private static int DoSnmp(Snmp snmp, SnmpTarget target, Pdu pdu,
OperType operType, ref TableReader.GetTableOptions tableOptions,
uint repeat, bool asyncSync, bool debug)
{
int ncalls = 0;
for (uint i = 0; i < repeat; i++)
{
using (IMemoryManager mgr = MemoryManager.GetMemoryManager())
{
bool show = (i % 1000) == 0;
if (show || debug)
{
PrintPdu(Console.Out, "Sending PDU to target " + target, pdu, debug);
}
Pdu resPdu = DoSnmp(snmp, target, pdu,
operType, ref tableOptions,
asyncSync, show, debug, ref ncalls);
if ((show || debug) && resPdu != null)
{
PrintPdu(Console.Out, "Received PDU:", resPdu, debug);
}
if (debug)
{
Console.WriteLine("Removing " + mgr.Count + " objects");
}
}
}
return(ncalls);
}
private static GetTableState PrepareGetTable(
Snmp snmp, Pdu pdu, SnmpTarget target,
Oid[] columnOids, Oid startRowIndex, Oid endRowIndex,
int maxRows, int rowsPerQuery, AsyncCallback callback, object callbackData, bool sync)
{
if (!(pdu.Type == PduType.GetNext || pdu.Type == PduType.GetBulk))
{
throw new ArgumentException("Invalid pdu type: " + pdu.Type, "pdu");
}
if (columnOids.Length == 0)
{
throw new ArgumentException("Empty column oid table", "columnOids");
}
if (maxRows <= 0)
{
maxRows = int.MaxValue;
}
columnOids = (Oid[])columnOids.Clone();
Vb[] vbs = CreateNullVbs(columnOids, startRowIndex);
pdu = pdu.Clone(vbs);
pdu.NonRepeaters = 0;
return(new GetTableState(snmp, pdu, target, columnOids,
endRowIndex, maxRows, rowsPerQuery, vbs,
callback, callbackData, sync));
}
/// <summary>
/// Starts an asynchronous SNMP table retrieval operation.
/// </summary>
/// <param name="snmp">The SNMP session object to use.</param>
/// <param name="pdu">The PDU object used to convey the request type
/// and some security parameters (variable bindings are ignored; may
/// be an empty array).</param>
/// <param name="target">The SNMP target.</param>
/// <param name="columnOids">The OIDs of table columns to retrieve. The
/// columns should share table indexes (e.g., be a part of the same or
/// AUGMENTed table).</param>
/// <param name="callback">Callback method to invoke when a table is read
/// or <b>null</b>.</param>
/// <param name="callbackData">User state.</param>
/// <returns><see cref="IAsyncResult"/> object.</returns>
/// <remarks>
/// This method starts asynchronous table retrieval for the specified set
/// of columns. A typical example includes the retrieval of a whole table.
/// In order to complete the operation and free related resources,
/// <see cref="EndGetTable"/> must be later called, usually, in the callback
/// method specified by <b>callback</b> parameter.
/// </remarks>
public static IAsyncResult BeginGetTable(Snmp snmp, Pdu pdu, SnmpTarget target,
Oid[] columnOids,
AsyncCallback callback, object callbackData)
{
return(BeginGetTable(snmp, pdu, target, columnOids,
null, 0, callback, callbackData));
}
private async Task <MonitoredPort> EnsureMonitoredPort(SnmpTarget target, int portNumber)
{
var existingPort = await MonitoredPorts.Query()
.FirstOrDefaultAsync(port => port.PortNumber == portNumber && port.SnmpIpAddress == target.IpAddress);
if (existingPort == null)
{
var newPort = new MonitoredPort
{
AllInOctets = 0,
AllOutOctets = 0,
SnmpIpAddress = target.IpAddress,
PortNumber = portNumber,
FirstTimeScanned = DateTime.Now,
LastInOctets = 0,
LastOutOctets = 0,
ExcludeFromStatistics = false,
Comment = null
};
newPort = MonitoredPorts.Insert(newPort);
await Context.SaveAsync();
return(newPort);
}
return(existingPort);
}
/// <summary>
/// Retrieves an SNMP table from an agent.
