| public decode ( byte buffer, int length ) : int | ||
| buffer | byte | BER encoded packet buffer |
| length | int | BER encoded packet buffer length |
| return | int | |
/// <summary>Make SNMP Request</summary>
/// <remarks>
/// Make SNMP request. With this method you can make blocked SNMP version 1, 2 and 3 requests of type GET,
/// GET-NEXT, GET-BULK, SET and REPORT (request types have to compatible with the SNMP protocol version you
/// are using).
///
/// This method will pass through any exceptions thrown by parsing classes/methods so see individual packet
/// classes, ASN.1 type classes, authentication, privacy, etc. classes for exceptions thrown.
/// </remarks>
/// <param name="pdu">Pdu class (do not pass ScopedPdu)</param>
/// <param name="agentParameters">Security information for the request. Use <see cref="AgentParameters"/>
/// for SNMP versions 1 and 2 requests. Use <see cref="SecureAgentParameters"/> for SNMP version 3
/// requests.</param>
/// <returns>Appropriate SNMP packet class for the reply received (<see cref="SnmpV1Packet"/>,
/// <see cref="SnmpV2Packet"/>, or <see cref="SnmpV3Packet"/>. Null value if there was an error
/// with the request.</returns>
/// <exception cref="SnmpAuthenticationException">Thrown on SNMPv3 requests when authentication password
/// is not specified on authNoPriv or authPriv requests in SecureAgentParameters or if incoming packet
/// authentication check failed.
///
/// With SNMP ver1 and ver2c, authentication check fails when invalid community name is parsed in the reply.</exception>
/// <exception cref="SnmpPrivacyException">Thrown on SNMPv3 requests when privacy password is not
/// specified in SecureAgentParameters on authPriv requests.</exception>
/// <exception cref="SnmpException">Thrown in following cases:
///
/// * IAgentParameters.Valid() returned false. SnmpException.ErrorCode is set to SnmpException.InvalidIAgentParameters
/// * No data received on request. SnmpException.ErrorCode is set to SnmpException.NoDataReceived
/// * Invalid RequestId in reply. SnmpException.ErrorCode is set to SnmpException.InvalidRequestId
/// </exception>
public SnmpPacket Request(Pdu pdu, IAgentParameters agentParameters)
{
byte[] outPacket;
if (agentParameters.Version == SnmpVersion.Ver3)
{
SecureAgentParameters secparams = (SecureAgentParameters)agentParameters;
if (secparams.Authentication != AuthenticationDigests.None && secparams.AuthenticationSecret.Length <= 0)
{
throw new SnmpAuthenticationException("Authentication password not specified.");
}
if (secparams.Privacy != PrivacyProtocols.None && secparams.PrivacySecret.Length <= 0)
{
throw new SnmpPrivacyException("Privacy password not specified.");
}
_noSourceCheck = false; // this option is not valid for SNMP v3 requests
ScopedPdu outPdu = new ScopedPdu(pdu);
SnmpV3Packet packet = new SnmpV3Packet(outPdu);
secparams.InitializePacket(packet);
if (secparams.HasCachedKeys)
{
outPacket = packet.encode(secparams.AuthenticationKey, secparams.PrivacyKey);
}
else
{
outPacket = packet.encode();
}
}
else if (agentParameters.Version == SnmpVersion.Ver1)
{
AgentParameters param = (AgentParameters)agentParameters;
