (SnmpV3Packet)packet;
bool isAuth = (_authenticationProtocol == AuthenticationDigests.None) ? false : true;
bool isPriv = (_privacyProtocol == PrivacyProtocols.None) ? false : true;
if (isAuth && isPriv)
{
pkt.authPriv(_securityName, _authenticationSecret, _authenticationProtocol, _privacySecret, _privacyProtocol);
}
else if (isAuth && !isPriv)
{
pkt.authNoPriv(_securityName, _authenticationSecret, _authenticationProtocol);
}
else
{
pkt.NoAuthNoPriv(_securityName);
}
pkt.USM.EngineId.Set(_engineId);
pkt.USM.EngineBoots = _engineBoots.Value;
pkt.USM.EngineTime = GetCurrentEngineTime();
pkt.MaxMessageSize = _maxMessageSize.Value;
pkt.MsgFlags.Reportable = _reportable;
if (_contextEngineId.Length > 0)
{
pkt.ScopedPdu.ContextEngineId.Set(_contextEngineId);
}
else
{
pkt.ScopedPdu.ContextEngineId.Set(_engineId);
}
if (_contextName.Length > 0)
{
pkt.ScopedPdu.ContextName.Set(_contextName);
}
else
{
pkt.ScopedPdu.ContextName.Reset();
}
}
return(false);
}
/// <summary>
/// Construct and send SNMP v3 noAuthNoPriv Trap
/// </summary>
/// <param name="receiver">Trap receiver IP address</param>
/// <param name="receiverPort">Trap receiver UDP port number</param>
/// <param name="engineId">Sender SNMP engineId</param>
/// <param name="senderEngineBoots">Sender SNMP engine boots</param>
/// <param name="senderEngineTime">Sender SNMP engine time</param>
/// <param name="senderUserName">Security (user) name</param>
/// <param name="senderUpTime">Sender upTime</param>
/// <param name="trapObjectID">Trap object ID</param>
/// <param name="varList">Variable binding list</param>
public void SendV3Trap(IpAddress receiver, int receiverPort, byte[] engineId, Int32 senderEngineBoots,
Int32 senderEngineTime, string senderUserName, UInt32 senderUpTime, Oid trapObjectID, VbCollection varList)
{
SnmpV3Packet packet = new SnmpV3Packet();
packet.Pdu.Type = PduType.V2Trap;
packet.NoAuthNoPriv(ASCIIEncoding.UTF8.GetBytes(senderUserName));
packet.SetEngineId(engineId);
packet.SetEngineTime(senderEngineBoots, senderEngineTime);
packet.ScopedPdu.TrapObjectID.Set(trapObjectID);
packet.ScopedPdu.TrapSysUpTime.Value = senderUpTime;
packet.ScopedPdu.VbList.Add(varList);
packet.MsgFlags.Reportable = false;
SendV3Trap(packet, receiver, receiverPort);
}
