/// <summary> /// Sets a list of variable binds. /// </summary> /// <param name="version">Protocol version.</param> /// <param name="endpoint">Endpoint.</param> /// <param name="community">Community name.</param> /// <param name="variables">Variable binds.</param> /// <param name="timeout">The time-out value, in milliseconds. The default value is 0, which indicates an infinite time-out period. Specifying -1 also indicates an infinite time-out period.</param> /// <returns></returns> public static IList <Variable> Set(VersionCode version, IPEndPoint endpoint, OctetString community, IList <Variable> variables, int timeout) { if (endpoint == null) { throw new ArgumentNullException("endpoint"); } if (community == null) { throw new ArgumentNullException("community"); } if (variables == null) { throw new ArgumentNullException("variables"); } if (version == VersionCode.V3) { throw new NotSupportedException("SNMP v3 is not supported"); } var message = new SetRequestMessage(RequestCounter.NextId, version, community, variables); var response = message.GetResponse(timeout, endpoint); var pdu = response.Pdu(); if (pdu.ErrorStatus.ToInt32() != 0) { throw ErrorException.Create("error in response", endpoint.Address, response); } return(pdu.Variables); }
/// <summary> /// Sets a list of variable binds. /// </summary> /// <param name="version">Protocol version.</param> /// <param name="endpoint">Endpoint.</param> /// <param name="community">Community name.</param> /// <param name="variables">Variable binds.</param> /// <returns></returns> public static async Task <IList <Variable> > SetAsync(VersionCode version, IPEndPoint endpoint, OctetString community, IList <Variable> variables) { if (endpoint == null) { throw new ArgumentNullException(nameof(endpoint)); } if (community == null) { throw new ArgumentNullException(nameof(community)); } if (variables == null) { throw new ArgumentNullException(nameof(variables)); } if (version == VersionCode.V3) { throw new NotSupportedException("SNMP v3 is not supported"); } var message = new SetRequestMessage(RequestCounter.NextId, version, community, variables); var response = await message.GetResponseAsync(endpoint).ConfigureAwait(false); var pdu = response.Pdu(); if (pdu.ErrorStatus.ToInt32() != 0) { throw ErrorException.Create( "error in response", endpoint.Address, response); } return(pdu.Variables); }
/// <summary> /// Sets a list of variable binds. /// </summary> /// <param name="version">Protocol version.</param> /// <param name="endpoint">Endpoint.</param> /// <param name="community">Community name.</param> /// <param name="variables">Variable binds.</param> /// <param name="timeout">The time-out value, in milliseconds. The default value is 0, which indicates an infinite time-out period. Specifying -1 also indicates an infinite time-out period.</param> /// <returns></returns> public static IList<Variable> Set(VersionCode version, IPEndPoint endpoint, OctetString community, IList<Variable> variables, int timeout) { if (endpoint == null) { throw new ArgumentNullException("endpoint"); } if (community == null) { throw new ArgumentNullException("community"); } if (variables == null) { throw new ArgumentNullException("variables"); } if (version == VersionCode.V3) { throw new NotSupportedException("SNMP v3 is not supported"); } var message = new SetRequestMessage(RequestCounter.NextId, version, community, variables); var response = message.GetResponse(timeout, endpoint); var pdu = response.Pdu(); if (pdu.ErrorStatus.ToInt32() != 0) { throw ErrorException.Create( "error in response", endpoint.Address, response); } return pdu.Variables; }
static void Main(string[] args) { string community = "public"; bool showHelp = false; bool showVersion = false; VersionCode version = VersionCode.V1; int timeout = 1000; int retry = 0; Levels level = Levels.Reportable; string user = string.Empty; string authentication = string.Empty; string authPhrase = string.Empty; string privacy = string.Empty; string privPhrase = string.Empty; bool dump = false; OptionSet p = new OptionSet() .Add("c:", "Community name, (default is public)", delegate(string v) { if (v != null) community = v; }) .Add("l:", "Security level, (default is noAuthNoPriv)", delegate(string v) { if (v.ToUpperInvariant() == "NOAUTHNOPRIV") { level = Levels.Reportable; } else if (v.ToUpperInvariant() == "AUTHNOPRIV") { level = Levels.Authentication | Levels.Reportable; } else if (v.ToUpperInvariant() == "AUTHPRIV") { level = Levels.Authentication | Levels.Privacy | Levels.Reportable; } else { throw new ArgumentException("no such security mode: " + v); } }) .Add("a:", "Authentication method (MD5 or SHA)", delegate(string v) { authentication = v; }) .Add("A:", "Authentication passphrase", delegate(string v) { authPhrase = v; }) .Add("x:", "Privacy method", delegate(string v) { privacy = v; }) .Add("X:", "Privacy passphrase", delegate(string v) { privPhrase = v; }) .Add("u:", "Security name", delegate(string v) { user = v; }) .Add("h|?