private string SendRequests(UdpTarget target, SecureAgentParameters param)
{
try
{
SnmpV3Packet indexResult = (SnmpV3Packet)target.Request(_index, param);
SnmpV3Packet descrResult = (SnmpV3Packet)target.Request(_descr, param);
SnmpV3Packet typeResult = (SnmpV3Packet)target.Request(_type, param);
if (indexResult.ScopedPdu.ErrorStatus != 0 || descrResult.ScopedPdu.ErrorStatus != 0 || typeResult.ScopedPdu.ErrorStatus != 0)
{
Logger.Log("SNMP Request Error", Logger.MessageType.ERROR);
return("<color><red>ERROR: packet error status = " + indexResult.ScopedPdu.ErrorStatus.ToString() + " and not ZERO");
}
else
{
for (int i = 0; i < indexResult.ScopedPdu.VbCount; i++)
{
_output += "Interface " + indexResult.ScopedPdu.VbList[i].Value.ToString() + ": Type " + typeResult.ScopedPdu.VbList[i].Value.ToString() + " -> " + descrResult.ScopedPdu.VbList[i].Value.ToString() + "\n";
}
Logger.Log("Successfully performed SNMP Device Request", Logger.MessageType.INFORM);
return(_output);
}
}
catch (Exception)
{
Logger.Log("SNMP Request Error", Logger.MessageType.ERROR);
return("<color><red>ERROR: sending requests failed");
}
}
/// <summary>
/// Отправляет SNMP запрос на IP адрес, возвращает ответ.
/// </summary>
/// <param name="ipAddress">IP адрес</param>
/// <returns>Ответ</returns>
private SnmpV1Packet SendRequest(string ipAddress)
{
// Параметры запроса.
SnmpV1Packet result;
var community = new OctetString("public");
var param = new AgentParameters(community)
{
Version = SnmpVersion.Ver1
};
var agent = new IpAddress(ipAddress);
var target = new UdpTarget((IPAddress)agent, 161, 450, 1);
var pdu = new Pdu(PduType.Get);
// Oid сетевого имени устройства.
pdu.VbList.Add("1.3.6.1.2.1.1.5.0");
// Oid модели.
pdu.VbList.Add("1.3.6.1.2.1.25.3.2.1.3.1");
// Oid серийного номера.
pdu.VbList.Add("1.3.6.1.2.1.43.5.1.1.17.1");
// Отправка запроса.
result = (SnmpV1Packet)target.Request(pdu, param);
// Ошибок нет.
if (result.Pdu.ErrorStatus == 0)
{
// Если сетевое имя пустое.
if (string.IsNullOrWhiteSpace(result.Pdu.VbList[0].Value.ToString()))
{
var kyoceraPdu = new Pdu(PduType.Get);
// Oid сетевого имени устройства.
kyoceraPdu.VbList.Add("1.3.6.1.4.1.1347.40.10.1.1.5.1");
// Oid модели.
kyoceraPdu.VbList.Add("1.3.6.1.2.1.25.3.2.1.3.1");
// Oid серийного номера.
kyoceraPdu.VbList.Add("1.3.6.1.2.1.43.5.1.1.17.1");
result = (SnmpV1Packet)target.Request(kyoceraPdu, param);
}
}
// При ошибке запросить с параметрами для зебры.
else
{
var zebraPdu = new Pdu(PduType.Get);
// Oid сетевого имени устройства.
zebraPdu.VbList.Add("1.3.6.1.2.1.1.5.0");
// Oid модели.
zebraPdu.VbList.Add("1.3.6.1.2.1.25.3.2.1.3.1");
// Oid серийного номера.
zebraPdu.VbList.Add("1.3.6.1.4.1.10642.1.9.0");
result = (SnmpV1Packet)target.Request(zebraPdu, param);
}
target.Close();
return(result);
}
private static string[] SNMPget(string ip, string[] oid)
{
var output = new string[oid.Length];
var agent = new IpAddress(ip);
var pdu = new Pdu(PduType.Get);
foreach (var item in oid)
{
pdu.VbList.Add(item);
}
using (var target = new UdpTarget((IPAddress)agent, 161, 512, 1))
{
try
{
var result2 = (SnmpV2Packet)target.Request(pdu, new AgentParameters(SnmpVersion.Ver2, new OctetString("public")));
for (int i = 0; i < result2.Pdu.VbList.Count; i++)
{
if (oid[i] == "1.3.6.1.2.1.25.3.5.1.2.1")
{
output[i] = ((OctetString)(result2.Pdu.VbList[i].Value)).ToArray()[0].ToString();
}
else
{
output[i] = result2.Pdu.VbList[i].Value.ToString();
}
}
}
catch (Exception)
{
var result1 = (SnmpV1Packet)target.Request(pdu, new AgentParameters(SnmpVersion.Ver1, new OctetString("public")));
for (int i = 0; i < result1.Pdu.VbList.Count; i++)
{
if (oid[i] == "1.3.6.1.2.1.25.3.5.1.2.1")
{
//{
output[i] = ((OctetString)(result1.Pdu.VbList[i].Value)).ToArray()[0].ToString();
}
/*if (output[i] == "\0" || output[i] == "Null" || output[i] == "" || output[i] == "00 00")
* output[i] = "0";*/
//}
else
{
output[i] = result1.Pdu.VbList[i].Value.ToString();
}
}
}
return(output);
}
}
public SnmpV1Packet GetRequest(string OID)
{
this.param.Version = SnmpVersion.Ver1;
this.pdu = new Pdu(PduType.Get);
this.pdu.VbList.Add(OID);
