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Add project files.
This commit is contained in:
Ahmed Zamil
550
Esiur/Net/Packets/IIPPacket.cs
Normal file
550
Esiur/Net/Packets/IIPPacket.cs
Normal file
@ -0,0 +1,550 @@
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using Esiur.Data;
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using Esiur.Engine;
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using Esiur.Misc;
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using Esiur.Net.Packets;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace Esiur.Net.Packets
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{
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class IIPPacket : Packet
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{
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public enum IIPPacketCommand : byte
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{
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Event = 0,
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Request,
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Reply,
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Error,
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}
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public enum IIPPacketEvent: byte
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{
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// Event Manage
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ResourceReassigned = 0,
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ResourceDestroyed,
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// Event Invoke
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PropertyUpdated = 0x10,
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EventOccured,
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}
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public enum IIPPacketAction : byte
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{
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// Request Manage
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AttachResource = 0,
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ReattachResource,
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DetachResource,
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CreateResource,
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DeleteResource,
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// Request Inquire
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TemplateFromClassName = 0x8,
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TemplateFromClassId,
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TemplateFromResourceLink,
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TemplateFromResourceId,
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ResourceIdFromResourceLink,
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// Request Invoke
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InvokeFunction = 0x10,
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GetProperty,
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GetPropertyIfModified,
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SetProperty,
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}
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public IIPPacketCommand Command
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{
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get;
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set;
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}
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public IIPPacketAction Action
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{
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get;
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set;
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}
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public IIPPacketEvent Event
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{
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get;
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set;
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}
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public uint ResourceId { get; set; }
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public uint NewResourceId { get; set; }
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public uint ResourceAge { get; set; }
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public byte[] Content { get; set; }
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public byte ErrorCode { get; set; }
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public string ErrorMessage { get; set; }
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public string ClassName { get; set; }
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public string ResourceLink { get; set; }
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public Guid ClassId { get; set; }
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public byte MethodIndex { get; set; }
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public string MethodName { get; set; }
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public uint CallbackId { get; set; }
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private uint dataLengthNeeded;
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public override bool Compose()
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{
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return base.Compose();
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}
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bool NotEnough(uint offset, uint ends, uint needed)
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{
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if (offset + needed > ends)
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{
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dataLengthNeeded = needed - (ends - offset);
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return true;
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}
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else
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return false;
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}
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public override long Parse(byte[] data, uint offset, uint ends)
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{
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var oOffset = offset;
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if (NotEnough(offset, ends, 1))
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return -dataLengthNeeded;
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Command = (IIPPacketCommand)(data[offset] >> 6);
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if (Command == IIPPacketCommand.Event)
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{
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Event = (IIPPacketEvent)(data[offset++] & 0x3f);
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if (NotEnough(offset, ends, 4))
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return -dataLengthNeeded;
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ResourceId = data.GetUInt32(offset);
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offset += 4;
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}
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else
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{
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Action = (IIPPacketAction)(data[offset++] & 0x3f);
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if (NotEnough(offset, ends, 4))
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return -dataLengthNeeded;
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CallbackId = data.GetUInt32(offset);
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offset += 4;
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}
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if (Command == IIPPacketCommand.Event)
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{
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if (Event == IIPPacketEvent.ResourceReassigned)
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{
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if (NotEnough(offset, ends, 4))
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return -dataLengthNeeded;
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NewResourceId = data.GetUInt32( offset);
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offset += 4;
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}
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else if (Event == IIPPacketEvent.ResourceDestroyed)
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{
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// nothing to parse
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}
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else if (Event == IIPPacketEvent.PropertyUpdated)
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{
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if (NotEnough(offset, ends, 2))
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return -dataLengthNeeded;
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MethodIndex = data[offset++];
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var dt = (DataType)data[offset++];
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var size = dt.Size();// Codec.SizeOf(dt);
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if (size < 0)
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{
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if (NotEnough(offset, ends, 4))
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return -dataLengthNeeded;
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var cl = data.GetUInt32( offset);
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offset += 4;
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if (NotEnough(offset, ends, cl))
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return -dataLengthNeeded;
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Content = data.Clip( offset - 5, cl + 5);
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offset += cl;
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}
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else
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{
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if (NotEnough(offset, ends, (uint)size))
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return -dataLengthNeeded;
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Content = data.Clip(offset - 1, (uint)size + 1);
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offset += (uint)size;
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}
