// TRAP message PDU (SNMP version 2 and above).// Copyright (C) 2008-2010 Malcolm Crowe, Lex Li, and other contributors.// // Permission is hereby granted, free of charge, to any person obtaining a copy of this// software and associated documentation files (the "Software"), to deal in the Software// without restriction, including without limitation the rights to use, copy, modify, merge,// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons// to whom the Software is furnished to do so, subject to the following conditions:// // The above copyright notice and this permission notice shall be included in all copies or// substantial portions of the Software.// // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER// DEALINGS IN THE SOFTWARE. using System;using System.Collections.Generic;using System.Globalization;using System.IO; namespace GSF.Net.Snmp{    /// <summary>    /// TRAP v2 PDU.    /// </summary>    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", MessageId = "Pdu")]    public sealed class TrapV2Pdu : ISnmpPdu    {        private readonly uint[] _timeId = new uint[] { 1, 3, 6, 1, 2, 1, 1, 3, 0 };        private readonly uint[] _enterpriseId = new uint[] { 1, 3, 6, 1, 6, 3, 1, 1, 4, 1, 0 };        private readonly Sequence _varbindSection;        private readonly TimeTicks _time;        private readonly byte[] _length;        private byte[] _raw;         /// <summary>        /// Creates a <see cref="TrapV2Pdu"/> instance with all content.        /// </summary>        /// <param name="requestId">Request ID.</param>        /// <param name="enterprise">Enterprise.</param>        /// <param name="time">Time stamp.</param>        /// <param name="variables">Variables.</param>        [CLSCompliant(false)]        public TrapV2Pdu(int requestId, ObjectIdentifier enterprise, uint time, IList<Variable> variables)        {            if (enterprise == null)            {                throw new ArgumentNullException(nameof(enterprise));            }             if (variables == null)            {                throw new ArgumentNullException(nameof(variables));            }             Enterprise = enterprise;            RequestId = new Integer32(requestId);            _time = new TimeTicks(time);            Variables = variables;            IList<Variable> full = new List<Variable>(variables);            full.Insert(0, new Variable(_timeId, _time));            full.Insert(1, new Variable(_enterpriseId, Enterprise));            _varbindSection = Variable.Transform(full);        }         /// <summary>        /// Initializes a new instance of the <see cref="TrapV2Pdu"/> class.        /// </summary>        /// <param name="length">The length data.</param>        /// <param name="stream">The stream.</param>        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1804:RemoveUnusedLocals", MessageId = "temp2")]        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Performance", "CA1804:RemoveUnusedLocals", MessageId = "temp1")]        public TrapV2Pdu(Tuple<int, byte[]> length, Stream stream)        {            if (length == null)            {                throw new ArgumentNullException(nameof(length));            }             if (stream == null)            {                throw new ArgumentNullException(nameof(stream));            }                        RequestId = (Integer32)DataFactory.CreateSnmpData(stream); // request#pragma warning disable 168            Integer32 temp1 = (Integer32)DataFactory.CreateSnmpData(stream); // 0            Integer32 temp2 = (Integer32)DataFactory.CreateSnmpData(stream); // 0#pragma warning restore 168            _varbindSection = (Sequence)DataFactory.CreateSnmpData(stream);            Variables = Variable.Transform(_varbindSection); // v[0] is timestamp. v[1] oid, v[2] value.            _time = (TimeTicks)Variables[0].Data;            Variables.RemoveAt(0);            Enterprise = (ObjectIdentifier)Variables[0].Data;            Variables.RemoveAt(0);            _length = length.Item2;        }         #region ISnmpPdu Members         /// <summary>        /// Variables.        /// </summary>        public IList<Variable> Variables { get; private set; }         /// <summary>        /// Gets the request ID.        /// </summary>        /// <value>The request ID.</value>        public Integer32 RequestId { get; private set; }         /// <summary>        /// Gets the error status.        /// </summary>        /// <value>The error status.</value>        public Integer32 ErrorStatus        {            get { throw new NotSupportedException(); }        }         /// <summary>        /// Gets the index of the error.        /// </summary>        /// <value>The index of the error.</value>        public Integer32 ErrorIndex        {            get { throw new NotSupportedException(); }        }         #endregion         #region ISnmpData Members        /// <summary>        /// Type code.        /// </summary>        public SnmpType TypeCode        {            get { return SnmpType.TrapV2Pdu; }        }                /// <summary>        /// Appends the bytes to <see cref="Stream"/>.        /// </summary>        /// <param name="stream">The stream.</param>        public void AppendBytesTo(Stream stream)        {            if (stream == null)            {                throw new ArgumentNullException(nameof(stream));            }                        if (_raw == null)            {                _raw = ByteTool.ParseItems(RequestId, Integer32.Zero, Integer32.Zero, _varbindSection);            }             stream.AppendBytes(TypeCode, _length, _raw);        }         #endregion         /// <summary>        /// Enterprise.        /// </summary>        public ObjectIdentifier Enterprise { get; private set; }         /// <summary>        /// Time stamp.        /// </summary>        [CLSCompliant(false)]        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Naming", "CA1702:CompoundWordsShouldBeCasedCorrectly", MessageId = "TimeStamp")]        public uint TimeStamp        {            get { return _time.ToUInt32(); }        }         /// <summary>        /// Returns a <see cref="string"/> that represents this <see cref="TrapV2Pdu"/>.        /// </summary>        /// <returns></returns>        public override string ToString()        {            return string.Format(                CultureInfo.InvariantCulture,                "TRAP v2 PDU: request ID: {3}; enterprise: {0}; time stamp: {1}; variable count: {2}",                Enterprise,                 _time,                 Variables.Count.ToString(CultureInfo.InvariantCulture),                RequestId);        }    }}