/// </summary>
/// <param name="snmp">The SNMP session object to use.</param>
/// <param name="pdu">The PDU object used to convey the request type
/// and some security parameters (variable bindings are ignored; may
/// be an empty array).</param>
/// <param name="target">The SNMP target.</param>
/// <param name="columnOids">The OIDs of table columns to retrieve. The
/// columns should share table indexes (e.g., be a part of the same or
/// AUGMENTed table).</param>
/// <param name="options">The options for the operation.</param>
/// <param name="nRequests">Will be incremented every time a response
/// is received.</param>
/// <returns>The retrieved rows. Due to performance reasons, the rows
/// are returned as a jagged array but the array is guaranteed to be
/// rectangular. It contains either valid variable bindings or <b>null</b>
/// values for table "holes".</returns>
/// <remarks>This method returns table rows for the specified set of
/// columns. A typical example includes the retrieval of a complete
/// table but a number of parameters makes this method more flexible.
/// For more information on internal behavior, see the
/// <see cref="TableReader.UseAsyncInvoke"/> property.</remarks>
public static Vb[][] GetTable(Snmp snmp, Pdu pdu, SnmpTarget target,
Oid[] columnOids, GetTableOptions options, ref int nRequests)
{
return(GetTable(snmp, pdu, target, columnOids,
options.startRowIndex, options.endRowIndex,
options.maxRows, options.rowsPerQuery, ref nRequests));
}
/// <summary>
/// Starts an asynchronous SNMP table retrieval operation.
/// </summary>
/// <param name="snmp">The SNMP session object to use.</param>
/// <param name="pdu">The PDU object used to convey the request type
/// and some security parameters (variable bindings are ignored; may
/// be an empty array).</param>
/// <param name="target">The SNMP target.</param>
/// <param name="columnOids">The OIDs of table columns to retrieve. The
/// columns should share table indexes (e.g., be a part of the same or
/// AUGMENTed table).</param>
/// <param name="options">The options for the operation.</param>
/// <param name="callback">Callback method to invoke when a table is read
/// or <b>null</b>.</param>
/// <param name="callbackData">User state.</param>
/// <returns><see cref="IAsyncResult"/> object.</returns>
/// <remarks>
/// This method starts asynchronous table retrieval for the specified set
/// of columns. A typical example includes the retrieval of a whole table
/// but a number of parameters makes this method more flexible. In order
/// to complete the operation and free related resources, <see cref="EndGetTable"/>
/// must be later called, usually, in the callback method specified
/// by <b>callback</b> parameter.
/// </remarks>
public static IAsyncResult BeginGetTable(Snmp snmp, Pdu pdu, SnmpTarget target,
Oid[] columnOids, GetTableOptions options,
AsyncCallback callback, object callbackData)
{
return(BeginGetTable(snmp, pdu, target, columnOids,
options.startRowIndex, options.endRowIndex,
options.maxRows, options.rowsPerQuery, callback, callbackData));
}
/// <summary>
/// Retrieves an SNMP table from an agent.
/// </summary>
/// <param name="snmp">The SNMP session object to use.</param>
/// <param name="pdu">The PDU object used to convey the request type
/// and some security parameters (variable bindings are ignored; may
/// be an empty array).</param>
/// <param name="target">The SNMP target.</param>
/// <param name="columnOids">The OIDs of table columns to retrieve. The
/// columns should share table indexes (e.g., be a part of the same or
/// AUGMENTed table).</param>
/// <param name="startRowIndex">The row index to start from or <b>null</b>.</param>
/// <param name="maxRows">Maximum number of rows to retrieve. Specify 0
/// to read the whole table.</param>
/// <returns>The retrieved rows. Due to performance reasons, the rows
/// are returned as a jagged array but the array is guaranteed to be
/// rectangular. It contains either valid variable bindings or <b>null</b>
/// values for table "holes".</returns>
/// <remarks>This method returns table rows for the specified set of
/// columns. A typical example includes the retrieval of a complete
/// table but a number of parameters makes this method more flexible.
