Created
May 15, 2012 20:37
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Packet Sending
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| // ----------------------------------------------------------------------- | |
| // <copyright file="COutPacket.cs" company="Home"> | |
| // TODO: Update copyright text. | |
| // </copyright> | |
| // ----------------------------------------------------------------------- | |
| namespace PacketSender | |
| { | |
| using System; | |
| using System.Runtime.InteropServices; | |
| /// <summary> | |
| /// COutPacket struct. Type for maplestory outgoing packets. | |
| /// </summary> | |
| [StructLayout(LayoutKind.Sequential)] | |
| public struct COutPacket | |
| { | |
| /// <summary> | |
| /// Unknown attribute. | |
| /// </summary> | |
| public bool Loopback; | |
| /// <summary> | |
| /// Pointer to the packet buffer. | |
| /// </summary> | |
| public IntPtr BufferPointer; | |
| /// <summary> | |
| /// The length of the packet buffer. | |
| /// </summary> | |
| public int Length; | |
| /// <summary> | |
| /// Packet offset. | |
| /// </summary> | |
| public int Offset; | |
| /// <summary> | |
| /// Whether the packet is encrypted or not. | |
| /// </summary> | |
| public bool Encrypted; | |
| } | |
| } |
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| // ----------------------------------------------------------------------- | |
| // <copyright file="MaplestoryNativeFunctions.cs" company="Home"> | |
| // TODO: Update copyright text. | |
| // </copyright> | |
| // ----------------------------------------------------------------------- | |
| namespace PacketSender | |
| { | |
| using System; | |
| using System.Runtime.InteropServices; | |
| /// <summary> | |
| /// TODO: Update summary. | |
| /// </summary> | |
| public class MaplestoryNativeFunctions | |
| { | |
| /// <summary> | |
| /// Address of the CClientSocket::SendPacket function. | |
| /// </summary> | |
| public static readonly IntPtr SendPacketAddress = (IntPtr)0x004E2C00; | |
| /// <summary> | |
| /// Gets SendPacket. | |
| /// </summary> | |
| public static readonly DSendPacket SendPacket = | |
| (DSendPacket)Marshal.GetDelegateForFunctionPointer(SendPacketAddress, typeof(DSendPacket)); | |
| /// <summary> | |
| /// Delegate type for CClientSocket::SendPacket function. | |
| /// </summary> | |
| /// <param name="this"> | |
| /// The this pointer (CClientSocket instance). | |
| /// </param> | |
| /// <param name="packetPointer"> | |
| /// The packet pointer. | |
| /// </param> | |
| /// <returns> | |
| /// Unknown int. | |
| /// </returns> | |
| [UnmanagedFunctionPointer(CallingConvention.ThisCall, SetLastError = true)] | |
| public delegate int DSendPacket(IntPtr @this, IntPtr packetPointer); | |
| } | |
| } |
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| // ----------------------------------------------------------------------- | |
| // <copyright file="Packet.cs" company="Home"> | |
| // TODO: Update copyright text. | |
| // </copyright> | |
| // ----------------------------------------------------------------------- | |
| namespace PacketSender | |
| { | |
| using System; | |
| using System.Runtime.InteropServices; | |
| using System.Runtime.Remoting.Metadata.W3cXsd2001; | |
| using System.Windows; | |
| /// <summary> | |
| /// TODO: Update summary. | |
| /// </summary> | |
| public class Packet | |
| { | |
| /// <summary> | |
| /// CClientSocket instance to send packets with. | |
| /// </summary> | |
| private static readonly IntPtr cclientSocketInstance = Marshal.ReadIntPtr((IntPtr)0x012EAB40); | |
| /// <summary> | |
| /// The packet bytes. | |
| /// </summary> | |
| private readonly byte[] packetBytes; | |
| /// <summary> | |
| /// Initializes a new instance of the <see cref="Packet"/> class. | |
| /// </summary> | |
| /// <param name="packetString"> | |
| /// The packet string. | |
| /// </param> | |
| public Packet(string packetString) | |
| { | |
| this.packetBytes = SoapHexBinary.Parse(packetString).Value; | |
| } | |
| /// <summary> | |
| /// Sends the packet. | |
| /// </summary> | |
| public void Send() | |
| { | |
| unsafe | |
| { | |
| fixed (byte* packetBuffer = this.packetBytes) | |
| { | |
| var packet = new COutPacket | |
| { | |
| Length = this.packetBytes.Length, | |
| BufferPointer = (IntPtr)packetBuffer, | |
| Encrypted = false, | |
| Loopback = false, | |
| Offset = 0 | |
| }; | |
| var packetPointer = Marshal.AllocHGlobal(Marshal.SizeOf(packet)); | |
| Marshal.StructureToPtr(packet, packetPointer, false); | |
| MaplestoryNativeFunctions.SendPacket(cclientSocketInstance, packetPointer); | |
| Marshal.FreeHGlobal(packetPointer); | |
| } | |
| } | |
| } | |
| } | |
| } |
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