if (!param.Valid())
{
throw new SnmpException(SnmpException.InvalidIAgentParameters, "Invalid AgentParameters. Unable to process request.");
}
SnmpV1Packet packet = new SnmpV1Packet();
packet.Pdu.Set(pdu);
packet.Community.Set(param.Community);
outPacket = packet.encode();
_noSourceCheck = param.DisableReplySourceCheck;
}
else if (agentParameters.Version == SnmpVersion.Ver2)
{
AgentParameters param = (AgentParameters)agentParameters;
if (!param.Valid())
{
throw new SnmpException(SnmpException.InvalidIAgentParameters, "Invalid AgentParameters. Unable to process request.");
}
SnmpV2Packet packet = new SnmpV2Packet();
packet.Pdu.Set(pdu);
packet.Community.Set(param.Community);
_noSourceCheck = param.DisableReplySourceCheck;
outPacket = packet.encode();
}
else
{
throw new SnmpInvalidVersionException("Unsupported SNMP version.");
}
byte[] inBuffer = base.Request(_address, _port, outPacket, outPacket.Length, _timeout, _retry);
if (inBuffer == null || inBuffer.Length <= 0)
{
throw new SnmpException(SnmpException.NoDataReceived, "No data received on request.");
}
// verify packet
if (agentParameters.Version == SnmpVersion.Ver1)
{
SnmpV1Packet packet = new SnmpV1Packet();
AgentParameters param = (AgentParameters)agentParameters;
packet.decode(inBuffer, inBuffer.Length);
if (packet.Community != param.Community)
{
// invalid community name received. Ignore the rest of the packet
throw new SnmpAuthenticationException("Invalid community name in reply.");
}
if (packet.Pdu.RequestId != pdu.RequestId)
{
// invalid request id. unmatched response ignored
throw new SnmpException(SnmpException.InvalidRequestId, "Invalid request id in reply.");
}
return(packet);
}
else if (agentParameters.Version == SnmpVersion.Ver2)
{
SnmpV2Packet packet = new SnmpV2Packet();
AgentParameters param = (AgentParameters)agentParameters;
packet.decode(inBuffer, inBuffer.Length);
if (packet.Community != param.Community)
{
// invalid community name received. Ignore the rest of the packet
throw new SnmpAuthenticationException("Invalid community name in reply.");
}
if (packet.Pdu.RequestId != pdu.RequestId)
{
// invalid request id. unmatched response ignored
throw new SnmpException(SnmpException.InvalidRequestId, "Invalid request id in reply.");
}
return(packet);
}
else if (agentParameters.Version == SnmpVersion.Ver3)
{
SnmpV3Packet packet = new SnmpV3Packet();
SecureAgentParameters secparams = (SecureAgentParameters)agentParameters;
secparams.InitializePacket(packet);
if (secparams.HasCachedKeys)
{
packet.decode(inBuffer, inBuffer.Length, secparams.AuthenticationKey, secparams.PrivacyKey);
}
else
{
packet.decode(inBuffer, inBuffer.Length);
}
// first check if packet is a discovery response and process it
if (packet.Pdu.Type == PduType.Report && packet.Pdu.VbCount > 0 && packet.Pdu.VbList[0].Oid.Equals(SnmpConstants.usmStatsUnknownEngineIDs))
{
secparams.UpdateDiscoveryValues(packet);
return(packet);
}
else
{
if (!secparams.ValidateIncomingPacket(packet))
{
return(null);
}
else
{
secparams.UpdateDiscoveryValues(packet); // update time, etc. values
return(packet);
}
}
}
return(null);
}
internal void AsyncResponse(AsyncRequestResult result, IPEndPoint peer, byte[] buffer, int buflen)