/// For more information on internal behavior, see the
/// <see cref="TableReader.UseAsyncInvoke"/> property.</remarks>
public static Vb[][] GetTable(Snmp snmp, Pdu pdu, SnmpTarget target,
Oid[] columnOids, Oid startRowIndex, int maxRows)
{
int nRequests = 0;
return(GetTable(snmp, pdu, target, columnOids,
startRowIndex, null, maxRows, 0, ref nRequests));
}
private static Pdu Invoke(Snmp snmp, Pdu pdu, SnmpTarget target, bool asyncSync)
{
if (asyncSync)
{
IAsyncResult ar = snmp.BeginInvoke(pdu, target, null, null);
return(snmp.EndInvoke(ar));
}
else
{
return(snmp.Invoke(pdu, target));
}
}
private static void Table(Snmp snmp, Pdu pdu, SnmpTarget target,
ref TableReader.GetTableOptions tableOptions, bool show, bool debug,
ref int ncalls)
{
Oid[] columnOids = GetColumnOids(pdu);
pdu = pdu.Clone(new Vb[0]); // not really needed; for test purposes
Vb[][] vbTable = TableReader.GetTable(snmp, pdu, target,
columnOids, tableOptions, ref ncalls);
if (show || debug)
{
TableReader.PrintTable(Console.Out, columnOids, vbTable);
}
}
/// <summary>
/// Starts an asynchronous SNMP table retrieval operation.
/// </summary>
/// <param name="snmp">The SNMP session object to use.</param>
/// <param name="pdu">The PDU object used to convey the request type
/// and some security parameters (variable bindings are ignored; may
/// be an empty array).</param>
/// <param name="target">The SNMP target.</param>
/// <param name="columnOids">The OIDs of table columns to retrieve. The
/// columns should share table indexes (e.g., be a part of the same or
/// AUGMENTed table).</param>
/// <param name="startRowIndex">The row index to start from or <b>null</b>.</param>
/// <param name="endRowIndex">The row index to finish at or <b>null</b>.</param>
/// <param name="maxRows">Maximum number of rows to retrieve. Specify 0
/// to read the whole table.</param>
/// <param name="rowsPerQuery">Number of rows to read in a single query.
/// Only valid if the request used will be GetBulk. Specify 0 to enable
/// a simple heuristic algorithm that dynamically computes this value
/// so that the response fits a single Ethernet packet.</param>
/// <param name="callback">Callback method to invoke when a table is read
/// or <b>null</b>.</param>
/// <param name="callbackData">User state.</param>
/// <returns><see cref="IAsyncResult"/> object.</returns>
/// <remarks>
/// This method starts asynchronous table retrieval for the specified set
/// of columns. A typical example includes the retrieval of a whole table
/// but a number of parameters makes this method more flexible. In order
/// to complete the operation and free related resources, <see cref="EndGetTable"/>
/// must be later called, usually, in the callback method specified
/// by <b>callback</b> parameter.
/// </remarks>
public static IAsyncResult BeginGetTable(Snmp snmp, Pdu pdu, SnmpTarget target,
Oid[] columnOids, Oid startRowIndex, Oid endRowIndex,
int maxRows, int rowsPerQuery,
AsyncCallback callback, object callbackData)
{
GetTableState state = PrepareGetTable(snmp, pdu, target, columnOids,
startRowIndex, endRowIndex, maxRows, rowsPerQuery,
callback, callbackData, false);
state.pdu.MaxRepetitions = GetMaxRepetitions(state);
snmp.BeginInvoke(state.pdu, state.target,
new AsyncCallback(GetTableCallback), state);
return(state);
}
/// <summary>
/// Retrieves an SNMP table from an agent.