result = (SnmpV1Packet)target.Request(pdu, param);
OidNumber = result.Pdu.VbList[0].Oid.ToString();
type = SnmpConstants.GetTypeName(result.Pdu.VbList[0].Value.Type);
value = result.Pdu.VbList[0].Value.ToString();
ipPort = address + ":161";
return(result);
}
public string GetSend(string getOid, string Version, string communityRead, string IP, int Port)
{
OctetString community = new OctetString(communityRead);
AgentParameters param = new AgentParameters(community);
if (Version == "V1")
{
param.Version = SnmpVersion.Ver1;
}
if (Version == "V2")
{
param.Version = SnmpVersion.Ver2;
}
IpAddress agent = new IpAddress(IP);
UdpTarget target = new UdpTarget((IPAddress)agent, Port, 2000, 1);
Pdu pdu = new Pdu(PduType.Get);
try
{
if (pdu.RequestId != 0)
{
pdu.RequestId += 1;
}
pdu.VbList.Clear();
pdu.VbList.Add(getOid);
if (Version == "V1")
{
result = (SnmpV1Packet)target.Request(pdu, param);
}
if (Version == "V2")
{
result = (SnmpV2Packet)target.Request(pdu, param);
}
}
catch (Exception e) { }
target.Close();
using (IDbConnection connection = new SqlConnection(ConfigurationManager.ConnectionStrings["DeviceConnection"].ConnectionString))
{
connection.Query <WalkTowerDevice>($"update WalkTowerDevice set Type='{result.Pdu.VbList[0].Value.ToString()}' where WalkOID='{getOid}' and IP='{IP}'");
}
return(result.Pdu.VbList[0].Value.ToString());
}
private string GetCounters(string ip, string query)
{
try
{
OctetString community = new OctetString("public");
AgentParameters param = new AgentParameters(community);
param.Version = SnmpVersion.Ver1;
IpAddress agent = new IpAddress(ip);
UdpTarget target = new UdpTarget((IPAddress)agent, 161, 3000, 1);
Pdu pdu = new Pdu(PduType.Get);
pdu.VbList.Add(query);
SnmpV1Packet result = (SnmpV1Packet)target.Request(pdu, param);
if (result != null)
{
return(result.Pdu.VbList[0].Value.ToString());
}
else
{
return("-");
}
}
catch
{
return("-");
}
}
private uint ParameterCountRequest(SecureAgentParameters param, UdpTarget target)
{
Oid deviceNr = new Oid(_ifNr);
Pdu devices = new Pdu(PduType.Get);
devices.VbList.Add(deviceNr);
try
{
SnmpV3Packet devicesResult = (SnmpV3Packet)target.Request(devices, param);
if (devicesResult.ScopedPdu.ErrorStatus != 0)
{
return(0);
}
else
{
return(Convert.ToUInt32(devicesResult.ScopedPdu.VbList[0].Value.ToString()));
}
}
catch (Exception)
{
return(0);
}
}
private void ExecuteRequest(UdpTarget target, SecureAgentParameters param)
{
Oid _name = new Oid("1.3.6.1.2.1.1.5.0");
Pdu _namePacket = new Pdu(PduType.Get);
_namePacket.VbList.Add(_name);
try
{
SnmpV3Packet nameResult = (SnmpV3Packet)target.Request(_namePacket, param);
if (nameResult.ScopedPdu.VbList[0].Value.ToString().ToLowerInvariant() == System.Environment.MachineName.ToLowerInvariant())
{
Logger.Log("SNMP Service seems to work", Logger.MessageType.INFORM);
outp.outState = JobOutput.OutState.Success;
}
else
{
Logger.Log("SNMP Service seems to be dead", Logger.MessageType.ERROR);
outp.outState = JobOutput.OutState.Failed;
}
}
catch (Exception)
{
Logger.Log("SNMP Service seems to be dead", Logger.MessageType.ERROR);
outp.outState = JobOutput.OutState.Exception;
}
}
private void sendSetCommand(string OID, string parameters)
{
//tmrRequest.Enabled = false;
UdpTarget target = new UdpTarget((IPAddress) new IpAddress(txtCurrentIP.Text));
Pdu pdu = new Pdu(PduType.Set);
pdu.VbList.Add(new Oid(OID), new OctetString(parameters));
AgentParameters aparam = new AgentParameters(SnmpVersion.Ver2, new OctetString("private"));
// Response packet
SnmpV2Packet response;
try
{
// Send request and wait for response
response = target.Request(pdu, aparam) as SnmpV2Packet;
}
catch (Exception ex)
{
WriteMessage(ex.ToString());
target.Close();
return;
}
//tmrRequest.Enabled = true;
}
private void Snmp_Get(string ip, string oid, string comm)
{
OctetString community = new OctetString(comm);
AgentParameters param = new AgentParameters(community);
param.Version = SnmpVersion.Ver1;
IpAddress agent = new IpAddress(ip);
UdpTarget target = new UdpTarget((IPAddress)agent, 161, 2000, 1);
Pdu pdu = new Pdu(PduType.Get);
pdu.VbList.Add(oid);
SnmpV1Packet result = (SnmpV1Packet)target.Request(pdu, param);