{
if (result != AsyncRequestResult.NoError)
{
_response(result, null);
}
else
{
if (buffer == null || buffer.Length <= 0 || buflen <= 0)
{
_response(AsyncRequestResult.NoDataReceived, null);
return;
}
// verify packet
if (_agentParameters.Version == (int)SnmpVersion.Ver1)
{
SnmpV1Packet packet = new SnmpV1Packet();
try
{
packet.decode(buffer, buflen);
}
catch (Exception ex)
{
ex.GetType();
// Console.WriteLine("Exception while decoding SNMP packet: " + ex.ToString());
_response(AsyncRequestResult.DecodeError, packet);
return;
}
_response(AsyncRequestResult.NoError, packet);
return;
}
else if (_agentParameters.Version == SnmpVersion.Ver2)
{
SnmpV2Packet packet = new SnmpV2Packet();
try
{
packet.decode(buffer, buflen);
}
catch (Exception ex)
{
ex.GetType();
// Console.WriteLine("Exception while decoding SNMP packet: " + ex.ToString());
// MutableByte b = new MutableByte(buffer, buflen);
// Console.WriteLine("Buffer length {0}", buflen);
// SnmpConstants.DumpHex(b);
_response(AsyncRequestResult.DecodeError, packet);
return;
}
_response(AsyncRequestResult.NoError, packet);
}
else if (_agentParameters.Version == SnmpVersion.Ver3)
{
SnmpV3Packet packet = new SnmpV3Packet();
SecureAgentParameters secparams = (SecureAgentParameters)_agentParameters;
secparams.InitializePacket(packet);
try {
if (secparams.HasCachedKeys)
{
packet.decode(buffer, buflen, secparams.AuthenticationKey, secparams.PrivacyKey);
}
else
{
packet.decode(buffer, buflen);
}
}
catch
{
_response(AsyncRequestResult.DecodeError, packet);
return;
}
if (!secparams.ValidateIncomingPacket(packet))
{
_response(AsyncRequestResult.AuthenticationError, packet);
}
else
{
secparams.UpdateDiscoveryValues(packet); // update time, etc. values
_response(AsyncRequestResult.NoError, packet);
}
}
}
}
public void zlapPulapke()
{
/*!
*Kod pochodzi ze strony http://www.snmpsharpnet.com/?page_id=117
*/
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 162);
EndPoint ep = (EndPoint)ipep;
socket.Bind(ep);
// Disable timeout processing. Just block until packet is received
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 0);
bool run = true;
int inlen = -1;
while (run)
{
byte[] indata = new byte[16 * 1024];
// 16KB receive buffer int inlen = 0;
IPEndPoint peer = new IPEndPoint(IPAddress.Any, 0);
EndPoint inep = (EndPoint)peer;
try
{
inlen = socket.ReceiveFrom(indata, ref inep);
}
catch (Exception ex)
{
Console.WriteLine("Exception {0}", ex.Message);
inlen = -1;
}
if (inlen > 0)
{
Console.WriteLine("TAK");
listaWierszyZeZlapanejPualpki.Clear();
// Check protocol version int
int ver = SnmpPacket.GetProtocolVersion(indata, inlen);
if (ver == (int)SnmpVersion.Ver1)
{
// Parse SNMP Version 1 TRAP packet
SnmpV1TrapPacket pkt = new SnmpV1TrapPacket();
pkt.decode(indata, inlen);
listaWierszyZeZlapanejPualpki.Add("** SNMP Version 1 TRAP otrzymane od " + inep.ToString());
listaWierszyZeZlapanejPualpki.Add("*** Trap generic: " + pkt.Pdu.Generic);
listaWierszyZeZlapanejPualpki.Add("*** Trap specific: " + pkt.Pdu.Specific);
listaWierszyZeZlapanejPualpki.Add("*** Agent address: " + pkt.Pdu.AgentAddress.ToString());
