571 lines
14 KiB
C#
571 lines
14 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Net;
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using System.Net.Sockets;
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using Aitex.Core.RT.Log;
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using SnmpSharpNet;
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namespace MECF.Framework.Common.Communications
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{
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public class SNMPFactory : IDisposable
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{
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public string _address;
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public string _community;
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public int _versionNo;
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public UdpTarget target;
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public AgentParameters param;
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public bool EnableLog { get; set; }
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public string Address
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{
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get
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{
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return _address;
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}
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set
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{
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_address = value;
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}
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}
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public event Action<string, string> OnErrorHappened;
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public event Action<Dictionary<string, string>> OnDataDicChanged;
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public event Action<string, string> OnDataChanged;
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public event Action<string> OnDataWriteChanged;
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public event Action<TrapInfo> OnTrapChanged;
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public SNMPFactory(string address, string community, int VersionNo, string newline = "\r", bool isAsciiMode = true)
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{
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_address = address;
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_community = community;
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_versionNo = VersionNo;
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OctetString community2 = new OctetString(community);
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param = new AgentParameters(community2);
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param.Version = (SnmpVersion)_versionNo;
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IpAddress ipAddress = new IpAddress(Address);
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target = new UdpTarget((IPAddress)ipAddress, 161, 2000, 1);
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}
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public void Dispose()
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{
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Close();
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}
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public bool Open()
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{
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if (target != null)
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{
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Close();
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}
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try
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{
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IpAddress ipAddress = new IpAddress(Address);
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target = new UdpTarget((IPAddress)ipAddress, 161, 2000, 1);
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}
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catch (Exception ex)
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{
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string message = Address + "open failed，please check configuration." + ex.Message;
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LOG.Write(message);
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return false;
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}
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return true;
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}
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public bool IsOpen()
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{
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return target != null;
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}
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public bool Close()
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{
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if (target != null)
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{
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try
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{
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target.Close();
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target.Dispose();
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}
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catch (Exception ex)
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{
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string message = Address + "close failed." + ex.Message;
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LOG.Write(message);
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return false;
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}
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}
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return true;
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}
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public bool SnmpGet(string oIds)
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{
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try
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{
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Pdu pdu = new Pdu(PduType.Get);
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pdu.VbList.Add(oIds);
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if (_versionNo == 0)
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{
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SnmpV1Packet snmpV1Packet = (SnmpV1Packet)target.Request(pdu, param);
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if (EnableLog)
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{
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LOG.Info($"Communication {Address} Send {oIds}.", isTraceOn: false);
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}
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if (snmpV1Packet != null)
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{
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Dictionary<string, string> dictionary = new Dictionary<string, string>();
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if (snmpV1Packet.Pdu.ErrorStatus != 0)
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{
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if (this.OnErrorHappened != null)
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{
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this.OnErrorHappened(snmpV1Packet.Pdu.ErrorStatus.ToString(), snmpV1Packet.Pdu.ErrorStatus.ToString());
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}
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}
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else
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{
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string text = null;
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foreach (Vb vb in snmpV1Packet.Pdu.VbList)
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{
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if (this.OnDataChanged != null)
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{
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dictionary.Add(vb.Oid.ToString(), vb.Value.ToString());
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if (EnableLog)
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{
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text = text + vb.Oid.ToString() + "(" + vb.Value.ToString() + ")\r\n";
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}
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}
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}
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if (EnableLog)
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{
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LOG.Info($"Communication {Address} Receive {text}.", isTraceOn: false);
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}
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this.OnDataDicChanged(dictionary);
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}
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return true;
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}
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}
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else if (_versionNo == 1)
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{