if (result != null)
{
if (result.Pdu.ErrorStatus != 0)
{
this.txtTest.Text += string.Format("Error in SNMP reply. Error {0} index {1} \r\n", result.Pdu.ErrorStatus, result.Pdu.ErrorIndex);
}
else
{
int index = this.dataGridView1.Rows.Add();
this.dataGridView1.Rows[index].Cells[0].Value = "hello";
this.dataGridView1.Rows[index].Cells[1].Value = result.Pdu.VbList[0].Oid.ToString();
this.dataGridView1.Rows[index].Cells[2].Value = SnmpConstants.GetTypeName(result.Pdu.VbList[0].Value.Type);
this.dataGridView1.Rows[index].Cells[3].Value = result.Pdu.VbList[0].Value.ToString();
}
}
}
/// <summary>
/// 带有异步回调的GetResponse;
/// </summary>
/// <param name="callback"></param>
/// <param name="PduList"></param>
/// <param name="Community"></param>
/// <param name="IpAddr"></param>
public override void GetRequest(AsyncCallback callback, List <string> PduList, string Community, string IpAddr)
{
// 当确认全部获取SNMP数据后，调用callback回调;
SnmpHelperResult res = new SnmpHelperResult();
OctetString community = new OctetString(Community);
AgentParameters param = new AgentParameters(community);
Dictionary <string, string> rest = new Dictionary <string, string>();
param.Version = SnmpVersion.Ver2;
// 创建代理(基站);
UdpTarget target = ConnectToAgent(Community, IpAddr);
// Pdu请求形式Get;
Pdu pdu = new Pdu(PduType.Get);
foreach (string pdulist in PduList)
{
pdu.VbList.Add(pdulist);
}
Task tsk = Task.Factory.StartNew(() => {
// 接收结果;
m_Result = (SnmpV2Packet)target.Request(pdu, param);
if (m_Result != null)
{
// ErrorStatus other then 0 is an error returned by
// the Agent - see SnmpConstants for error definitions
if (m_Result.Pdu.ErrorStatus != 0)
{
// agent reported an error with the request
Console.WriteLine("Error in SNMP reply. Error {0} index {1}",
m_Result.Pdu.ErrorStatus,
m_Result.Pdu.ErrorIndex);
rest.Add(m_Result.Pdu.ErrorIndex.ToString(), m_Result.Pdu.ErrorStatus.ToString());
res.SetSNMPReslut(rest);
Thread.Sleep(3111);
callback(res);
}
else
{
for (int i = 0; i < m_Result.Pdu.VbCount; i++)
{
rest.Add(m_Result.Pdu.VbList[i].Oid.ToString(), m_Result.Pdu.VbList[i].Value.ToString());
res.SetSNMPReslut(rest);
Thread.Sleep(3111);
callback(res);
}
}
}
else
{
Console.WriteLine("No response received from SNMP agent.");
}
target.Close();
});
}
private System.Collections.Generic.Dictionary <string, string> ReceiveResponseWithLeafVB(LeafVarBinding leafVb, Pdu pdu, UdpTarget target, IAgentParameters param)
{
if (leafVb.VarBindings.Count < 1)
{
throw new System.ArgumentNullException("The variables for the " + pdu.Type + " opertion is emtpy.");
}
pdu.VbList.Clear();
this.configPduVb(leafVb, pdu);
SnmpPacket snmpPacket = target.Request(pdu, param);
this.validateResponse(snmpPacket, pdu);
System.Collections.Generic.Dictionary <string, string> dictionary = new System.Collections.Generic.Dictionary <string, string>();
foreach (Vb current in snmpPacket.Pdu.VbList)
{
if (current.Value.Type != SnmpConstants.SMI_NOSUCHINSTANCE && current.Value.Type != SnmpConstants.SMI_NOSUCHOBJECT && current.Value.Type != SnmpConstants.SMI_ENDOFMIBVIEW)
{
string key = current.Oid.ToString();
if (!dictionary.ContainsKey(key))
{
dictionary.Add(key, current.Value.ToString());
}
}
}
return(dictionary);
}
/*
* Fetching informations from Printer.
*/
private void setCheckerPrinter(AgentParameters param, UdpTarget target, string s)
{
try
{
// Pdu class used for all requests
Pdu pdu = new Pdu(PduType.Get);
pdu.VbList.Add(s);
// Make SNMP request
SnmpV1Packet result = (SnmpV1Packet)target.Request(pdu, param);
printer.uniquePrinterNumber = result.Pdu.VbList[0].Value.ToString();
printer.setBilling(getBilling(param, target, OID_Billing));
addMessagesToList(param, target);
printer.setStatus(getStatus(param, target, OID_Status));
//Console.WriteLine(getMessages(param, target, OID_Message5).Equals("Null"));
//printer.setMessage(getMessages(param,target,OID_Message1));
//Console.WriteLine(printer.getName() + " message: " + getMessages(param, target, OID_Message3));
}
catch (SnmpException e)
{
printer.setBilling("0");
Console.WriteLine(e.Message);
}
}
/**
* Preparing informations for labeling.