listaWierszyZeZlapanejPualpki.Add("*** Timestamp: " + pkt.Pdu.TimeStamp.ToString());
listaWierszyZeZlapanejPualpki.Add("*** VarBind count: " + pkt.Pdu.VbList.Count);
listaWierszyZeZlapanejPualpki.Add("*** VarBind content:");
foreach (Vb v in pkt.Pdu.VbList)
{
StringBuilder budowaStringa = new StringBuilder();
budowaStringa.Append("**** ");
budowaStringa.Append(v.Oid.ToString());
budowaStringa.Append(" " + SnmpConstants.GetTypeName(v.Value.Type));
budowaStringa.Append(": " + v.Value.ToString());
listaWierszyZeZlapanejPualpki.Add(budowaStringa.ToString());
}
listaWierszyZeZlapanejPualpki.Add("** Koniec SNMP Version 1 TRAP data.");
flagaWierszyZeZlapanejPulapki = true;
//return true;
}
else {
// Parse SNMP Version 2 TRAP packet
SnmpV2Packet pkt = new SnmpV2Packet();
pkt.decode(indata, inlen);
listaWierszyZeZlapanejPualpki.Clear();
listaWierszyZeZlapanejPualpki.Add("** SNMP Version 2 TRAP otrzymane od " + inep.ToString());
if ((SnmpSharpNet.PduType)pkt.Pdu.Type != PduType.V2Trap)
{
listaWierszyZeZlapanejPualpki.Add("*** NOT an SNMPv2 trap ****");
}
else {
listaWierszyZeZlapanejPualpki.Add("*** Community: " + pkt.Community.ToString());
listaWierszyZeZlapanejPualpki.Add("*** VarBind count: " + pkt.Pdu.VbList.Count);
listaWierszyZeZlapanejPualpki.Add("*** VarBind content:");
foreach (Vb v in pkt.Pdu.VbList)
{
StringBuilder budowaStringa = new StringBuilder();
budowaStringa.Append("**** ");
budowaStringa.Append(v.Oid.ToString());
budowaStringa.Append(" " + SnmpConstants.GetTypeName(v.Value.Type));
budowaStringa.Append(": " + v.Value.ToString());
listaWierszyZeZlapanejPualpki.Add(budowaStringa.ToString());
}
listaWierszyZeZlapanejPualpki.Add("** Koniec SNMP Version 2 TRAP data.");
}
flagaWierszyZeZlapanejPulapki = true;
//return true;
}
}
else {
if (inlen == 0)
{
listaWierszyZeZlapanejPualpki.Clear();
listaWierszyZeZlapanejPualpki.Add("Przechwycono pusty pakiet");
flagaWierszyZeZlapanejPulapki = true;
//return true;
}
}
}
//return false;
}
private void recv(IAsyncResult res)
{
IPEndPoint RemoteIpEndPoint = new IPEndPoint(IPAddress.Any, 0);
byte[] received = Client.EndReceive(res, ref RemoteIpEndPoint);
//Process codes
// MessageBox.Show(Encoding.UTF8.GetString(received));
SnmpV2Packet pkt = new SnmpV2Packet();
pkt.decode(received, received.Length);
_debug("Получен TRAP с адреса " + RemoteIpEndPoint.ToString());
//NotifyIcon notifyObj = new NotifyIcon();
//notifyObj.ShowBalloon(Convert.ToUInt32(ToolTipIcon.Info) ,"Сообщение", "Я свернулась:)",5000 );
string trapData = "";
foreach (Vb v in pkt.Pdu.VbList)
{
trapData = String.Concat(trapData, "**** " +
v.Oid.ToString() + " " +
SnmpConstants.GetTypeName(v.Value.Type) + " " +
v.Value.ToString());
}
Trap trp = new Trap(RemoteIpEndPoint.ToString(), pkt);
if (checkForExcludes(trp))
{
//через анонимный делегат отправим данные трапа на грид, чтобы не подвисал интерфейс, т.к. шлем из другого потока
this.Invoke((MethodInvoker)delegate
{
//выведем нотификацию
taskbarNotifier.Show("", "Получен трап с адреса " + RemoteIpEndPoint.ToString() + Environment.NewLine +
"Community:" + trp.tCommunity, 300, 3000, 300);
tList.addTrap(trp);
addTrapToGrid(trp); // runs on UI thread
});
tList.saveToFile();
}