/// </summary>
/// <param name="snmp">The SNMP session object to use.</param>
/// <param name="pdu">The PDU object used to convey the request type
/// and some security parameters (variable bindings are ignored; may
/// be an empty array).</param>
/// <param name="target">The SNMP target.</param>
/// <param name="columnOids">The OIDs of table columns to retrieve. The
/// columns should share table indexes (e.g., be a part of the same or
/// AUGMENTed table).</param>
/// <param name="startRowIndex">The row index to start from or <b>null</b>.</param>
/// <param name="endRowIndex">The row index to finish at or <b>null</b>.</param>
/// <param name="maxRows">Maximum number of rows to retrieve. Specify 0
/// to read the whole table.</param>
/// <param name="rowsPerQuery">Number of rows to read in a single query.
/// Only valid if the request used will be GetBulk. Specify 0 to enable
/// a simple heuristic algorithm that dynamically computes this value
/// so that the response fits a single Ethernet packet.</param>
/// <param name="nRequests">Will be incremented every time a response
/// is received.</param>
/// <returns>The retrieved rows. Due to performance reasons, the rows
/// are returned as a jagged array but the array is guaranteed to be
/// rectangular. It contains either valid variable bindings or <b>null</b>
/// values for table "holes".</returns>
/// <remarks>This method returns table rows for the specified set of
/// columns. A typical example includes the retrieval of a complete
/// table but a number of parameters makes this method more flexible.
/// For more information on internal behavior, see the
/// <see cref="TableReader.UseAsyncInvoke"/> property.</remarks>
public static Vb[][] GetTable(Snmp snmp, Pdu pdu, SnmpTarget target,
Oid[] columnOids, Oid startRowIndex, Oid endRowIndex,
int maxRows, int rowsPerQuery, ref int nRequests)
{
GetTableState state = PrepareGetTable(snmp, pdu, target, columnOids,
startRowIndex, endRowIndex, maxRows, rowsPerQuery,
null, null, true);
do
{
state.pdu.MaxRepetitions = GetMaxRepetitions(state);
}while (!ProcessGetTable(state, null, ref nRequests));
return(ExtractRows(state.rows));
}
public Rtu(int id, string name, IPEndpoint clientAddress, IPEndpoint hostAddres, ushort localDNP3Addres, ushort remoteDNP3Address,
Dictionary<int, int> bins, Dictionary<int, int> analogs, Dictionary<int, int> counters, DatabaseTemplate dt, GeminiMap gmap)
{
Id = id;
Name = name;
//Considerando uma RTU por Canal
if (Core.LoggingEnabled)
{
Channel = Core.DNP3Manager.AddTCPServer(name, LogLevels.ALL, ServerAcceptMode.CloseExisting, hostAddres.address, hostAddres.port, ChannelListener.Print());
}
else
{
Channel = Core.DNP3Manager.AddTCPServer(name, LogLevels.NONE, ServerAcceptMode.CloseExisting, hostAddres.address, hostAddres.port, ChannelListener.Print());
}
//Configuração Padrão de RTU é Outstation
Config = new OutstationStackConfig
{
databaseTemplate = dt
};
Config.link.remoteAddr = remoteDNP3Address;
Config.link.localAddr = localDNP3Addres;
DNP3ToSNMPBinaries = bins;
DNP3ToSNMPAnalogs = analogs;
DNP3ToSNMPCounters = counters;
