internal override void GetNext(Variable variable)
{
GetNextRequestMessage message = new GetNextRequestMessage(
Messenger.NextRequestId,
VersionCode,
GetCommunity,
new List<Variable> { variable });
ISnmpMessage response = message.GetResponse(Timeout, Agent);
if (response.Pdu.ErrorStatus.ToInt32() != 0)
{
throw ErrorException.Create(
"error in response",
Agent.Address,
response);
}
Logger.Info(response.Pdu.Variables[0].ToString(Objects));
}
private static bool HasNext(VersionCode version, IPEndPoint endpoint, OctetString community, Variable seed, int timeout, out Variable next)
{
if (seed == null)
{
throw new ArgumentNullException("seed");
}
var variables = new List <Variable> {
new Variable(seed.Id)
};
var message = new GetNextRequestMessage(RequestCounter.NextId, version, community, variables);
var response = message.GetResponse(timeout, endpoint);
var pdu = response.Pdu();
var errorFound = pdu.ErrorStatus.ToErrorCode() == ErrorCode.NoSuchName;
next = errorFound ? null : pdu.Variables[0];
return(!errorFound);
}
private static async Task <Tuple <bool, Variable> > HasNextAsync(VersionCode version, IPEndPoint endpoint, OctetString community, Variable seed)
{
if (seed == null)
{
throw new ArgumentNullException("seed");
}
var variables = new List <Variable> {
new Variable(seed.Id)
};
var message = new GetNextRequestMessage(RequestCounter.NextId, version, community, variables);
var response = await message.GetResponseAsync(endpoint).ConfigureAwait(false);
var pdu = response.Pdu();
var errorFound = pdu.ErrorStatus.ToErrorCode() == ErrorCode.NoSuchName;
return(new Tuple <bool, Variable> (!errorFound, errorFound ? null : pdu.Variables[0]));
}
/// <summary>
/// Get the Management Information Base of one SNMP agent.
/// </summary>
/// <param name="agentEP">IPEndPoint of the device with the agent.</param>
/// <returns>MIB as a Dictionary</returns>
internal static Dictionary<String, String> GetMIB(IPEndPoint agentEP)
{
Dictionary<String, String> mib = new Dictionary<String, String>();
// start
String id = ".0.0";
do {
GetNextRequestMessage message = new GetNextRequestMessage(0,
VersionCode.V1,
new OctetString("public"), // returns messageexception if false community string
new List<Variable> { new Variable(new ObjectIdentifier(id)) });
ResponseMessage response = (ResponseMessage)message.GetResponse(100, agentEP, new UserRegistry(), agentEP.GetSocket());
// get id
id = response.Scope.Pdu.Variables[0].Id.ToString();
if (mib.ContainsKey(id)) break;
mib.Add(id, response.Scope.Pdu.Variables[0].Data.ToString());
} while (true);
return mib;
}
private static bool HasNext(VersionCode version, IPEndPoint endpoint, OctetString community, Variable seed, int timeout, out Variable next)
{
if (seed == null)
{
throw new ArgumentNullException("seed");
}
var variables = new List<Variable> { new Variable(seed.Id) };
var message = new GetNextRequestMessage(
RequestCounter.NextId,
version,
community,
variables);
var response = message.GetResponse(timeout, endpoint);
var pdu = response.Pdu();
var errorFound = pdu.ErrorStatus.ToErrorCode() == ErrorCode.NoSuchName;
next = errorFound ? null : pdu.Variables[0];
return !errorFound;
}
public void SnmpGetNext(string community, string ipAddress, string oidKey)
{
GetNextRequestMessage message = new GetNextRequestMessage(0,
VersionCode.V2,
new OctetString(community),
new List<Variable> { new Variable(new ObjectIdentifier(oidKey)) });
ISnmpMessage response = message.GetResponse(6000, new IPEndPoint(IPAddress.Parse(ipAddress), 161));
if (response.Pdu().ErrorStatus.ToInt32() != 0)
{
throw ErrorException.Create(
"Error in response!",
IPAddress.Parse(ipAddress),
response);
}
var result = response.Pdu().Variables;
variableList = result.ToList();
}
//-----------------------------------------------------------------------------
//SNMPGETNEXT
public void SnmpGetNext(string oidKey)
{
GetNextRequestMessage message = new GetNextRequestMessage(0,
VersionCode.V2,
community,
new List<Variable> { new Variable(new ObjectIdentifier(oidKey)) });
ISnmpMessage response = message.GetResponse(6000, server);
if (response.Pdu().ErrorStatus.ToInt32() != 0)
{
throw ErrorException.Create(
"Error in response!",
server.Address,
response);
}
var result = response.Pdu().Variables;
variableList = result.ToList();
}
public static void Main(string[] args)
{
string community = "public";
bool showHelp = false;
bool showVersion = false;
VersionCode version = VersionCode.V1;
int timeout = 1000;
int retry = 0;
Levels level = Levels.Reportable;
string user = string.Empty;
string authentication = string.Empty;
string authPhrase = string.Empty;
string privacy = string.Empty;