*/
private string getBilling(AgentParameters param, UdpTarget target, string OID_Billing)
{
// Pdu class used for all requests
Pdu pdu = new Pdu(PduType.Get);
pdu.VbList.Add(OID_Billing);
// Make SNMP request
SnmpV1Packet result = (SnmpV1Packet)target.Request(pdu, param);
long value = 0;
try
{
value = long.Parse(result.Pdu.VbList[0].Value.ToString());
}
catch (OverflowException e)
{
Console.WriteLine(e.Message);
}
printer.setBilling(value.ToString("#,#", CultureInfo.InvariantCulture));
return(value.ToString("#,#", CultureInfo.InvariantCulture));
}
public bool GetPortBInstalled(UdpTarget target)
{
try
{
var pdu = Pdu.GetPdu(new VbCollection {
CreateVb(conv4000ConvBInstalled.Default.oid)
});
var param = new AgentParameters(SnmpVersion.Ver2, new OctetString(pdu.Type == PduType.Get ? ReadCommunity : WriteCommunity));
var response = target.Request(pdu, param);
if (!(response is SnmpV2Packet))
{
return(false);
}
if (response.Pdu.ErrorStatus != 0)
{
return(false);
}
return((Integer32)response.Pdu.VbList[0].Value == 1 ? true : false);
}
catch (Exception ex)
{
_logger.WriteMessage(ex.Message, DebugLevel.ERROR);
return(false);
}
}
private void GetMore(int n)
{
OctetString community = new OctetString(txtConStr.Text);
AgentParameters param = new AgentParameters(community);
param.Version = SnmpVersion.Ver1;
try
{
IpAddress agent = new IpAddress(txtIPAgent.Text);
UdpTarget target = new UdpTarget((IPAddress)agent, 161, 2000, 1);
Pdu pdu = new Pdu(PduType.Get);
string[] row;
for (int i = 1; i <= n; i++)
{
pdu.VbList.Add("1.3.6.1.2.1.2.2.1.2." + i.ToString());
pdu.VbList.Add("1.3.6.1.2.1.2.2.1.3." + i.ToString());
pdu.VbList.Add("1.3.6.1.2.1.2.2.1.5." + i.ToString());
pdu.VbList.Add("1.3.6.1.2.1.2.2.1.10." + i.ToString());
pdu.VbList.Add("1.3.6.1.2.1.2.2.1.16." + i.ToString());
SnmpV1Packet result = (SnmpV1Packet)target.Request(pdu, param);
row = new string[] { i.ToString(), result.Pdu.VbList[0].Value.ToString(), GetType(int.Parse(result.Pdu.VbList[1].Value.ToString())), result.Pdu.VbList[2].Value.ToString(), result.Pdu.VbList[3].Value.ToString(), result.Pdu.VbList[4].Value.ToString() };
dgvList.Rows.Add(row);
pdu.Reset();
}
target.Close();
}
catch (Exception ex)
{
rtbGuiGet.Text = "Đã xảy ra lỗi: " + ex.Message.ToString();
}
}
//SNMP set方法
private void setSnmp(string oid, string host, int port, string value)
{
string hostIP;
int Port;
string Oid;
string Value;
Oid = oid;
hostIP = host;
Port = port;
Value = value;
//共同体类型
OctetString community = new OctetString("private");
AgentParameters param = new AgentParameters(community);
//设置snmp版本
param.Version = SnmpVersion.Ver2;
IpAddress agent = new IpAddress(hostIP);
//构建目标
UdpTarget target = new UdpTarget((IPAddress)agent, port, 2000, 1);
Pdu pdu = new Pdu(PduType.Set);
pdu.VbList.Add(new SnmpSharpNet.Oid(Oid), new OctetString(Value));
//发送snmp请求
SnmpV2Packet result = (SnmpV2Packet)target.Request(pdu, param);
}
public string getSnmp(string oid, string host, int port)
{
string hostIP;
int Port;
string Oid;
string get = "";
Oid = oid;
hostIP = host;
Port = port;
//共同体类型
OctetString community = new OctetString("public");
AgentParameters param = new AgentParameters(community);
//设置snmp版本
param.Version = (int)SnmpVersion.Ver1;
IpAddress agent = new IpAddress(hostIP);
//构建目标
UdpTarget target = new UdpTarget((IPAddress)agent, port, 2000, 1);
Pdu pdu = new Pdu(PduType.Get);
pdu.VbList.Add(Oid);
//发送snmp请求
SnmpV1Packet result = (SnmpV1Packet)target.Request(pdu, param);
get = result.Pdu.VbList[0].Value.ToString();
return(get);
}
}//将对应id的条目的值设置为data
private void GetPrinterResponse(object input_id)
{
string id = input_id.ToString();
string ipaddr = null;
for (int i = 0; i < Common.dt_printer.Rows.Count; i++)
{
string tmp = Common.dt_printer.Rows[i]["Id"].ToString();
if (tmp == (string)id)
{
ipaddr = Common.dt_printer.Rows[i]["dev_ip"].ToString();
}
}
int feq = Common.getfequency((string)id);
OctetString community = new OctetString("public");
AgentParameters param = new AgentParameters(community);
param.Version = SnmpVersion.Ver1;
IpAddress agent = new IpAddress(ipaddr);
UdpTarget target = new UdpTarget((IPAddress)agent, 161, 2000, 1);
Pdu pdu = new Pdu(PduType.Get);
pdu.VbList.Add("1.3.6.1.2.1.43.11.1.1.9.1.1");
for (; ;)
{
if (canceltokensource.IsCancellationRequested == true)
{
Common.writetologfrm(string.Format("打印机 设备ID:{1} 线程{0}终止", Thread.CurrentThread.ManagedThreadId, id.ToString()));
target.Dispose();
this.Close();
break;//若收到cancellationToken消息则取消此线程
}
try
{
SnmpV1Packet result = (SnmpV1Packet)target.Request(pdu, param);
if (result != null)
{
if (result.Pdu.ErrorStatus != 0)
{
Common.writetologfrm(string.Format("打印机 ID:{0} 获取信息异常码{1}在{2}上", (string)id, result.Pdu.ErrorStatus, result.Pdu.ErrorIndex));
}
