/* Copyright (c) 2017 Ahmed Kh. Zamil 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 Esiur.Data; using Esiur.Core; using Esiur.Misc; using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace Esiur.Net.Packets; class IIPPacket : Packet { public override string ToString() { var rt = Method.ToString(); if (Method == IIPPacketMethod.Notification) { rt += " " + Notification.ToString(); } else if (Method == IIPPacketMethod.Request) { rt += " " + Request.ToString(); } else if (Method == IIPPacketMethod.Reply) { rt += " " + Reply.ToString(); } return rt; } public uint CallbackId { get; set; } public IIPPacketMethod Method { get; set; } public IIPPacketRequest Request { get; set; } public IIPPacketReply Reply { get; set; } public byte Extention { get; set; } public IIPPacketNotification Notification { get; set; } public TransmissionType? DataType { get; set; } private uint dataLengthNeeded; private uint originalOffset; public override bool Compose() { return base.Compose(); } bool NotEnough(uint offset, uint ends, uint needed) { if (offset + needed > ends) { dataLengthNeeded = needed - (ends - offset); //dataLengthNeeded = needed - (ends - originalOffset); return true; } else return false; } public override long Parse(byte[] data, uint offset, uint ends) { originalOffset = offset; if (NotEnough(offset, ends, 1)) return -dataLengthNeeded; var hasDTU = (data[offset] & 0x20) == 0x20; Method = (IIPPacketMethod)(data[offset] >> 6); if (Method == IIPPacketMethod.Notification) { Notification = (IIPPacketNotification)(data[offset++] & 0x3f); } else if (Method == IIPPacketMethod.Request) { Request = (IIPPacketRequest)(data[offset++] & 0x3f); if (NotEnough(offset, ends, 4)) return -dataLengthNeeded; CallbackId = data.GetUInt32(offset, Endian.Little); offset += 4; } else if (Method == IIPPacketMethod.Reply) { Reply = (IIPPacketReply)(data[offset++] & 0x3f); if (NotEnough(offset, ends, 4)) return -dataLengthNeeded; CallbackId = data.GetUInt32(offset, Endian.Little); offset += 4; } else if (Method == IIPPacketMethod.Extension) { Extention = (byte)(data[offset++] & 0x3f); } if (Command == IIPPacketCommand.Event) { if (Event == IIPPacketEvent.ResourceReassigned) { if (NotEnough(offset, ends, 4)) return -dataLengthNeeded; NewResourceId = data.GetUInt32(offset, Endian.Little); offset += 4; } else if (Event == IIPPacketEvent.ResourceDestroyed) { // nothing to parse } else if (Event == IIPPacketEvent.ChildAdded || Event == IIPPacketEvent.ChildRemoved) { if (NotEnough(offset, ends, 4)) return -dataLengthNeeded; ChildId = data.GetUInt32(offset, Endian.Little); offset += 4; } else if (Event == IIPPacketEvent.Renamed) { if (NotEnough(offset, ends, 2)) return -dataLengthNeeded; var cl = data.GetUInt16(offset, Endian.Little); offset += 2; if (NotEnough(offset, ends, cl)) return -dataLengthNeeded; ResourceName = data.GetString(offset, cl); //Content = data.Clip(offset, cl); offset += cl; } else if (Event == IIPPacketEvent.PropertyUpdated || Event == IIPPacketEvent.EventOccurred) { if (NotEnough(offset, ends, 2)) return -dataLengthNeeded; MethodIndex = data[offset++]; (var size, DataType) = TransmissionType.Parse(data, offset, ends); //var dt = (DataType)data[offset++]; //var size = dt.Size();// Codec.SizeOf(dt); if (DataType == null) return -(int)size; //Content = data.Clip(DataType.Value.Offset, (uint)DataType.Value.ContentLength); offset += (uint)size; } //else if (Event == IIPPacketEvent.EventOccurred) //{ // if (NotEnough(offset, ends, 5)) // return -dataLengthNeeded; // MethodIndex = data[offset++]; // var cl = data.GetUInt32(offset); // offset += 4; // if (NotEnough(offset, ends, cl)) // return -dataLengthNeeded; // Content = data.Clip(offset, cl); // offset += cl; //} // Attribute else if (Event == IIPPacketEvent.AttributesUpdated) { if (NotEnough(offset, ends, 4)) return -dataLengthNeeded; var cl = data.GetUInt32(offset, Endian.Little); offset += 4; if (NotEnough(offset, ends, cl)) return -dataLengthNeeded; //@TODO: Fix this //Content = data.Clip(offset, cl); offset += cl; } } else if (Command == IIPPacketCommand.Request) { if (Action == IIPPacketRequest.AttachResource) { if (NotEnough(offset, ends, 4)) return -dataLengthNeeded; ResourceId = data.GetUInt32(offset, Endian.Little); offset += 4; } else if (Action == IIPPacketRequest.ReattachResource) { if (NotEnough(offset, ends, 12)) return -dataLengthNeeded; ResourceId = data.GetUInt32(offset, Endian.Little); offset += 4; ResourceAge = data.GetUInt64(offset, Endian.Little); offset += 8; } else if (Action == IIPPacketRequest.DetachResource) { if (NotEnough(offset, ends, 4)) return -dataLengthNeeded; ResourceId = data.GetUInt32(offset, Endian.Little); offset += 4; } else if (Action == IIPPacketRequest.CreateResource) { if (NotEnough(offset, ends, 12)) return -dataLengthNeeded; StoreId = data.GetUInt32(offset, Endian.Little); offset += 4; ResourceId = data.GetUInt32(offset, Endian.Little); offset += 4; var cl = data.GetUInt32(offset, Endian.Little); offset += 4; if (NotEnough(offset, ends, cl)) return -dataLengthNeeded; // @TODO: fix this //this.Content = data.Clip(offset, cl); } else if (Action == IIPPacketRequest.DeleteResource) { if (NotEnough(offset, ends, 4)) return -dataLengthNeeded; ResourceId = data.GetUInt32(offset, Endian.Little); offset += 4; } else if (Action == IIPPacketRequest.AddChild || Action == IIPPacketRequest.RemoveChild) { if (NotEnough(offset, ends, 8)) return -dataLengthNeeded; ResourceId = data.GetUInt32(offset, Endian.Little); offset += 4; ChildId = data.GetUInt32(offset, Endian.Little); offset += 4; } else if (Action == IIPPacketRequest.RenameResource) { if (NotEnough(offset, ends, 6)) return -dataLengthNeeded; ResourceId = data.GetUInt32(offset, Endian.Little); offset += 4; var cl = data.GetUInt16(offset, Endian.Little); offset += 2; if (NotEnough(offset, ends, cl)) return -dataLengthNeeded; ResourceName = data.GetString(offset, cl); //Content = data.Clip(offset, cl); offset += cl; } else if (Action == IIPPacketRequest.TemplateFromClassName) { if (NotEnough(offset, ends, 1)) return -dataLengthNeeded; var cl = data[offset++]; if (NotEnough(offset, ends, cl)) return -dataLengthNeeded; ClassName = data.GetString(offset, cl); offset += cl; } else if (Action == IIPPacketRequest.TemplateFromClassId) { if (NotEnough(offset, ends, 16)) return -dataLengthNeeded; ClassId = data.GetUUID(offset); offset += 16; } else if (Action == IIPPacketRequest.TemplateFromResourceId) { if (NotEnough(offset, ends, 4)) return -dataLengthNeeded; ResourceId = data.GetUInt32(offset, Endian.Little); offset += 4; } else if (Action == IIPPacketRequest.QueryLink || Action == IIPPacketRequest.LinkTemplates) { if (NotEnough(offset, ends, 2)) return -dataLengthNeeded; var cl = data.GetUInt16(offset, Endian.Little); offset += 2; if (NotEnough(offset, ends, cl)) return -dataLengthNeeded; ResourceLink = data.GetString(offset, cl); offset += cl; } else if (Action == IIPPacketRequest.ResourceChildren || Action == IIPPacketRequest.ResourceParents) { if (NotEnough(offset, ends, 4)) return -dataLengthNeeded; ResourceId = data.GetUInt32(offset, Endian.Little); offset += 4; } else if (Action == IIPPacketRequest.ResourceHistory) { if (NotEnough(offset, ends, 20)) return -dataLengthNeeded; ResourceId = data.GetUInt32(offset, Endian.Little); offset += 4; FromDate = data.GetDateTime(offset, Endian.Little); offset += 8; ToDate = data.GetDateTime(offset, Endian.Little); offset += 8; } else if (Action == IIPPacketRequest.InvokeFunction) { if (NotEnough(offset, ends, 6)) return -dataLengthNeeded; ResourceId = data.GetUInt32(offset, Endian.Little); offset += 4; MethodIndex = data[offset++]; (var size, DataType) = TransmissionType.Parse(data, offset, ends); if (DataType == null) return -(int)size; offset += (uint)size; //var cl = data.GetUInt32(offset); //offset += 4; //if (NotEnough(offset, ends, cl)) // return -dataLengthNeeded; //Content = data.Clip(offset, cl); //offset += cl; } else if (Action == IIPPacketRequest.Listen || Action == IIPPacketRequest.Unlisten)// .GetProperty) { if (NotEnough(offset, ends, 5)) return -dataLengthNeeded; ResourceId = data.GetUInt32(offset, Endian.Little); offset += 4; MethodIndex = data[offset++]; } //else if (Action == IIPPacketAction.GetPropertyIfModified) //{ // if (NotEnough(offset, ends, 9)) // return -dataLengthNeeded; // ResourceId = data.GetUInt32(offset); // offset += 4; // MethodIndex = data[offset++]; // ResourceAge = data.GetUInt64(offset); // offset += 8; //} else if (Action == IIPPacketRequest.SetProperty) { if (NotEnough(offset, ends, 6)) return -dataLengthNeeded; ResourceId = data.GetUInt32(offset, Endian.Little); offset += 4; MethodIndex = data[offset++]; (var size, DataType) = TransmissionType.Parse(data, offset, ends); if (DataType == null) return -(int)size; //Content = data.Clip(DataType.Value.Offset, (uint)DataType.Value.ContentLength); offset += (uint)size; } // Attributes else if (Action == IIPPacketRequest.UpdateAllAttributes || Action == IIPPacketRequest.GetAttributes || Action == IIPPacketRequest.UpdateAttributes || Action == IIPPacketRequest.ClearAttributes) { if (NotEnough(offset, ends, 8)) return -dataLengthNeeded; ResourceId = data.GetUInt32(offset, Endian.Little); offset += 4; var cl = data.GetUInt32(offset, Endian.Little); offset += 4; if (NotEnough(offset, ends, cl)) return -dataLengthNeeded; // @TODO: fix this //Content = data.Clip(offset, cl); offset += cl; } else if (Action == IIPPacketRequest.KeepAlive) { if (NotEnough(offset, ends, 12)) return -dataLengthNeeded; CurrentTime = data.GetDateTime(offset, Endian.Little); offset += 8; Interval = data.GetUInt32(offset, Endian.Little); offset += 4; } else if (Action == IIPPacketRequest.ProcedureCall) { if (NotEnough(offset, ends, 2)) return -dataLengthNeeded; var cl = data.GetUInt16(offset, Endian.Little); offset += 2; if (NotEnough(offset, ends, cl)) return -dataLengthNeeded; Procedure = data.GetString(offset, cl); offset += cl; if (NotEnough(offset, ends, 1)) return -dataLengthNeeded; (var size, DataType) = TransmissionType.Parse(data, offset, ends); if (DataType == null) return -(int)size; offset += (uint)size; } else if (Action == IIPPacketRequest.StaticCall) { if (NotEnough(offset, ends, 18)) return -dataLengthNeeded; ClassId = data.GetUUID(offset);//, Endian.Little); offset += 16; MethodIndex = data[offset++]; (var size, DataType) = TransmissionType.Parse(data, offset, ends); if (DataType == null) return -(int)size; offset += (uint)size; } } else if (Command == IIPPacketCommand.Reply) { if (Action == IIPPacketRequest.AttachResource || Action == IIPPacketRequest.ReattachResource) { if (NotEnough(offset, ends, 26)) return -dataLengthNeeded; ClassId = data.GetUUID(offset); offset += 16; ResourceAge = data.GetUInt64(offset, Endian.Little); offset += 8; uint cl = data.GetUInt16(offset, Endian.Little); offset += 2; if (NotEnough(offset, ends, cl)) return -dataLengthNeeded; ResourceLink = data.GetString(offset, cl); offset += cl; //if (NotEnough(offset, ends, 4)) // return -dataLengthNeeded; (var size, DataType) = TransmissionType.Parse(data, offset, ends); if (DataType == null) return -(int)size; offset += (uint)size; //Content = data.Clip(DataType.Value.Offset, (uint)DataType.Value.ContentLength); } else if (Action == IIPPacketRequest.DetachResource) { // nothing to do } else if (Action == IIPPacketRequest.CreateResource) { if (NotEnough(offset, ends, 20)) return -dataLengthNeeded; //ClassId = data.GetGuid(offset); //offset += 16; ResourceId = data.GetUInt32(offset, Endian.Little); offset += 4; } else if (Action == IIPPacketRequest.DetachResource) { // nothing to do } // Inquire else if (Action == IIPPacketRequest.TemplateFromClassName || Action == IIPPacketRequest.TemplateFromClassId || Action == IIPPacketRequest.TemplateFromResourceId || Action == IIPPacketRequest.QueryLink || Action == IIPPacketRequest.ResourceChildren || Action == IIPPacketRequest.ResourceParents || Action == IIPPacketRequest.ResourceHistory || Action == IIPPacketRequest.LinkTemplates // Attribute || Action == IIPPacketRequest.GetAllAttributes || Action == IIPPacketRequest.GetAttributes) { if (NotEnough(offset, ends, 1)) return -dataLengthNeeded; (var size, DataType) = TransmissionType.Parse(data, offset, ends); if (DataType == null) return -(int)size; offset += (uint)size; //var cl = data.GetUInt32(offset); //offset += 4; //if (NotEnough(offset, ends, cl)) // return -dataLengthNeeded; //Content = data.Clip(offset, cl); //offset += cl; } else if (Action == IIPPacketRequest.InvokeFunction || Action == IIPPacketRequest.ProcedureCall || Action == IIPPacketRequest.StaticCall) { if (NotEnough(offset, ends, 1)) return -dataLengthNeeded; (var size, DataType) = TransmissionType.Parse(data, offset, ends); if (DataType == null) return -(int)size; offset += (uint)size; //Content = data.Clip(DataType.Value.Offset, (uint)DataType.Value.ContentLength); } else if (Action == IIPPacketRequest.SetProperty || Action == IIPPacketRequest.Listen || Action == IIPPacketRequest.Unlisten) { // nothing to do } else if (Action == IIPPacketRequest.KeepAlive) { if (NotEnough(offset, ends, 12)) return -dataLengthNeeded; CurrentTime = data.GetDateTime(offset, Endian.Little); offset += 8; Jitter = data.GetUInt32(offset, Endian.Little); offset += 4; } } else if (Command == IIPPacketCommand.Report) { if (Report == IIPPacketReport.ManagementError) { if (NotEnough(offset, ends, 2)) return -dataLengthNeeded; ErrorCode = data.GetUInt16(offset, Endian.Little); offset += 2; } else if (Report == IIPPacketReport.ExecutionError) { if (NotEnough(offset, ends, 2)) return -dataLengthNeeded; ErrorCode = data.GetUInt16(offset, Endian.Little); offset += 2; if (NotEnough(offset, ends, 2)) return -dataLengthNeeded; var cl = data.GetUInt16(offset, Endian.Little); offset += 2; if (NotEnough(offset, ends, cl)) return -dataLengthNeeded; ErrorMessage = data.GetString(offset, cl); offset += cl; } else if (Report == IIPPacketReport.ProgressReport) { if (NotEnough(offset, ends, 8)) return -dataLengthNeeded; ProgressValue = data.GetInt32(offset, Endian.Little); offset += 4; ProgressMax = data.GetInt32(offset, Endian.Little); offset += 4; } else if (Report == IIPPacketReport.ChunkStream) { if (NotEnough(offset, ends, 1)) return -dataLengthNeeded; (var size, DataType) = TransmissionType.Parse(Data, offset, ends); if (DataType == null) return -(int)size; offset += (uint)size; //Content = data.Clip(DataType.Value.Offset, (uint)DataType.Value.ContentLength); } } return offset - originalOffset; } }