Outstation = Channel.AddOutstation(name, RejectingCommandHandler.Instance, DefaultOutstationApplication.Instance, Config);
Outstation.Enable();
geminiMap = gmap;
Target = new SnmpTarget(clientAddress.address, clientAddress.port, Core.Settings.SNMPTimeout, Core.Settings.SNMPRetry);
foreach (KeyValuePair<int, int> map in DNP3ToSNMPBinaries)
{
Target.InsertObject(Core.OidLibrary.GetLabelFromId(map.Value), Core.OidLibrary.GetOidFromId(map.Value));
}
foreach (KeyValuePair<int, int> map in DNP3ToSNMPAnalogs)
{
Target.InsertObject(Core.OidLibrary.GetLabelFromId(map.Value), Core.OidLibrary.GetOidFromId(map.Value));
}
foreach (KeyValuePair<int, int> map in DNP3ToSNMPCounters)
{
Target.InsertObject(Core.OidLibrary.GetLabelFromId(map.Value), Core.OidLibrary.GetOidFromId(map.Value));
}
MonitorThread = new Timer(new TimerCallback(Update), null, TimeSpan.FromMilliseconds(10), TimeSpan.FromSeconds(Core.Settings.GatewayPoolingTime));
}
private List <SnmpResult <int, string> > MapMacAddresses(SnmpTarget snmpTarget)
{
var fdbAddressTable = ReadFdbAddressTable(snmpTarget);
var fdbPortTable = ReadFdbPortTable(snmpTarget);
var portMappings = fdbPortTable.Select(port => new
{
PortNumber = Convert.ToInt32(port.Value.ToString()),
Oid = port.Oid.ToString()
})
.GroupBy(mappings => mappings.PortNumber)
.Where(mappings => mappings.Any())
.ToDictionary(mapping => mapping.Key, mapping => mapping.ToList());
var macMappings = fdbAddressTable.Select(port => new
{
MacAddress = port.Value.ToString(),
Oid = port.Oid.ToString().Replace(SnmpOids.Dot1DTpFdbAddress, SnmpOids.Dot1DTpFdbPort)
})
.GroupBy(mappings => mappings.Oid)
.Where(mappings => mappings.Any())
.ToDictionary(mapping => mapping.Key, mapping => mapping.First().MacAddress);
var results = new List <SnmpResult <int, string> >();
foreach (var portMapping in portMappings)
{
string macAddress;
foreach (var oid in portMapping.Value)
{
if (macMappings.TryGetValue(oid.Oid, out macAddress))
{
var result = new SnmpResult <int, string>
{
Identifier = portMapping.Key,
Result = macAddress.Replace(' ', ':'),
SnmpTarget = snmpTarget,
Oid = ""
};
results.Add(result);
}
}
}
return(results);
}
private Manager(int id,
Snmp snmp, SnmpTarget target, Pdu pdu, OperType operType,
ref TableReader.GetTableOptions tableOptions, Barrier barrier,
uint nRepeats, bool asyncSync, bool debug)
{
id_ = id;
snmp_ = snmp;
target_ = target;
pdu_ = pdu;
operType_ = operType;
tableOptions_ = tableOptions;
barrier_ = barrier;
nRepeats_ = nRepeats;
asyncSync_ = asyncSync;
debug_ = debug;
}
public static IList Walk(Snmp snmp, SnmpTarget target, Pdu pdu, IList list)
{
if (!(pdu.Type == PduType.GetNext || pdu.Type == PduType.GetBulk))
{
throw new ArgumentException("Invalid Pdu type", "pdu");
}
if (pdu.Count != 1)
{
throw new ArgumentException("Expected a single Vb", "pdu");
}
try
{
Oid subtree = pdu[0].Oid;
while (true)
{
pdu = snmp.Invoke(pdu, target);
Vb lastVb = null;
foreach (Vb vb in pdu)
{
Oid oid = vb.Oid;
if (!oid.StartsWith(subtree) ||
vb.Value.SmiSyntax == SmiSyntax.EndOfMibView)
{
return(list);
}
lastVb = vb;
list.Add(vb);
}
pdu = pdu.Clone(lastVb);
}
}
catch (SnmpException e)
{
// SNMPv1 and NoSuchName?