else
{
int i = Convert.ToInt32(result.Pdu.VbList[0].Value.ToString());
this.Invoke(new MethodInvoker(() => { show_data(id, i); }));
}
}
else
{
Common.writetologfrm(string.Format("打印机 ID:{0} 未收到回复", (string)id));
}
}
catch {
Common.writetologfrm(string.Format("打印机 ID:{0} 获取信息异常", (string)id));
}
Thread.Sleep(Common.getfequency((string)id));
}
//target.Dispose();
}//Printer线程工作内容
/// <summary>
/// Gets the specific values of an OID
/// </summary>
/// <param name="ip">The ip.</param>
/// <param name="oid">The oid.</param>
/// <returns></returns>
public static string GetOidValue(string ip, string oid)
{
var oidValue = "";
try
{
if (oid.Length > 0)
{
var community = new OctetString("public");
var param = new AgentParameters(community)
{
Version = SnmpVersion.Ver1
};
var agent = new IpAddress(ip);
var target = new UdpTarget((IPAddress)agent, 161, 5000, 1);
var pdu = new Pdu(PduType.Get);
pdu.VbList.Add(oid);
var result = (SnmpV1Packet)target.Request(pdu, param);
if (result?.Pdu.ErrorStatus == 0)
{
oidValue = result.Pdu.VbList[0].Value.ToString();
}
target.Close();
}
}
catch (Exception)
{
// ignored
}
return(oidValue);
}
/// <summary>
/// Sends an SNMP request for the given OIDs.
/// </summary>
/// <param name="oids">The OIDs to request via SNMP.</param>
/// <returns>The response SnmpPacket with the data.</returns>
private SnmpPacket SendRequest(IEnumerable <Oid> oids)
{
var pduType = PduType.Get;
Interlocked.CompareExchange(ref nextRequestId, 0, int.MaxValue); // wrap the request ID
var requestId = Interlocked.Increment(ref nextRequestId);
Pdu pdu = new Pdu(pduType)
{
RequestId = requestId // 0 --> generate random ID on encode, anyhting else --> use that value for request ID
};
foreach (Oid item in oids)
{
pdu.VbList.Add(item);
}
log.Debug($"Using request ID '{requestId}' for PDU with {pdu.VbCount} elements to {this.Address}");
using (var target = new UdpTarget((IPAddress)this.Address, this.Options.Port, Convert.ToInt32(this.Options.Timeout.TotalMilliseconds), this.Options.Retries))
{
SnmpPacket result = target.Request(pdu, this.QueryParameters);
SnmpAbstraction.RecordSnmpRequest(this.Address, pdu, result);
return(result);
}
}
private void OnTimedEvent(object source, ElapsedEventArgs e)
{
OctetString community = new OctetString("public");
// Define agent parameters class
AgentParameters param = new AgentParameters(community);
// Set SNMP version to 1 (or 2)
param.Version = SnmpVersion.Ver2;
// Construct the agent address object
// IpAddress class is easy to use here because
// it will try to resolve constructor parameter if it doesn't
// parse to an IP address
IpAddress agent = new IpAddress("127.0.0.1");
UdpTarget target = new UdpTarget((IPAddress)agent, 161, 2000, 1);
// Pdu class used for all requests
Pdu pdu = new Pdu(PduType.Get);
string oid = whatShouldIAdd("Adding new property to PDU list");
pdu.VbList.Add(oid);
SnmpV2Packet result = (SnmpV2Packet)target.Request(pdu, param);
// If result is null then agent didn't reply or we couldn't parse the reply.
if (result != null)
{
// ErrorStatus other then 0 is an error returned by
// the Agent - see SnmpConstants for error definitions
if (result.Pdu.ErrorStatus != 0)
{
// agent reported an error with the request
Console.WriteLine("Error in SNMP reply. Error {0} index {1}",
result.Pdu.ErrorStatus,
result.Pdu.ErrorIndex);
}
else
{
for (int i = 0; i < pdu.VbList.Count; i++)
{
resultString = String.Format("(0}) ({1}): {2}",
result.Pdu.VbList[0].Oid.ToString(),
SnmpConstants.GetTypeName(result.Pdu.VbList[0].Value.Type).ToString(),
result.Pdu.VbList[0].Value.ToString());
MessageBox.Show(resultString);
watchIterations = watchIterations + 1;
if (watchIterations > 5)
{
GeneratorsTimer.Enabled = false;
}
}
}
}
else
{
Console.WriteLine("No response received from SNMP agent.");
}
}
public static SnmpPacket getNextRequest(string OID, string host, UdpTarget target, AgentParameters param)
{
Pdu pdu = new Pdu(PduType.GetNext);
pdu.VbList.Add(OID);
SnmpPacket result = (SnmpPacket)target.Request(pdu, param);
return(result);
}
private void btnSNMPSend_Click(object sender, EventArgs e)
{
try
{
OctetString community = new OctetString("public");
AgentParameters param = new AgentParameters(community);
param.Version = SnmpVersion.Ver2;
IpAddress agent = new IpAddress(txtCurrentIP.Text);
UdpTarget target = new UdpTarget((System.Net.IPAddress)agent, 161, 2000, 1);
// Pdu class used for all requests
Pdu pdu = new Pdu(PduType.Get);
foreach (DataGridViewRow dr in dgvInstructions.SelectedRows)
{
pdu.VbList.Add(dr.Cells["InstructionBytes"].Value.ToString());
}
// Make SNMP request
SnmpV2Packet result = (SnmpV2Packet)target.Request(pdu, param);
// If result is null then agent didn't reply or we couldn't parse the reply.