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SnmpV2Packet snmpV2Packet = (SnmpV2Packet)target.Request(pdu, param);
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if (EnableLog)
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{
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LOG.Info($"Communication {Address} Send {oIds}.", isTraceOn: false);
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}
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if (snmpV2Packet != null)
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{
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Dictionary<string, string> dictionary2 = new Dictionary<string, string>();
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if (snmpV2Packet.Pdu.ErrorStatus != 0)
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{
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string text2 = null;
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if (this.OnErrorHappened != null)
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{
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this.OnErrorHappened(snmpV2Packet.Pdu.ErrorStatus.ToString(), snmpV2Packet.Pdu.ErrorStatus.ToString());
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}
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if (EnableLog)
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{
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LOG.Info($"Communication {Address} Receive {snmpV2Packet.Pdu.VbList.FirstOrDefault().Oid}({snmpV2Packet.Pdu.VbList.FirstOrDefault().Value}):ErrorStatus({snmpV2Packet.Pdu.ErrorStatus.ToString()}).", isTraceOn: false);
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}
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this.OnDataDicChanged(dictionary2);
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}
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else
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{
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string text3 = null;
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foreach (Vb vb2 in snmpV2Packet.Pdu.VbList)
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{
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if (this.OnDataChanged != null)
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{
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dictionary2.Add(vb2.Oid.ToString(), vb2.Value.ToString());
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}
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if (EnableLog)
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{
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text3 = text3 + vb2.Oid.ToString() + "(" + vb2.Value.ToString() + ")\r\n";
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}
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}
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if (EnableLog)
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{
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LOG.Info($"Communication {Address} Receive {text3}.", isTraceOn: false);
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}
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this.OnDataDicChanged(dictionary2);
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}
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return true;
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}
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}
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}
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catch (Exception ex)
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{
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string text4 = ex.ToString();
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return false;
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}
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return false;
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}
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public bool SnmpGetNext(string oIds)
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{
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try
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{
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Pdu pdu = new Pdu(PduType.GetNext);
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pdu.VbList.Add(oIds);
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if (_versionNo == 0)
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{
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SnmpV1Packet snmpV1Packet = (SnmpV1Packet)target.Request(pdu, param);
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if (EnableLog)
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{
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LOG.Info($"Communication {Address} Send {oIds}.", isTraceOn: false);
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}
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if (snmpV1Packet != null)
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{
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Dictionary<string, string> dictionary = new Dictionary<string, string>();
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if (snmpV1Packet.Pdu.ErrorStatus != 0)
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{
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if (this.OnErrorHappened != null)
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{
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this.OnErrorHappened(snmpV1Packet.Pdu.ErrorStatus.ToString(), snmpV1Packet.Pdu.ErrorStatus.ToString());
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}
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}
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else
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{
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string text = null;
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foreach (Vb vb in snmpV1Packet.Pdu.VbList)
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{
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if (this.OnDataChanged != null)
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{
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dictionary.Add(vb.Oid.ToString(), vb.Value.ToString());
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if (EnableLog)
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{
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text = text + vb.Oid.ToString() + "(" + vb.Value.ToString() + ")\r\n";
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}
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}
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}
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if (EnableLog)
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{
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LOG.Info($"Communication {Address} Receive {text}.", isTraceOn: false);
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}
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this.OnDataDicChanged(dictionary);
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}
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return true;
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}
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}
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else if (_versionNo == 1)
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{
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SnmpV2Packet snmpV2Packet = (SnmpV2Packet)target.Request(pdu, param);
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if (EnableLog)
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{
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LOG.Info($"Communication {Address} Send {oIds}.", isTraceOn: false);
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}
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if (snmpV2Packet != null)
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{
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Dictionary<string, string> dictionary2 = new Dictionary<string, string>();
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if (snmpV2Packet.Pdu.ErrorStatus != 0)
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{
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string text2 = null;
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if (this.OnErrorHappened != null)
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{
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this.OnErrorHappened(snmpV2Packet.Pdu.ErrorStatus.ToString(), snmpV2Packet.Pdu.ErrorStatus.ToString());
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}
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if (EnableLog)
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{
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LOG.Info($"Communication {Address} Receive {snmpV2Packet.Pdu.VbList.FirstOrDefault().Oid}({snmpV2Packet.Pdu.VbList.FirstOrDefault().Value}):ErrorStatus({snmpV2Packet.Pdu.ErrorStatus.ToString()}).", isTraceOn: false);
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}
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this.OnDataDicChanged(dictionary2);
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}
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else
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{
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string text3 = null;
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foreach (Vb vb2 in snmpV2Packet.Pdu.VbList)
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{
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if (this.OnDataChanged != null)
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{
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dictionary2.Add(vb2.Oid.ToString(), vb2.Value.ToString());