Client.BeginReceive(new AsyncCallback(recv), null);
}
internal void AsyncResponse(AsyncRequestResult result, IPEndPoint peer, byte[] buffer, int buflen)
{
if (result != AsyncRequestResult.NoError)
{
_response(result, null);
}
else
{
if (buffer == null || buffer.Length <= 0 || buflen <= 0)
{
_response(AsyncRequestResult.NoDataReceived, null);
return;
}
// verify packet
if (_agentParameters.Version == (int)SnmpVersion.Ver1)
{
SnmpV1Packet packet = new SnmpV1Packet();
try
{
packet.decode(buffer, buflen);
}
catch(Exception ex)
{
ex.GetType();
// Console.WriteLine("Exception while decoding SNMP packet: " + ex.ToString());
_response(AsyncRequestResult.DecodeError, packet);
return;
}
_response(AsyncRequestResult.NoError, packet);
return;
}
else if (_agentParameters.Version == SnmpVersion.Ver2)
{
SnmpV2Packet packet = new SnmpV2Packet();
try
{
packet.decode(buffer, buflen);
}
catch (Exception ex)
{
ex.GetType();
// Console.WriteLine("Exception while decoding SNMP packet: " + ex.ToString());
// MutableByte b = new MutableByte(buffer, buflen);
// Console.WriteLine("Buffer length {0}", buflen);
// SnmpConstants.DumpHex(b);
_response(AsyncRequestResult.DecodeError, packet);
return;
}
_response(AsyncRequestResult.NoError, packet);
}
else if (_agentParameters.Version == SnmpVersion.Ver3)
{
SnmpV3Packet packet = new SnmpV3Packet();
SecureAgentParameters secparams = (SecureAgentParameters)_agentParameters;
secparams.InitializePacket(packet);
try {
if (secparams.HasCachedKeys)
packet.decode(buffer, buflen, secparams.AuthenticationKey, secparams.PrivacyKey);
else
packet.decode(buffer, buflen);
}
catch
{
_response(AsyncRequestResult.DecodeError, packet);
return;
}
if (!secparams.ValidateIncomingPacket(packet))
{
_response(AsyncRequestResult.AuthenticationError, packet);
}
else
{
secparams.UpdateDiscoveryValues(packet); // update time, etc. values
_response(AsyncRequestResult.NoError, packet);
}
}
}
}
/// <summary>Make SNMP Request</summary>
/// <remarks>
/// Make SNMP request. With this method you can make blocked SNMP version 1, 2 and 3 requests of type GET,
/// GET-NEXT, GET-BULK, SET and REPORT (request types have to compatible with the SNMP protocol version you
/// are using).
///
/// This method will pass through any exceptions thrown by parsing classes/methods so see individual packet
/// classes, ASN.1 type classes, authentication, privacy, etc. classes for exceptions thrown.
/// </remarks>
/// <param name="pdu">Pdu class (do not pass ScopedPdu)</param>
/// <param name="agentParameters">Security information for the request. Use <see cref="AgentParameters"/>
/// for SNMP versions 1 and 2 requests. Use <see cref="SecureAgentParameters"/> for SNMP version 3
/// requests.</param>
/// <returns>Appropriate SNMP packet class for the reply received (<see cref="SnmpV1Packet"/>,
/// <see cref="SnmpV2Packet"/>, or <see cref="SnmpV3Packet"/>. Null value if there was an error
/// with the request.</returns>
/// <exception cref="SnmpAuthenticationException">Thrown on SNMPv3 requests when authentication password
/// is not specified on authNoPriv or authPriv requests in SecureAgentParameters or if incoming packet
/// authentication check failed.