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}
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else if (Event == IIPPacketEvent.EventOccured)
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{
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if (NotEnough(offset, ends, 5))
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return -dataLengthNeeded;
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MethodIndex = data[offset++];
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var cl = data.GetUInt32( offset);
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offset += 4;
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Content = data.Clip( offset, cl);
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offset += cl;
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}
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}
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else if (Command == IIPPacketCommand.Request)
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{
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if (Action == IIPPacketAction.AttachResource)
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{
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if (NotEnough(offset, ends, 4))
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return -dataLengthNeeded;
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ResourceId = data.GetUInt32(offset);
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offset += 4;
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}
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else if (Action == IIPPacketAction.ReattachResource)
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{
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if (NotEnough(offset, ends, 8))
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return -dataLengthNeeded;
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ResourceId = data.GetUInt32(offset);
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offset += 4;
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ResourceAge = data.GetUInt32(offset);
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offset += 4;
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}
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else if (Action == IIPPacketAction.DetachResource)
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{
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if (NotEnough(offset, ends, 4))
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return -dataLengthNeeded;
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ResourceId = data.GetUInt32(offset);
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offset += 4;
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}
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else if (Action == IIPPacketAction.CreateResource)
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{
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if (NotEnough(offset, ends, 1))
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return -dataLengthNeeded;
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var cl = data[offset++];
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if (NotEnough(offset, ends, cl))
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return -dataLengthNeeded;
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ClassName = data.GetString(offset, cl);
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offset += cl;
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}
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else if (Action == IIPPacketAction.DeleteResource)
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{
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if (NotEnough(offset, ends, 4))
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return -dataLengthNeeded;
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ResourceId = data.GetUInt32(offset);
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offset += 4;
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}
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else if (Action == IIPPacketAction.TemplateFromClassName)
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{
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if (NotEnough(offset, ends, 1))
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return -dataLengthNeeded;
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var cl = data[offset++];
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if (NotEnough(offset, ends, cl))
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return -dataLengthNeeded;
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ClassName = data.GetString(offset, cl);
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offset += cl;
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}
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else if (Action == IIPPacketAction.TemplateFromClassId)
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{
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if (NotEnough(offset, ends, 16))
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return -dataLengthNeeded;
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ClassId = data.GetGuid(offset);
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offset += 16;
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}
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else if (Action == IIPPacketAction.TemplateFromResourceLink)
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{
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if (NotEnough(offset, ends, 2))
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return -dataLengthNeeded;
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var cl = data.GetUInt16(offset);
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offset += 2;
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if (NotEnough(offset, ends, cl))
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return -dataLengthNeeded;
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ResourceLink = data.GetString(offset, cl);
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offset += cl;
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}
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else if (Action == IIPPacketAction.TemplateFromResourceId)
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{
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if (NotEnough(offset, ends, 4))
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return -dataLengthNeeded;
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ResourceId = data.GetUInt32(offset);
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offset += 4;
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}
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else if (Action == IIPPacketAction.ResourceIdFromResourceLink)
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{
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if (NotEnough(offset, ends, 2))
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return -dataLengthNeeded;
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var cl = data.GetUInt16(offset);
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offset += 2;
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if (NotEnough(offset, ends, cl))
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return -dataLengthNeeded;
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ResourceLink = data.GetString(offset, cl);
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offset += cl;
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}
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else if (Action == IIPPacketAction.InvokeFunction)
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{
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if (NotEnough(offset, ends, 9))
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return -dataLengthNeeded;
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ResourceId = data.GetUInt32(offset);
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offset += 4;
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MethodIndex = data[offset++];
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var cl = data.GetUInt32(offset);
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offset += 4;
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if (NotEnough(offset, ends, cl))
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return -dataLengthNeeded;
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Content = data.Clip(offset, cl);
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offset += cl;
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}
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else if (Action == IIPPacketAction.GetProperty)
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{
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if (NotEnough(offset, ends, 5))
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return -dataLengthNeeded;
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ResourceId = data.GetUInt32(offset);
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offset += 4;
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MethodIndex = data[offset++];
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}
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else if (Action == IIPPacketAction.GetPropertyIfModified)
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{
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if (NotEnough(offset, ends, 9))
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return -dataLengthNeeded;
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ResourceId = data.GetUInt32(offset);
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offset += 4;
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MethodIndex = data[offset++];
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ResourceAge = data.GetUInt32(offset);
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offset += 4;
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}
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else if (Action == IIPPacketAction.SetProperty)
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{
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if (NotEnough(offset, ends, 6))
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return -dataLengthNeeded;
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ResourceId = data.GetUInt32(offset);
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offset += 4;
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MethodIndex = data[offset++];
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var dt = (DataType)data[offset++];
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var size = dt.Size();// Codec.SizeOf(dt);