if (e.ErrorStatus != SnmpError.NoSuchName)
{
throw;
}
}
return(list);
}
public GetTableState(Snmp snmp, Pdu pdu, SnmpTarget target,
Oid[] columnOids, Oid endRowIndex,
int maxRows, int rowsPerQuery,
Vb[] vbs,
AsyncCallback callback, object callbackData, bool sync)
{
this.snmp = snmp;
this.target = target;
this.columnOids = columnOids;
this.endRowIndex = endRowIndex;
this.maxRows = maxRows;
this.rowsPerQuery = rowsPerQuery;
this.rows = new Hashtable();
this.callback = callback;
this.callbackData = callbackData;
this.invoke = sync
? new SnmpInvoke(SyncInvoke)
: new SnmpInvoke(AsyncInvoke);
this.pdu = pdu;
this.vbs = vbs;
}
private static void Walk(Snmp snmp, Pdu pdu, SnmpTarget target,
bool asyncSync, bool show, bool debug, ref int ncalls)
{
Console.WriteLine("Rentre dans le Walk");
string thName = Thread.CurrentThread.Name;
Oid rootOid = pdu[0].Oid;
while (true)
{
if (debug)
{
PrintPdu(Console.Out, "Sending PDU to target " + target, pdu, debug);
}
Pdu resp = Invoke(snmp, pdu, target, asyncSync);
ncalls++;
Vb nextVb = resp[0];
Oid nextOid = nextVb.Oid;
if (!nextOid.StartsWith(rootOid))
{
break;
}
if (debug)
{
PrintPdu(Console.Out, "Received PDU:", resp, debug);
}
else
if (show)
{
SnmpSyntax val = nextVb.Value;
SmiSyntax type = val != null ? val.SmiSyntax : SmiSyntax.Null;
Console.WriteLine("[{0}]: {1},{2},{3}", thName, nextOid, val, type);
}
pdu = pdu.Clone(new Vb(nextOid));
}
}
private static void GotTrap(Snmp snmp, Pdu pdu, SnmpTarget target, object cbData)
{
if ((int)cbData != CB_DATA_)
{
Console.Error.WriteLine("*** Invalid callback data!");
}
if (threadId_ == null)
{
threadId_ = Interlocked.Increment(ref nextId_);
}
// Use a lock if you want do not want messages from various threads
// to be interleaved
ManagerUtilities.PrintPdu(Console.Out,
Now() + ": " + pdu.Type + " received from " + target,
pdu, true, threadId_);
Console.Out.WriteLine(
"Enterprise: " + pdu.NotifyEnterprise
+ "\nNotify OID : " + pdu.NotifyId
+ "\nV1 generic-trap : " + pdu.V1GenericTrap
+ "\nV1 specific-trap: " + pdu.V1SpecificTrap
+ "\nTimestamp : " + pdu.NotifyTimestamp);
if (pdu.Type == PduType.V1Trap)
{
Console.Out.WriteLine("v1TrapAddr: " + pdu.V1TrapAddress);
}
if (pdu.Type == PduType.Inform)
{
Vb vb = new Vb("1.3.6.1", new OctetStr("this is the response"));
pdu = new Pdu(PduType.Response, vb);
snmp.Invoke(pdu, target);
ManagerUtilities.PrintPdu(Console.Out,
"Response sent to " + target, pdu, true, threadId_);
}
// Long trap processing follows...