///
/// With SNMP ver1 and ver2c, authentication check fails when invalid community name is parsed in the reply.</exception>
/// <exception cref="SnmpPrivacyException">Thrown on SNMPv3 requests when privacy password is not
/// specified in SecureAgentParameters on authPriv requests.</exception>
/// <exception cref="SnmpException">Thrown in following cases:
///
/// * IAgentParameters.Valid() returned false. SnmpException.ErrorCode is set to SnmpException.InvalidIAgentParameters
/// * No data received on request. SnmpException.ErrorCode is set to SnmpException.NoDataReceived
/// * Invalid RequestId in reply. SnmpException.ErrorCode is set to SnmpException.InvalidRequestId
/// </exception>
public SnmpPacket Request(Pdu pdu, IAgentParameters agentParameters)
{
byte[] outPacket;
if (agentParameters.Version == SnmpVersion.Ver3)
{
SecureAgentParameters secparams = (SecureAgentParameters)agentParameters;
if (secparams.Authentication != AuthenticationDigests.None && secparams.AuthenticationSecret.Length <= 0)
throw new SnmpAuthenticationException("Authentication password not specified.");
if (secparams.Privacy != PrivacyProtocols.None && secparams.PrivacySecret.Length <= 0)
throw new SnmpPrivacyException("Privacy password not specified.");
_noSourceCheck = false; // this option is not valid for SNMP v3 requests
ScopedPdu outPdu = new ScopedPdu(pdu);
SnmpV3Packet packet = new SnmpV3Packet(outPdu);
secparams.InitializePacket(packet);
if (secparams.HasCachedKeys)
outPacket = packet.encode(secparams.AuthenticationKey, secparams.PrivacyKey);
else
outPacket = packet.encode();
}
else if (agentParameters.Version == SnmpVersion.Ver1)
{
AgentParameters param = (AgentParameters)agentParameters;
if (!param.Valid())
throw new SnmpException(SnmpException.InvalidIAgentParameters,"Invalid AgentParameters. Unable to process request.");
SnmpV1Packet packet = new SnmpV1Packet();
packet.Pdu.Set(pdu);
packet.Community.Set(param.Community);
outPacket = packet.encode();
_noSourceCheck = param.DisableReplySourceCheck;
}
else if (agentParameters.Version == SnmpVersion.Ver2)
{
AgentParameters param = (AgentParameters)agentParameters;
if (!param.Valid())
throw new SnmpException(SnmpException.InvalidIAgentParameters, "Invalid AgentParameters. Unable to process request.");
SnmpV2Packet packet = new SnmpV2Packet();
packet.Pdu.Set(pdu);
packet.Community.Set(param.Community);
_noSourceCheck = param.DisableReplySourceCheck;
outPacket = packet.encode();
}
else
{
throw new SnmpInvalidVersionException("Unsupported SNMP version.");
}
byte[] inBuffer = base.Request(_address, _port, outPacket, outPacket.Length, _timeout, _retry);
if (inBuffer == null || inBuffer.Length <= 0)
{
return null;
}
// verify packet
if (agentParameters.Version == SnmpVersion.Ver1)
{
SnmpV1Packet packet = new SnmpV1Packet();
AgentParameters param = (AgentParameters)agentParameters;
packet.decode(inBuffer, inBuffer.Length);
if (packet.Community != param.Community)
{
// invalid community name received. Ignore the rest of the packet
throw new SnmpAuthenticationException("Invalid community name in reply.");
}
if (packet.Pdu.RequestId != pdu.RequestId)
{
// invalid request id. unmatched response ignored
throw new SnmpException(SnmpException.InvalidRequestId, "Invalid request id in reply.");
}
return packet;
}
else if (agentParameters.Version == SnmpVersion.Ver2)
{
SnmpV2Packet packet = new SnmpV2Packet();
AgentParameters param = (AgentParameters)agentParameters;
packet.decode(inBuffer, inBuffer.Length);
if (packet.Community != param.Community)
{
// invalid community name received. Ignore the rest of the packet
throw new SnmpAuthenticationException("Invalid community name in reply.");