string privPhrase = string.Empty;
bool dump = false;
OptionSet p = new OptionSet()
.Add("c:", "Community name, (default is public)", delegate (string v) { if (v != null) community = v; })
.Add("l:", "Security level, (default is noAuthNoPriv)", delegate(string v)
{
if (v.ToUpperInvariant() == "NOAUTHNOPRIV")
{
level = Levels.Reportable;
}
else if (v.ToUpperInvariant() == "AUTHNOPRIV")
{
level = Levels.Authentication | Levels.Reportable;
}
else if (v.ToUpperInvariant() == "AUTHPRIV")
{
level = Levels.Authentication | Levels.Privacy | Levels.Reportable;
}
else
{
throw new ArgumentException("no such security mode: " + v);
}
})
.Add("a:", "Authentication method (MD5 or SHA)", delegate(string v) { authentication = v; })
.Add("A:", "Authentication passphrase", delegate(string v) { authPhrase = v; })
.Add("x:", "Privacy method", delegate(string v) { privacy = v; })
.Add("X:", "Privacy passphrase", delegate(string v) { privPhrase = v; })
.Add("u:", "Security name", delegate(string v) { user = v; })
.Add("h|?|help", "Print this help information.", delegate(string v) { showHelp = v != null; })
.Add("V", "Display version number of this application.", delegate (string v) { showVersion = v != null; })
.Add("d", "Display message dump", delegate(string v) { dump = true; })
.Add("t:", "Timeout value (unit is second).", delegate (string v) { timeout = int.Parse(v) * 1000; })
.Add("r:", "Retry count (default is 0)", delegate (string v) { retry = int.Parse(v); })
.Add("v:", "SNMP version (1, 2, and 3 are currently supported)", delegate (string v)
{
switch (int.Parse(v))
{
case 1:
version = VersionCode.V1;
break;
case 2:
version = VersionCode.V2;
break;
case 3:
version = VersionCode.V3;
break;
default:
throw new ArgumentException("no such version: " + v);
}
});
if (args.Length == 0)
{
ShowHelp(p);
return;
}
List<string> extra;
try
{
extra = p.Parse(args);
}
catch (OptionException ex)
{
Console.WriteLine(ex.Message);
return;
}
if (showHelp)
{
ShowHelp(p);
return;
}
if (extra.Count < 2)
{
Console.WriteLine("invalid variable number: " + extra.Count);
return;
}
if (showVersion)
{
Console.WriteLine(System.Reflection.Assembly.GetExecutingAssembly().GetName().Version);
return;
}
IPAddress ip;
bool parsed = IPAddress.TryParse(extra[0], out ip);
if (!parsed)
{
foreach (IPAddress address in
Dns.GetHostAddresses(extra[0]).Where(address => address.AddressFamily == AddressFamily.InterNetwork))
{
ip = address;
break;
}
if (ip == null)
{
Console.WriteLine("invalid host or wrong IP address found: " + extra[0]);
return;
}
}
try
{
List<Variable> vList = new List<Variable>();
for (int i = 1; i < extra.Count; i++)
{
Variable test = new Variable(new ObjectIdentifier(extra[i]));
vList.Add(test);
}
IPEndPoint receiver = new IPEndPoint(ip, 161);
if (version != VersionCode.V3)
{
GetNextRequestMessage message = new GetNextRequestMessage(0,
version,
new OctetString(community),
vList);
ISnmpMessage response = message.GetResponse(timeout, receiver);
if (response.Pdu().ErrorStatus.ToInt32() != 0) // != ErrorCode.NoError
{
throw ErrorException.Create(
"error in response",
receiver.Address,
response);
}
foreach (Variable variable in response.Pdu().Variables)
{
Console.WriteLine(variable);
}
return;
}
if (string.IsNullOrEmpty(user))
{
Console.WriteLine("User name need to be specified for v3.");
return;
}
IAuthenticationProvider auth = (level & Levels.Authentication) == Levels.Authentication
? GetAuthenticationProviderByName(authentication, authPhrase)
: DefaultAuthenticationProvider.Instance;
IPrivacyProvider priv;
if ((level & Levels.Privacy) == Levels.Privacy)
{
priv = new DESPrivacyProvider(new OctetString(privPhrase), auth);
}
else
{
priv = new DefaultPrivacyProvider(auth);
}
Discovery discovery = Messenger.GetNextDiscovery(SnmpType.GetNextRequestPdu);
ReportMessage report = discovery.GetResponse(timeout, receiver);
GetNextRequestMessage request = new GetNextRequestMessage(VersionCode.V3, Messenger.NextMessageId, Messenger.NextRequestId, new OctetString(user), vList, priv, Messenger.MaxMessageSize, report);
ISnmpMessage reply = request.GetResponse(timeout, receiver);
if (dump)
{
Console.WriteLine("Request message bytes:");
Console.WriteLine(ByteTool.Convert(request.ToBytes()));
Console.WriteLine("Response message bytes:");
Console.WriteLine(ByteTool.Convert(reply.ToBytes()));
}
if (reply is ReportMessage)
{
if (reply.Pdu().Variables.Count == 0)
{
Console.WriteLine("wrong report message received");
return;
}
var id = reply.Pdu().Variables[0].Id;
if (id != Messenger.NotInTimeWindow)
{
var error = id.GetErrorMessage();
Console.WriteLine(error);
return;
}
// according to RFC 3414, send a second request to sync time.