Thread.Sleep(5000);
}
static void Main(string[] args)
{
Core.Start();
SnmpTarget retAbelSantana = new SnmpTarget("10.7.5.150");
retAbelSantana.InsertObject("batteryTemperaturesValue", ".1.3.6.1.4.1.12148.10.10.7.5.0");
SnmpV2Packet result = retAbelSantana.GetUpdate();
IPEndpoint myEndPoint = new IPEndpoint("0.0.0.0", 20500);
Rtu rtu = new Rtu("Teste DNP3", myEndPoint, 2, 1);
ChangeSet changeSet;
int currentValue;
while (true)
{
if (result != null)
{
changeSet = new ChangeSet();
if (result.Pdu.ErrorStatus != 0)
{
Console.WriteLine("Error in SNMP reply. Error {0} index {1}",
result.Pdu.ErrorStatus,
result.Pdu.ErrorIndex);
}
else
{
currentValue = Convert.ToInt32(result.Pdu.VbList[0].Value.ToString());
changeSet.Update(new Analog(currentValue, 1, DateTime.Now), 0);
Console.WriteLine("Atualizando valor da analógica para " + currentValue);
rtu.Outstation.Load(changeSet);
}
}
else
{
Console.WriteLine("Erro SNMP Nulo");
}
Thread.Sleep(15000);
}
}
private static Hashtable DoSnmp(Snmp snmp, SnmpTarget target, Pdu pdu,
OperType operType, ref TableReader.GetTableOptions tableOptions,
uint repeat, bool asyncSync, bool debug)
{
int ncalls = 0;
Hashtable htResult = new Hashtable();
for (uint i = 0; i < repeat; i++)
{
using (IMemoryManager mgr = MemoryManager.GetMemoryManager())
{
bool show = (i % 1000) == 0;
if (show || debug)
{
//PrintPdu(Console.Out, "Sending PDU to target " + target, pdu, debug);
}
Pdu resPdu = DoSnmp(snmp, target, pdu,
operType, ref tableOptions,
asyncSync, show, debug, ref ncalls);
if ((show || debug) && resPdu != null)
{
//**********OLI***********//
//PrintPdu(Console.Out, "Received PDU:", resPdu, debug);
//************************//
htResult = ManagerUtilities.getValues(resPdu);
}
if (debug)
{
Console.WriteLine("Removing " + mgr.Count + " objects");
}
}
}
htResult.Add("count", ncalls);
return(htResult);
//return ncalls;
}
private static Pdu DoSnmp(Snmp snmp, SnmpTarget target, Pdu pdu,
OperType operType, ref TableReader.GetTableOptions tableOptions,
bool asyncSync, bool show, bool debug, ref int ncalls)
{
switch (operType)
{
case OperType.Walk:
Walk(snmp, pdu, target, asyncSync, show, debug, ref ncalls);
pdu = null;
break;
case OperType.Table:
Table(snmp, pdu, target, ref tableOptions, show, debug, ref ncalls);
pdu = null;
break;
default:
pdu = Invoke(snmp, pdu, target, asyncSync);
ncalls++;
break;
}
return(pdu);
}
private List <Vb> ReadFdbPortTable(SnmpTarget snmpTarget)
{
var community = new OctetString(
string.IsNullOrEmpty(snmpTarget.Community) ? "public" : snmpTarget.Community);
var param = new AgentParameters(community)
{
Version = SnmpVersion.Ver2
};
var agent = new IpAddress(snmpTarget.IpAddress);
var target = new UdpTarget((IPAddress)agent, 161, 2000, 1);
var rootOid = new Oid(SnmpOids.Dot1DTpFdbPort);
var lastOid = (Oid)rootOid.Clone();
var pdu = new Pdu(PduType.GetBulk)
{
NonRepeaters = 0, MaxRepetitions = 5
};
var results = new List <Vb>();
while (lastOid != null)
{
if (pdu.RequestId != 0)
{
pdu.RequestId += 1;
}
pdu.VbList.Clear();
pdu.VbList.Add(lastOid);
var result = (SnmpV2Packet)target.Request(pdu, param);
if (result != null)
{
if (result.Pdu.ErrorStatus != 0)
{
Console.WriteLine("Error in SNMP reply. Error {0} index {1}",
result.Pdu.ErrorStatus,
result.Pdu.ErrorIndex);
break;
}
foreach (var v in result.Pdu.VbList)
{
if (rootOid.IsRootOf(v.Oid))
{
Console.WriteLine("{0} ({1}): {2}",
v.Oid,
SnmpConstants.GetTypeName(v.Value.Type),
v.Value);
results.Add(v);
lastOid = v.Value.Type == SnmpConstants.SMI_ENDOFMIBVIEW ? null : v.Oid;
}
else
{
lastOid = null;
}
}
}
else
{
Console.WriteLine("No response received from SNMP agent.");
}
}
target.Close();
return(results);
}
/// <summary>
/// Retrieves an SNMP table from an agent.