if (result != null)
{
// ErrorStatus other then 0 is an error returned by
// the Agent - see SnmpConstants for error definitions
if (result.Pdu.ErrorStatus != 0)
{
// agent reported an error with the request
txtReceivedBytesASCII.Text = String.Format("Error in SNMP reply. Error {0} index {1}",
result.Pdu.ErrorStatus,
result.Pdu.ErrorIndex);
}
else
{
// Reply variables are returned in the same order as they were added
// to the VbList
for (int i = 0; i < result.Pdu.VbList.Count; i++)
{
txtReceivedBytesASCII.Text += result.Pdu.VbList[i].Oid.ToString() + ", " + SnmpConstants.GetTypeName(result.Pdu.VbList[i].Value.Type) + ", " +
result.Pdu.VbList[i].Value.ToString() + ", " + dgvInstructions.SelectedRows[i].Cells["Explanation"].Value.ToString() + Environment.NewLine;
}
}
}
else
{
//txtConsole.Text = String.Format("No response received from SNMP agent.");
}
target.Close();
}
catch (Exception exp)
{
txtReceivedBytesASCII.Text = exp.ToString();
}
}
public DownConverterHandler()
{
// Start status polling
_worker = new BackgroundWorker {
WorkerSupportsCancellation = true
};
_worker.DoWork += (sender, args) =>
{
var worker = sender as BackgroundWorker;
var lastKeepAliveCheck = DateTime.Now;
var lastKeepAlive = DateTime.Now;
var status = new DownConverterStatusEventArgs();
while (!worker.CancellationPending)
{
Thread.Sleep(100);
var now = DateTime.Now;
if ((now - lastKeepAliveCheck).TotalSeconds > 5)
{
using (var target = new UdpTarget(IPAddress.Parse(DeviceIp)))
{
try
{
var pdu = Pdu.GetPdu(new VbCollection(new[] { new Vb(new Oid("1.3.6.1.2.1.1.1.0")) }));
var param = new AgentParameters(SnmpVersion.Ver2, new OctetString("public"));
var result = target.Request(pdu, param) as SnmpV2Packet;
if (result != null && result.Pdu.ErrorStatus == 0)
{
lastKeepAlive = DateTime.Now;
if (!status.IsAlive)
{
status.IsAlive = true;
UpdateDeviceStatus(status);
}
}
}
catch { }
}
lastKeepAliveCheck = now;
}
if ((now - lastKeepAlive).TotalSeconds > 30)
{
if (status.IsAlive)
{
status.IsAlive = false;
UpdateDeviceStatus(status);
}
}
}
};
_worker.RunWorkerAsync();
}
public string GetSend(string getOid, string Version, string communityRead, string IP, int Port)
{
OctetString community = new OctetString(communityRead);
AgentParameters param = new AgentParameters(community);
if (Version == "V1")
{
param.Version = SnmpVersion.Ver1;
}
if (Version == "V2")
{
param.Version = SnmpVersion.Ver2;
}
IpAddress agent = new IpAddress(IP);
UdpTarget target = new UdpTarget((IPAddress)agent, Port, 2000, 1);
Pdu pdu = new Pdu(PduType.Get);
try
{
if (pdu.RequestId != 0)
{
pdu.RequestId += 1;
}
pdu.VbList.Clear();
pdu.VbList.Add(getOid);
if (Version == "V1")
{
result = (SnmpV1Packet)target.Request(pdu, param);
}
if (Version == "V2")
{
result = (SnmpV2Packet)target.Request(pdu, param);
}
}
catch (Exception e) { }
target.Close();
deviceWalkData.UpdateWalkTowerDeviceGetSend(result, getOid, IP);
return(result.Pdu.VbList[0].Value.ToString());
}
//多執行緒檢察linux
private void CheckLinuxDiskThread(object obj)
{
//0 = TargetName, 1= TargetIP ,2=TargetAlert ,3=TargetSpaceLog ,4=id ,5=TargetWarning
string[] Askitem = new string[6];
Askitem = (string[])obj;
try
{
// SNMP community name
OctetString community = new OctetString("public");
AgentParameters param = new AgentParameters(community);
param.Version = SnmpVersion.Ver1;
IpAddress agent = new IpAddress(Askitem[1]);//TargetIP
// Construct target
UdpTarget target = new UdpTarget((IPAddress)agent, 161, 2000, 1);
// Pdu class used for all requests
Pdu pdu = new Pdu(PduType.Get);
pdu.VbList.Add(".1.3.6.1.4.1.2021.9.1.2.1"); //代號
pdu.VbList.Add(".1.3.6.1.4.1.2021.9.1.6.1"); //總空間
pdu.VbList.Add(".1.3.6.1.4.1.2021.9.1.8.1"); //已用空間
// Make SNMP request
SnmpV1Packet result = (SnmpV1Packet)target.Request(pdu, param);
//取得 總空間kb 已用空間kb 分割區帶號
int AllKB = int.Parse(result.Pdu.VbList[1].Value.ToString());
int UseKB = int.Parse(result.Pdu.VbList[2].Value.ToString());
int FreeKB = AllKB - UseKB;
int AllMB = AllKB / 1024;
int FreeMB = FreeKB / 1024;
int AllGB = AllMB / 1024;
int FreeGB = FreeMB / 1024;
string ID = result.Pdu.VbList[0].Value.ToString();
//委派傳出
string[] text = new string[10];
text[0] = Askitem[0]; //名稱
text[1] = ID; //代號
text[2] = AllMB.ToString(); //總空間mb
text[3] = AllGB.ToString(); //總空間gb
text[4] = FreeMB.ToString(); //剩餘mb
text[5] = FreeGB.ToString(); //剩餘gb