request = new GetNextRequestMessage(VersionCode.V3, Messenger.NextMessageId, Messenger.NextRequestId, new OctetString(user), vList, priv, Messenger.MaxMessageSize, reply);
reply = request.GetResponse(timeout, receiver);
}
else if (reply.Pdu().ErrorStatus.ToInt32() != 0) // != ErrorCode.NoError
{
throw ErrorException.Create(
"error in response",
receiver.Address,
reply);
}
foreach (Variable v in reply.Pdu().Variables)
{
Console.WriteLine(v);
}
}
catch (SnmpException ex)
{
Console.WriteLine(ex);
}
catch (SocketException ex)
{
Console.WriteLine(ex);
}
}
private IEnumerable<SnmpResult> GetNextOperation(SnmpVersion version, IPAddress ipAddress, string octetString, Oid oid)
{
_log.Info("SnmpEngine.GetNextOperation() : Started oid: " + oid.Value);
List<SnmpResult> results;
var variable = new List<Variable>
{
new Variable(new ObjectIdentifier(oid.Value))
};
try
{
var getNextRequest = new GetNextRequestMessage(0, _converter.ToVersionCodeConverter(version), new OctetString(octetString), variable);
var responce = getNextRequest.GetResponse(SnmpHelper.DefaultTimeOut, new IPEndPoint(ipAddress, SnmpHelper.SnmpServerPort));
if (responce.Pdu().ErrorStatus.ToInt32() != 0)
{
throw new SnmpEngineException("SnmpEngine.GetNextOperation() error status = 0; oid = " + oid.Value);
}
results = responce.Pdu().Variables.Select(var => new SnmpResult(new Oid(var.Id.ToString()), var.Data, _converter.ToSnmpDataType(var.Data.TypeCode))).ToList();
}
catch (Exception e)
{
if (e is TimeoutException)
{
_log.Error("SnmpEngine.GetOperation():Timeout Exception caught:", e);
throw new SnmpTimeOutException(e.Message, _timeOut);
}
else if (e is ArgumentOutOfRangeException)
{
_log.Error("SnmpEngine.GetOperation():Argument Out Of Range Exception caught:", e);
throw new SnmpEngineConvertorException((ArgumentOutOfRangeException)e);
}
else
{
_log.Error("SnmpEngine.GetOperation():Exception caught:", e);
throw new SnmpEngineException(e.Message);
}
}
finally
{
_log.Info("SnmpEngine.GetNextOperation(): Finished");
}
return results;
}
internal override void GetNext(Variable variable)
{
if (string.IsNullOrEmpty(UserName))
{
Logger.Info("User name need to be specified for v3.");
return;
}
Discovery discovery = Messenger.NextDiscovery;
ReportMessage report = discovery.GetResponse(Timeout, Agent);
GetNextRequestMessage request = new GetNextRequestMessage(VersionCode.V3, 100, 0, new OctetString(UserName), new List<Variable> { variable }, _privacy, Messenger.MaxMessageSize, report);
ISnmpMessage response = request.GetResponse(Timeout, Agent);
if (response.Pdu.ErrorStatus.ToInt32() != 0)
{
throw ErrorException.Create(
"error in response",
Agent.Address,
response);
}
Logger.Info(response.Pdu.Variables[0].ToString(Objects));
}
private void SNMP_GET_NEXT()
{
string adres = addressBox.Text;
GetNextRequestMessage message = new GetNextRequestMessage(0,
VersionCode.V1,
new OctetString("public"),
new List<Variable> { new Variable(new ObjectIdentifier(adres)) });
ISnmpMessage response = message.GetResponse(60000, new IPEndPoint(IPAddress.Parse("127.0.0.1"), 161));
if (response.Pdu().ErrorStatus.ToInt32() != 0)
{
throw new Exception();
}
var result = response.Pdu().Variables;
foreach (var v in result)
{
consoleBox.Items.Add(v.ToString());
}
}