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if (size < 0)
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{
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if (NotEnough(offset, ends, 4))
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return -dataLengthNeeded;
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var cl = data.GetUInt32(offset);
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offset += 4;
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if (NotEnough(offset, ends, cl))
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return -dataLengthNeeded;
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Content = data.Clip(offset-5, cl + 5);
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offset += cl;
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}
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else
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{
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if (NotEnough(offset, ends, (uint)size))
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return -dataLengthNeeded;
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Content = data.Clip(offset-1, (uint)size + 1);
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offset += (uint)size;
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}
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}
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}
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else if (Command == IIPPacketCommand.Reply)
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{
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if (Action == IIPPacketAction.AttachResource
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|| Action == IIPPacketAction.ReattachResource)
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{
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if (NotEnough(offset, ends, 26))
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return -dataLengthNeeded;
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ClassId = data.GetGuid(offset);
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offset += 16;
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ResourceAge = data.GetUInt32(offset);
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offset += 4;
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uint cl = data.GetUInt16(offset);
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offset += 2;
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if (NotEnough(offset, ends, cl))
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return -dataLengthNeeded;
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ResourceLink = data.GetString(offset, cl);
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offset += cl;
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if (NotEnough(offset, ends, 4))
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return -dataLengthNeeded;
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cl = data.GetUInt32(offset);
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offset += 4;
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if (NotEnough(offset, ends, cl))
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return -dataLengthNeeded;
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Content = data.Clip(offset, cl);
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offset += cl;
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}
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else if (Action == IIPPacketAction.DetachResource)
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{
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// nothing to do
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}
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else if (Action == IIPPacketAction.CreateResource)
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{
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if (NotEnough(offset, ends, 20))
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return -dataLengthNeeded;
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ClassId = data.GetGuid(offset);
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offset += 16;
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ResourceId = data.GetUInt32(offset);
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offset += 4;
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}
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else if (Action == IIPPacketAction.DetachResource)
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{
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// nothing to do
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}
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else if (Action == IIPPacketAction.TemplateFromClassName
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|| Action == IIPPacketAction.TemplateFromClassId
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|| Action == IIPPacketAction.TemplateFromResourceLink
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|| Action == IIPPacketAction.TemplateFromResourceId)
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{
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if (NotEnough(offset, ends, 4))
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return -dataLengthNeeded;
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var cl = data.GetUInt32(offset);
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offset += 4;
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if (NotEnough(offset, ends, cl))
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return -dataLengthNeeded;
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Content = data.Clip(offset, cl);
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offset += cl;
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}
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else if (Action == IIPPacketAction.ResourceIdFromResourceLink)
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{
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if (NotEnough(offset, ends, 24))
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return -dataLengthNeeded;
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ClassId = data.GetGuid(offset);
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offset += 16;
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ResourceId = data.GetUInt32(offset);
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offset += 4;
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ResourceAge = data.GetUInt32(offset);
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offset += 4;
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}
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else if (Action == IIPPacketAction.InvokeFunction
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|| Action == IIPPacketAction.GetProperty
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|| Action == IIPPacketAction.GetPropertyIfModified)
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{
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if (NotEnough(offset, ends, 1))
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return -dataLengthNeeded;
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var dt = (DataType)data[offset++];
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var size = dt.Size();// Codec.SizeOf(dt);
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if (size < 0)
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{
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if (NotEnough(offset, ends, 4))
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return -dataLengthNeeded;
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var cl = data.GetUInt32(offset);
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offset += 4;
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if (NotEnough(offset, ends, cl))
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return -dataLengthNeeded;
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Content = data.Clip(offset - 5, cl + 5);
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offset += cl;
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}
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else
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{
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if (NotEnough(offset, ends, (uint)size))
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return -dataLengthNeeded;
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Content = data.Clip(offset - 1, (uint)size + 1);
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offset += (uint)size;
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}
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}
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else if (Action == IIPPacketAction.SetProperty)
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{
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// nothing to do
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}
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}
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else if (Command == IIPPacketCommand.Error)
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{
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// Error
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if (NotEnough(offset, ends, 4))
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return -dataLengthNeeded;
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CallbackId = data.GetUInt32(offset);
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if (NotEnough(offset, ends, 1))
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return -dataLengthNeeded;
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ErrorCode = data[offset++];
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if (NotEnough(offset, ends, 4))
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return -dataLengthNeeded;
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var cl = data.GetUInt32(offset);
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offset += 4;
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if (NotEnough(offset, ends, cl))
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return -dataLengthNeeded;
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ErrorMessage = data.GetString(offset, cl);
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offset += cl;
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}
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return offset - oOffset;
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}
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}
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}
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||||
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