/// </summary>
/// <param name="snmp">The SNMP session object to use.</param>
/// <param name="pdu">The PDU object used to convey the request type
/// and some security parameters (variable bindings are ignored; may
/// be an empty array).</param>
/// <param name="target">The SNMP target.</param>
/// <param name="columnOids">The OIDs of table columns to retrieve. The
/// columns should share table indexes (e.g., be a part of the same or
/// AUGMENTed table).</param>
/// <returns>The retrieved rows. Due to performance reasons, the rows
/// are returned as a jagged array but the array is guaranteed to be
/// rectangular. It contains either valid variable bindings or <b>null</b>
/// values for table "holes".</returns>
/// <remarks>This method returns table rows for the specified set of
/// columns. A typical example includes the retrieval of a complete
/// table. For more information on internal behavior, see the
/// <see cref="TableReader.UseAsyncInvoke"/> property.</remarks>
public static Vb[][] GetTable(Snmp snmp, Pdu pdu, SnmpTarget target,
Oid[] columnOids)
{
return(GetTable(snmp, pdu, target, columnOids,
null, 0));
}
private List <SnmpResult <int, long> > ProcessTargetsTraffic(SnmpTarget snmpTarget, string snmpOid,
string communityString = "public")
{
var results = new List <SnmpResult <int, long> >();
var community = new OctetString(communityString);
var param = new AgentParameters(community)
{
Version = SnmpVersion.Ver2
};
var agent = new IpAddress(snmpTarget.IpAddress);
var target = new UdpTarget((IPAddress)agent, 161, 2000, 1);
var rootOid = new Oid(snmpOid);
var lastOid = (Oid)rootOid.Clone();
var pdu = new Pdu(PduType.GetBulk)
{
NonRepeaters = 0, MaxRepetitions = 5
};
while (lastOid != null)
{
if (pdu.RequestId != 0)
{
pdu.RequestId += 1;
}
pdu.VbList.Clear();
pdu.VbList.Add(lastOid);
var result = (SnmpV2Packet)target.Request(pdu, param);
if (result != null)
{
if (result.Pdu.ErrorStatus != 0)
{
Console.WriteLine("Error in SNMP reply. Error {0} index {1}",
result.Pdu.ErrorStatus,
result.Pdu.ErrorIndex);
break;
}
foreach (var v in result.Pdu.VbList)
{
var current = new SnmpResult <int, long>();
if (rootOid.IsRootOf(v.Oid))
{
Console.WriteLine("{0} ({1}): {2}",
v.Oid,
SnmpConstants.GetTypeName(v.Value.Type),
v.Value);
current.Result = Convert.ToInt64(v.Value.ToString());
current.Identifier = Convert.ToInt32(v.Oid.ToString().Split('.').Last());
current.Oid = v.Oid.ToString();
current.SnmpTarget = snmpTarget;
results.Add(current);
lastOid = v.Value.Type == SnmpConstants.SMI_ENDOFMIBVIEW ? null : v.Oid;
}
else
{
lastOid = null;
}
}
}
else
{
Console.WriteLine("No response received from SNMP agent.");
}
}
target.Close();
return(results);
}
private static void AsyncDoSnmp(Snmp snmp, SnmpTarget target, Pdu pdu,
AsyncCallback callback, Object data)
{
snmp.BeginInvoke(pdu, target, callback, data);
}
public static IList Walk(Snmp snmp, SnmpTarget target, Pdu pdu)
{
return(Walk(snmp, target, pdu, new ArrayList(128)));
}