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}
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if (EnableLog)
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{
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text3 = text3 + vb2.Oid.ToString() + "(" + vb2.Value.ToString() + ")\r\n";
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}
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}
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if (EnableLog)
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{
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LOG.Info($"Communication {Address} Receive {text3}.", isTraceOn: false);
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}
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this.OnDataDicChanged(dictionary2);
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}
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return true;
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}
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}
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}
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catch (Exception ex)
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{
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string text4 = ex.ToString();
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return false;
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}
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return false;
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}
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public bool SnmpGetList(List<string> oIds)
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{
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try
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{
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Pdu pdu = new Pdu(PduType.Get);
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foreach (string oId in oIds)
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{
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pdu.VbList.Add(oId);
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}
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if (_versionNo == 0)
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{
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SnmpV1Packet snmpV1Packet = (SnmpV1Packet)target.Request(pdu, param);
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if (snmpV1Packet != null)
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{
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Dictionary<string, string> dictionary = new Dictionary<string, string>();
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if (snmpV1Packet.Pdu.ErrorStatus != 0)
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{
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if (this.OnErrorHappened != null)
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{
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this.OnErrorHappened(snmpV1Packet.Pdu.ErrorStatus.ToString(), snmpV1Packet.Pdu.ErrorStatus.ToString());
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}
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}
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else
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{
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foreach (Vb vb in snmpV1Packet.Pdu.VbList)
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{
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dictionary.Add(vb.Oid.ToString(), vb.Value.ToString());
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}
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if (this.OnDataDicChanged != null)
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{
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this.OnDataDicChanged(dictionary);
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}
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}
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return true;
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}
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}
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else if (_versionNo == 1)
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{
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SnmpV2Packet snmpV2Packet = (SnmpV2Packet)target.Request(pdu, param);
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if (snmpV2Packet != null)
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{
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Dictionary<string, string> dictionary2 = new Dictionary<string, string>();
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if (snmpV2Packet.Pdu.ErrorStatus != 0)
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{
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if (this.OnErrorHappened != null)
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{
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this.OnErrorHappened(snmpV2Packet.Pdu.ErrorStatus.ToString(), snmpV2Packet.Pdu.ErrorStatus.ToString());
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}
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}
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else
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{
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foreach (Vb vb2 in snmpV2Packet.Pdu.VbList)
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{
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dictionary2.Add(vb2.Oid.ToString(), vb2.Value.ToString());
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}
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if (this.OnDataDicChanged != null)
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{
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this.OnDataDicChanged(dictionary2);
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}
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}
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return true;
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}
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}
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}
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catch
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{
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return false;
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}
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return false;
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}
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public bool SnmpWalk(string oIds)
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{
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try
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{
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Oid oid = new Oid(oIds);
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Oid oid2 = (Oid)oid.Clone();
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Pdu pdu = new Pdu(PduType.GetBulk);
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pdu.NonRepeaters = 0;
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pdu.MaxRepetitions = 5;
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while (oid2 != null)
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{
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if (pdu.RequestId != 0)
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{
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pdu.RequestId++;
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}
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pdu.VbList.Clear();
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pdu.VbList.Add(oid2);
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SnmpV2Packet snmpV2Packet = (SnmpV2Packet)target.Request(pdu, param);
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if (EnableLog)
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{
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LOG.Info($"Communication {Address} Send {oIds}.", isTraceOn: false);
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}
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if (snmpV2Packet == null)
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{
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continue;
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}
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Dictionary<string, string> dictionary = new Dictionary<string, string>();
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if (snmpV2Packet.Pdu.ErrorStatus != 0)
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{
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if (this.OnErrorHappened != null)
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{
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this.OnErrorHappened(snmpV2Packet.Pdu.ErrorStatus.ToString(), snmpV2Packet.Pdu.ErrorStatus.ToString());
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}
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oid2 = null;
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if (EnableLog)
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{
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LOG.Info($"Communication {Address} Receive {snmpV2Packet.Pdu.VbList.FirstOrDefault().Oid}({snmpV2Packet.Pdu.VbList.FirstOrDefault().Value}):ErrorStatus({snmpV2Packet.Pdu.ErrorStatus.ToString()}).", isTraceOn: false);
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}
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this.OnDataDicChanged(dictionary);
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break;
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}