|help", "Print this help information.", delegate(string v) { showHelp = v != null; }) .Add("V", "Display version number of this application.", delegate(string v) { showVersion = v != null; }) .Add("d", "Display message dump", delegate(string v) { dump = true; }) .Add("t:", "Timeout value (unit is second).", delegate(string v) { timeout = int.Parse(v) * 1000; }) .Add("r:", "Retry count (default is 0)", delegate(string v) { retry = int.Parse(v); }) .Add("v:", "SNMP version (1, 2, and 3 are currently supported)", delegate(string v) { switch (int.Parse(v)) { case 1: version = VersionCode.V1; break; case 2: version = VersionCode.V2; break; case 3: version = VersionCode.V3; break; default: throw new ArgumentException("no such version: " + v); } }); if (args.Length == 0) { ShowHelp(p); return; } List<string> extra; try { extra = p.Parse(args); } catch (OptionException ex) { Console.WriteLine(ex.Message); return; } if (showHelp) { ShowHelp(p); return; } if ((extra.Count - 1) % 3 != 0) { Console.WriteLine("invalid variable number: " + extra.Count); return; } if (showVersion) { Console.WriteLine(System.Reflection.Assembly.GetExecutingAssembly().GetName().Version); return; } IPAddress ip; bool parsed = IPAddress.TryParse(extra[0], out ip); if (!parsed) { foreach (IPAddress address in Dns.GetHostAddresses(extra[0]).Where(address => address.AddressFamily == AddressFamily.InterNetwork)) { ip = address; break; } if (ip == null) { Console.WriteLine("invalid host or wrong IP address found: " + extra[0]); return; } } try { List<Variable> vList = new List<Variable>(); for (int i = 1; i < extra.Count; i = i + 3) { string type = extra[i + 1]; if (type.Length != 1) { Console.WriteLine("invalid type string: " + type); return; } ISnmpData data; switch (type[0]) { case 'i': data = new Integer32(int.Parse(extra[i + 2])); break; case 'u': data = new Gauge32(uint.Parse(extra[i + 2])); break; case 't': data = new TimeTicks(uint.Parse(extra[i + 2])); break; case 'a': data = new IP(IPAddress.Parse(extra[i + 2]).GetAddressBytes()); break; case 'o': data = new ObjectIdentifier(extra[i + 2]); break; case 'x': data = new OctetString(ByteTool.Convert(extra[i + 2])); break; case 's': data = new OctetString(extra[i + 2]); break; case 'd': data = new OctetString(ByteTool.ConvertDecimal(extra[i + 2])); break; case 'n': data = new Null(); break; default: Console.WriteLine("unknown type string: " + type[0]); return; } Variable test = new Variable(new ObjectIdentifier(extra[i]), data); vList.Add(test); } IPEndPoint receiver = new IPEndPoint(ip, 161); if (version != VersionCode.V3) { foreach (Variable variable in Messenger.Set(version, receiver, new OctetString(community), vList, timeout)) { Console.WriteLine(variable); } return; } if (string.IsNullOrEmpty(user)) { Console.WriteLine("User name need to be specified for v3."); return; } IAuthenticationProvider auth = (level & Levels.Authentication) == Levels.Authentication ? GetAuthenticationProviderByName(authentication, authPhrase) : DefaultAuthenticationProvider.Instance; IPrivacyProvider priv; if ((level & Levels.Privacy) == Levels.Privacy) { priv = new DESPrivacyProvider(new OctetString(privPhrase), auth); } else { priv = new DefaultPrivacyProvider(auth); } Discovery discovery = Messenger.GetNextDiscovery(SnmpType.SetRequestPdu); ReportMessage report = discovery.GetResponse(timeout, receiver); SetRequestMessage request = new SetRequestMessage(VersionCode.V3, Messenger.NextMessageId, Messenger.NextRequestId, new OctetString(user), vList, priv, Messenger.MaxMessageSize, report); ISnmpMessage reply = request.GetResponse(timeout, receiver); if (dump) { Console.WriteLine("Request message bytes:"); Console.WriteLine(ByteTool.Convert(request.ToBytes())); Console.WriteLine("Response message bytes:"); Console.WriteLine(ByteTool.Convert(reply.ToBytes())); } if (reply is ReportMessage) { if (reply.Pdu().Variables.Count == 0) { Console.WriteLine("wrong report message received"); return; } var id = reply.Pdu().Variables[0].Id; if (id != Messenger.NotInTimeWindow) { var error = id.GetErrorMessage(); Console.WriteLine(error); return; } // according to RFC 3414, send a second request to sync time. request = new SetRequestMessage(VersionCode.V3, Messenger.NextMessageId, Messenger.NextRequestId, new OctetString(user), vList, priv, Messenger.MaxMessageSize, reply); reply = request.GetResponse(timeout, receiver); } else if (reply.Pdu().ErrorStatus.ToInt32() != 0) // != ErrorCode.NoError { throw ErrorException.Create( "error in response", receiver.Address, reply); } foreach (Variable v in reply.Pdu().Variables) { Console.WriteLine(v); } } catch (SnmpException ex) { Console.WriteLine(ex); } catch (SocketException ex) { Console.WriteLine(ex); } }
internal override void Set(Variable variable) { if (string.IsNullOrEmpty(UserName)) { Logger.Info("User name need to be specified for v3."); return; } Discovery discovery = Messenger.NextDiscovery; ReportMessage report = discovery.GetResponse(Timeout, Agent); SetRequestMessage request = new SetRequestMessage(VersionCode.V3, Messenger.NextMessageId, Messenger.NextRequestId, new OctetString(UserName), new List<Variable> { variable }, _privacy, Messenger.MaxMessageSize, report); ISnmpMessage response = request.GetResponse(Timeout, Agent); if (response.Pdu.ErrorStatus.ToInt32() != 0) { throw ErrorException.Create( "error in response", Agent.Address, response); } Logger.Info(response.Pdu.Variables[0].ToString(Objects)); }