etwen
7b8f04e1dd
- Add TeraTerm-compatible sprintf2 (C printf formatting into a string var) - Fix SVOS power-cycle script racing ahead by gating prompt waits behind output-completion markers - Bump version to 0.1.2; docs and README updates
77 lines
3.1 KiB
C#
77 lines
3.1 KiB
C#
using System.Net;
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using ETTerms.Infrastructure;
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using SnmpSharpNet;
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namespace ETTerms.Scripting.Pdu;
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/// <summary>
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/// PDU Controller for iPoMan II/III models via SNMP.
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/// Ported from MyTeraTerm's PDUControlLib.
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/// </summary>
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public sealed class PduController : IDisposable
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{
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private readonly string _ip;
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private const string Community = "private";
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private const int SnmpPort = 161;
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private const int Timeout = 3000;
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public PduController(string ip) => _ip = ip;
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public bool CheckConnection()
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{
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var name = SnmpGet(".1.3.6.1.4.1.2468.1.4.2.1.1.4");
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AppLogger.Info($"[PDU] CheckConnection {_ip}: name='{name ?? "<null>"}'");
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return !string.IsNullOrEmpty(name) && name.Contains("PDU");
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}
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public bool SetPortOn(int port) => SnmpSet(PortControlOid(port), new Integer32(3));
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public bool SetPortOff(int port) => SnmpSet(PortControlOid(port), new Integer32(4));
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public bool? GetPortState(int port)
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{
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var r = SnmpGet(PortStateOid(port));
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return r == "3" ? true : (r == "2" || r == "4") ? false : null;
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}
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public int? GetPortCurrent(int port) => int.TryParse(SnmpGet(PortCurrentOid(port)), out int v) ? v : null;
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public double? GetPortPowerWatts(int port) => int.TryParse(SnmpGet(PortPowerOid(port)), out int v) ? v / 10.0 : null;
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private static string PortControlOid(int port) => $".1.3.6.1.4.1.2468.1.4.2.1.3.2.4.1.2.{port}";
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private static string PortStateOid(int port) => $".1.3.6.1.4.1.2468.1.4.2.1.3.2.3.1.2.{port}";
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private static string PortCurrentOid(int port) => $".1.3.6.1.4.1.2468.1.4.2.1.3.2.3.1.3.{port}";
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private static string PortPowerOid(int port) => $".1.3.6.1.4.1.2468.1.4.2.1.3.2.3.1.5.{port}";
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private bool SnmpSet(string oid, AsnType value)
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{
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try
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{
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var param = new AgentParameters(new OctetString(Community)) { Version = SnmpVersion.Ver1 };
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using var target = new UdpTarget((IPAddress)new IpAddress(_ip), SnmpPort, Timeout, 1);
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var pdu = new SnmpSharpNet.Pdu(PduType.Set);
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pdu.VbList.Add(new Oid(oid), value);
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var result = (SnmpV1Packet)target.Request(pdu, param);
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return result?.Pdu.ErrorStatus == 0;
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}
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catch { return false; }
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}
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private string? SnmpGet(string oid)
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{
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try
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{
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var param = new AgentParameters(new OctetString(Community)) { Version = SnmpVersion.Ver1 };
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using var target = new UdpTarget((IPAddress)new IpAddress(_ip), SnmpPort, Timeout, 1);
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var pdu = new SnmpSharpNet.Pdu(PduType.Get);
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pdu.VbList.Add(new Oid(oid));
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var result = (SnmpV1Packet)target.Request(pdu, param);
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if (result == null) { AppLogger.LogWarning($"[PDU] SNMP GET {oid}: no response (timeout)"); return null; }
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if (result.Pdu.ErrorStatus != 0) { AppLogger.LogWarning($"[PDU] SNMP GET {oid}: ErrorStatus={result.Pdu.ErrorStatus}"); return null; }
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foreach (var v in result.Pdu.VbList) return v.Value.ToString();
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}
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catch (Exception ex) { AppLogger.LogError($"[PDU] SNMP GET {oid} exception", ex); }
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return null;
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}
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public void Dispose() { }
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}
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