text[6] = Askitem[2]; //警戒值
text[7] = "Linux"; //檢察linux
text[8] = Askitem[4]; //WindowsTargetID
text[9] = Askitem[5]; //TargetWaning
this.Invoke(new D_AddAlreadyGridView(AddAlreadyGridView), new object[] { text });
//如果低於警戒值
if (FreeMB <= Convert.ToInt32(Askitem[2]))
{
this.Invoke(new D_AddAlertGridView(AddAlertGridView), new object[] { text });
}
}
catch (Exception x)
{
this.Invoke(new D_AddErrorList(AddErrorList), Askitem[0] + " >>> " + x.Message.ToString());
}
this.Invoke(new D_AddProgress(AddProgress), null);
}
public string GetHersteller()
{
// SNMP community name
OctetString community = new OctetString("public");
// Define agent parameters class
AgentParameters param = new AgentParameters(community);
// Set SNMP version to 1 (or 2)
param.Version = SnmpVersion.Ver1;
// Construct the agent address object
// IpAddress class is easy to use here because
// it will try to resolve constructor parameter if it doesn't
// parse to an IP address
IpAddress agent = new IpAddress(Ip);
// Construct target
UdpTarget target = new UdpTarget((IPAddress)agent, 161, 250, 1);
// Pdu class used for all requests
Pdu pdu = new Pdu(PduType.Get);
pdu.VbList.Add(".1.3.6.1.2.1.25.3.2.1.3.1"); //sysDescr
// Make SNMP request
try
{
SnmpV1Packet result = (SnmpV1Packet)target.Request(pdu, param);
// If result is null then agent didn't reply or we couldn't parse the reply.
if (result != null)
{
// ErrorStatus other then 0 is an error returned by
// the Agent - see SnmpConstants for error definitions
if (result.Pdu.ErrorStatus != 0)
{
// agent reported an error with the request
return("Error in SNMP reply.");
}
else
{
// Reply variables are returned in the same order as they were added
// to the VbList
target.Close();
return(result.Pdu.VbList[0].Value.ToString());
}
}
else
{
target.Close();
return("No response received from SNMP agent.");
}
}
catch { target.Close(); return("Fehler"); }
}
private bool GetAllConfigurationPdu(UdpTarget target)
{
VbCollection vbCollection = new VbCollection();
vbCollection.Add(conv4000ConvAInstalled.Default.oid); //0
vbCollection.Add(conv4000ConvAFrequency.Default.oid); //1
vbCollection.Add(conv4000ConvAMute.Default.oid); //2
vbCollection.Add(conv4000ConvAConfigMuteMode.Default.oid); //3
vbCollection.Add(conv4000ConvAAttenuator.Default.oid); //4
vbCollection.Add(conv4000ConvASlope.Default.oid); //5
vbCollection.Add(conv4000ConvAAttenuationOffset.Default.oid); //6
vbCollection.Add(conv4000convASpectrumInversion.Default.oid); //7
vbCollection.Add(conv4000ConvBInstalled.Default.oid); //8
vbCollection.Add(conv4000ConvBFrequency.Default.oid); //9
vbCollection.Add(conv4000ConvBMute.Default.oid); //10
vbCollection.Add(conv4000ConvBConfigMuteMode.Default.oid); //11
vbCollection.Add(conv4000ConvBAttenuator.Default.oid); //12
vbCollection.Add(conv4000ConvBSlope.Default.oid); //13
vbCollection.Add(conv4000convBSpectrumInversion.Default.oid); //14
vbCollection.Add(conv4000PSA12VFault.Default.oid); //15
vbCollection.Add(conv4000PSA08VFault.Default.oid); //16
vbCollection.Add(conv4000PSA05VFault.Default.oid); //17
vbCollection.Add(conv4000PSB12VFault.Default.oid); //18
vbCollection.Add(conv4000PSB08VFault.Default.oid); //19
vbCollection.Add(conv4000PSB05VFault.Default.oid); //20
vbCollection.Add(conv4000ConvARFLOFault.Default.oid); //21
vbCollection.Add(conv4000ConvAIFLOFault.Default.oid); //22
vbCollection.Add(conv4000ConvATempFault.Default.oid); //23
vbCollection.Add(conv4000ConvBIFLOFault.Default.oid); //24
vbCollection.Add(conv4000ConvBRFLOFault.Default.oid); //25
vbCollection.Add(conv4000ConvBTempFault.Default.oid); //26
vbCollection.Add(conv4000ExternalRefFault.Default.oid); //27
try
{
var pdu = Pdu.GetPdu(vbCollection);
var param = new AgentParameters(SnmpVersion.Ver2, new OctetString(pdu.Type == PduType.Get ? ReadCommunity : WriteCommunity));
var response = target.Request(pdu, param);
if (!(response is SnmpV2Packet))
{
return(false); // not a valid packet
}
if (response.Pdu.ErrorStatus != 0)
{
return(false); // an error occured
}
_result = (SnmpV2Packet)response;
_logger.WriteMessage("Got results successfully.", DebugLevel.DEBUG);
return(true);
}
catch
{
_logger.WriteMessage("An error occured in GetConfigurationPdu.", DebugLevel.ERROR);
return(false);
}
}
private void RunSetCommands()
{
// This runs all the time and waits for SET requesets to be appended to _commands.