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string text = null;
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foreach (Vb vb in snmpV2Packet.Pdu.VbList)
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{
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if (oid.IsRootOf(vb.Oid))
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{
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if (!dictionary.ContainsKey(vb.Oid.ToString()))
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{
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dictionary.Add(vb.Oid.ToString(), vb.Value.ToString());
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if (EnableLog)
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{
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text = text + vb.Oid.ToString() + "(" + vb.Value.ToString() + ")\r\n";
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}
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}
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oid2 = vb.Oid;
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}
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else
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{
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oid2 = null;
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}
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}
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if (this.OnDataDicChanged != null)
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{
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this.OnDataDicChanged(dictionary);
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}
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if (EnableLog)
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{
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LOG.Info($"Communication {Address} Receive {text}.", isTraceOn: false);
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}
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return true;
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}
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}
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catch (Exception ex)
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{
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string text2 = ex.ToString();
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return false;
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}
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return false;
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}
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public bool SnmpSet(string oids, string type, string value)
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{
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Pdu pdu = new Pdu(PduType.Set);
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if (type == "Integer")
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{
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int val = Convert.ToInt32(value);
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pdu.VbList.Add(new Oid(oids), new Integer32(val));
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}
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else if (type == "UInteger")
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{
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uint val2 = Convert.ToUInt32(value);
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pdu.VbList.Add(new Oid(oids), new UInteger32(val2));
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}
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SnmpV2Packet snmpV2Packet;
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try
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{
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snmpV2Packet = target.Request(pdu, param) as SnmpV2Packet;
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}
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catch (Exception ex)
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{
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Console.WriteLine($"Request failed with exception: {ex.Message}");
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target.Close();
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return false;
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}
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if (snmpV2Packet == null)
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{
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if (this.OnErrorHappened != null)
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{
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this.OnErrorHappened(snmpV2Packet.Pdu.ErrorStatus.ToString(), snmpV2Packet.Pdu.ErrorStatus.ToString());
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}
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return false;
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}
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if (snmpV2Packet.Pdu.ErrorStatus != 0)
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{
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if (this.OnErrorHappened != null)
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{
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this.OnErrorHappened(snmpV2Packet.Pdu.ErrorStatus.ToString(), snmpV2Packet.Pdu.ErrorStatus.ToString());
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}
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}
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else
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{
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this.OnDataWriteChanged($"Set OID{oids}:Value{value} succeed");
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}
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return true;
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}
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public void GetTrap()
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{
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Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
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IPEndPoint iPEndPoint = new IPEndPoint(IPAddress.Any, 162);
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EndPoint localEP = iPEndPoint;
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socket.Bind(localEP);
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socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveTimeout, 0);
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bool flag = true;
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int num = -1;
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while (flag)
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{
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byte[] buffer = new byte[16384];
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IPEndPoint iPEndPoint2 = new IPEndPoint(IPAddress.Any, 0);
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EndPoint remoteEP = iPEndPoint2;
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try
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{
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num = socket.ReceiveFrom(buffer, ref remoteEP);
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}
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catch (Exception ex)
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{
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Console.WriteLine("Exception {0}", ex.Message);
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num = -1;
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}
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if (num <= 0)
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{
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continue;
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}
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TrapInfo trapInfo = new TrapInfo();
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if (SnmpPacket.GetProtocolVersion(buffer, num) == 0)
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{
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SnmpV1TrapPacket snmpV1TrapPacket = new SnmpV1TrapPacket();
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snmpV1TrapPacket.decode(buffer, num);
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foreach (Vb vb in snmpV1TrapPacket.Pdu.VbList)
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{
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trapInfo.OID = vb.Oid.ToString();
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trapInfo.ValueType = SnmpConstants.GetTypeName(vb.Value.Type);
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trapInfo.Value = vb.Value.ToString();
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if (this.OnTrapChanged != null)
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{
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this.OnTrapChanged(trapInfo);
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}
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}
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continue;
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}
|
||
SnmpV2Packet snmpV2Packet = new SnmpV2Packet();
|
||
snmpV2Packet.decode(buffer, num);
|
||
if (snmpV2Packet.Pdu.Type != PduType.V2Trap)
|
||
{
|
||
continue;
|
||
}
|
||
foreach (Vb vb2 in snmpV2Packet.Pdu.VbList)
|
||
{
|
||
trapInfo.OID = vb2.Oid.ToString();
|
||
trapInfo.ValueType = SnmpConstants.GetTypeName(vb2.Value.Type);
|
||
trapInfo.Value = vb2.Value.ToString();
|
||
if (this.OnTrapChanged != null)
|
||
{
|
||
this.OnTrapChanged(trapInfo);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|