}
if (packet.Pdu.RequestId != pdu.RequestId)
{
// invalid request id. unmatched response ignored
throw new SnmpException(SnmpException.InvalidRequestId, "Invalid request id in reply.");
}
return packet;
}
else if (agentParameters.Version == SnmpVersion.Ver3)
{
SnmpV3Packet packet = new SnmpV3Packet();
SecureAgentParameters secparams = (SecureAgentParameters)agentParameters;
secparams.InitializePacket(packet);
if (secparams.HasCachedKeys)
packet.decode(inBuffer, inBuffer.Length, secparams.AuthenticationKey, secparams.PrivacyKey);
else
packet.decode(inBuffer, inBuffer.Length);
// first check if packet is a discovery response and process it
if (packet.Pdu.Type == PduType.Report && packet.Pdu.VbCount > 0 && packet.Pdu.VbList[0].Oid.Equals(SnmpConstants.usmStatsUnknownEngineIDs))
{
secparams.UpdateDiscoveryValues(packet);
return packet;
}
else
{
if (!secparams.ValidateIncomingPacket(packet))
{
return null;
}
else
{
secparams.UpdateDiscoveryValues(packet); // update time, etc. values
return packet;
}
}
}
return null;
}
private void button1_Click(object sender, EventArgs e)
{
// Construct a socket and bind it to the trap manager port 162
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 162);
EndPoint ep = (EndPoint)ipep;
socket.Bind(ep);
// Disable timeout processing. Just block until packet is received
socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 0);
bool run = true;
int inlen = -1;
while (run)
{
Application.DoEvents();
Thread.Sleep(100);
byte[] indata = new byte[16 * 1024];
// 16KB receive buffer int inlen = 0;
IPEndPoint peer = new IPEndPoint(IPAddress.Any, 0);
EndPoint inep = (EndPoint)peer;
try
{
inlen = socket.ReceiveFrom(indata, ref inep);
}
catch (Exception ex)
{
Console.WriteLine("Exception {0}", ex.Message);
inlen = -1;
}
if (inlen > 0)
{
// Check protocol version int
int ver = SnmpPacket.GetProtocolVersion(indata, inlen);
if (ver == (int)SnmpVersion.Ver1)
{
// Parse SNMP Version 1 TRAP packet
SnmpV1TrapPacket pkt = new SnmpV1TrapPacket();
pkt.decode(indata, inlen);
Console.WriteLine("** SNMP Version 1 TRAP received from {0}:", inep.ToString());
Console.WriteLine("*** Trap generic: {0}", pkt.Pdu.Generic);
Console.WriteLine("*** Trap specific: {0}", pkt.Pdu.Specific);
Console.WriteLine("*** Agent address: {0}", pkt.Pdu.AgentAddress.ToString());
Console.WriteLine("*** Timestamp: {0}", pkt.Pdu.TimeStamp.ToString());
Console.WriteLine("*** VarBind count: {0}", pkt.Pdu.VbList.Count);
Console.WriteLine("*** VarBind content:");
foreach (Vb v in pkt.Pdu.VbList)
{
Console.WriteLine("**** {0} {1}: {2}", v.Oid.ToString(), SnmpConstants.GetTypeName(v.Value.Type), v.Value.ToString());
textBox1.Text += "\n" + v.Oid.ToString() + "|" + SnmpConstants.GetTypeName(v.Value.Type) + "|" + v.Value.ToString();
}
Console.WriteLine("** End of SNMP Version 1 TRAP data.");
}
else
{
// Parse SNMP Version 2 TRAP packet
SnmpV2Packet pkt = new SnmpV2Packet();
pkt.decode(indata, inlen);
Console.WriteLine("** SNMP Version 2 TRAP received from {0}:", inep.ToString());
if ((SnmpSharpNet.PduType)pkt.Pdu.Type != PduType.V2Trap)
{
Console.WriteLine("*** NOT an SNMPv2 trap ****");
}
else
{
Console.WriteLine("*** Community: {0}", pkt.Community.ToString());
Console.WriteLine("*** VarBind count: {0}", pkt.Pdu.VbList.Count);
Console.WriteLine("*** VarBind content:");
foreach (Vb v in pkt.Pdu.VbList)
{
Console.WriteLine("**** {0} {1}: {2}",
v.Oid.ToString(), SnmpConstants.GetTypeName(v.Value.Type), v.Value.ToString());
}
Console.WriteLine("** End of SNMP Version 2 TRAP data.");
}
}
}
else
{
if (inlen == 0)
Console.WriteLine("Zero length packet received.");
}
}
}