_sender = new BackgroundWorker {
WorkerSupportsCancellation = true, WorkerReportsProgress = true
};
_sender.DoWork += (sender, e) =>
{
_logger.WriteMessage("Sending worker started", DebugLevel.DEBUG);
var worker = sender as BackgroundWorker;
while (!worker.CancellationPending)
{
try
{
using (var target = new UdpTarget(HostName, Port, Timeout, Retry))
{
while (_commands.TryDequeue(out Pdu[] pdus))
{
foreach (var pdu in pdus)
{
try
{
var param = new AgentParameters(SnmpVersion.Ver2, new OctetString(WriteCommunity));
var result = target.Request(pdu, param);
if (result == null)
{
_logger.WriteMessage("Send command result is null", DebugLevel.ERROR);
}
else if (result.Pdu.ErrorStatus != 0)
{
_logger.WriteMessage(String.Format("{0} raised error number: {1} - {2}", result.Pdu.RequestId, result.Pdu.ErrorIndex, ((PduErrorStatus)result.Pdu.ErrorIndex).ToString()), DebugLevel.ERROR);
}
else
{
worker.ReportProgress(0);
}
}
catch (Exception ex)
{
_logger.WriteMessage(ex.Message, DebugLevel.ERROR);
}
}
}
}
}
catch (Exception ex)
{
_logger.WriteMessage(ex.Message, DebugLevel.ERROR);
}
}
};
_sender.RunWorkerAsync();
}
static void remoteCall(string[] args)
{
// SNMP community name
OctetString community = new OctetString("public");
// Define agent parameters class
AgentParameters param = new AgentParameters(community);
// Set SNMP version to 2 (GET-BULK only works with SNMP ver 2 and 3)
param.Version = SnmpVersion.Ver2;
// Construct the agent address object
// IpAddress class is easy to use here because
// it will try to resolve constructor parameter if it doesn't
// parse to an IP address
IpAddress agent = new IpAddress("127.0.0.1");
// Construct target
UdpTarget target = new UdpTarget((IPAddress)agent, 161, 2000, 1);
// Define Oid that is the root of the MIB
// tree you wish to retrieve
Oid rootOid = new Oid("1.3.6.1.2.1.2.2.1.2"); // ifDescr
// This Oid represents last Oid returned by
// the SNMP agent
Oid lastOid = (Oid)rootOid.Clone();
// Pdu class used for all requests
Pdu pdu = new Pdu(PduType.GetBulk);
// In this example, set NonRepeaters value to 0
pdu.NonRepeaters = 0;
// MaxRepetitions tells the agent how many Oid/Value pairs to return
// in the response.
pdu.MaxRepetitions = 5;
// Loop through results
while (lastOid != null)
{
// When Pdu class is first constructed, RequestId is set to 0
// and during encoding id will be set to the random value
// for subsequent requests, id will be set to a value that
// needs to be incremented to have unique request ids for each
// packet
if (pdu.RequestId != 0)
{
pdu.RequestId += 1;
}
// Clear Oids from the Pdu class.
pdu.VbList.Clear();
// Initialize request PDU with the last retrieved Oid
pdu.VbList.Add(lastOid);
// Make SNMP request
SnmpV2Packet result = (SnmpV2Packet)target.Request(pdu, param);
// You should catch exceptions in the Request if using in real application.
// If result is null then agent didn't reply or we couldn't parse the reply.
if (result != null)
{
// ErrorStatus other then 0 is an error returned by
// the Agent - see SnmpConstants for error definitions
if (result.Pdu.ErrorStatus != 0)
{
// agent reported an error with the request
Console.WriteLine("Error in SNMP reply. Error {0} index {1}",
result.Pdu.ErrorStatus,
result.Pdu.ErrorIndex);
lastOid = null;
break;
}
else
{
// Walk through returned variable bindings
foreach (Vb v in result.Pdu.VbList)
{
// Check that retrieved Oid is "child" of the root OID
if (rootOid.IsRootOf(v.Oid))
{
Console.WriteLine("{0} ({1}): {2}",
v.Oid.ToString(),
SnmpConstants.GetTypeName(v.Value.Type),
v.Value.ToString());
if (v.Value.Type == SnmpConstants.SMI_ENDOFMIBVIEW)
lastOid = null;
else
lastOid = v.Oid;
}
else
{
// we have reached the end of the requested
// MIB tree. Set lastOid to null and exit loop
lastOid = null;
}
}
}
}
else
{
Console.WriteLine("No response received from SNMP agent.");
}
}
target.Close();
}
