1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
using System;
using System.Collections.Generic;
using System.Text;
using libsecondlife;
using OpenSim.Framework.Interfaces;
using OpenSim.Framework.Utilities;
namespace OpenSim.Region.Environment
{
public class XferManager
{
public Dictionary<string, byte[]> NewFiles = new Dictionary<string, byte[]>();
public Dictionary<ulong, XferDownLoad> Transfers = new Dictionary<ulong, XferDownLoad>();
public XferManager()
{
}
/// <summary>
///
/// </summary>
/// <param name="remoteClient"></param>
/// <param name="xferID"></param>
/// <param name="fileName"></param>
public void RequestXfer(IClientAPI remoteClient, ulong xferID, string fileName)
{
Console.WriteLine("xfer request for " + fileName);
lock (NewFiles)
{
if (NewFiles.ContainsKey(fileName))
{
if (!Transfers.ContainsKey(xferID))
{
byte[] fileData = NewFiles[fileName];
XferDownLoad transaction = new XferDownLoad(fileName, fileData, xferID, remoteClient);
Transfers.Add(xferID, transaction);
NewFiles.Remove(fileName);
transaction.StartSend();
}
}
}
}
public void AckPacket(IClientAPI remoteClient, ulong xferID, uint packet)
{
if (this.Transfers.ContainsKey(xferID))
{
Transfers[xferID].AckPacket(packet);
}
}
public void AddNewFile(string fileName, byte[] data)
{
lock (NewFiles)
{
if (NewFiles.ContainsKey(fileName))
{
NewFiles[fileName] = data;
}
else
{
NewFiles.Add(fileName, data);
}
}
}
public class XferDownLoad
{
public byte[] Data = new byte[0];
public string FileName = "";
public ulong XferID = 0;
public int DataPointer = 0;
public uint Packet = 0;
public IClientAPI Client;
public uint Serial = 1;
private bool complete = false;
public XferDownLoad(string fileName, byte[] data, ulong xferID, IClientAPI client)
{
FileName = fileName;
Data = data;
XferID = xferID;
Client = client;
}
public XferDownLoad()
{
}
public void StartSend()
{
if (Data.Length < 1000)
{
// for now (testing ) we only support files under 1000 bytes
byte[] transferData = new byte[Data.Length + 4];
Array.Copy(Helpers.IntToBytes(Data.Length), 0, transferData, 0, 4);
Array.Copy(Data, 0, transferData, 4, Data.Length);
Client.SendXferPacket(XferID, 0 + 0x80000000, transferData);
complete = true;
Console.WriteLine("xfer is under 1000 bytes");
}
else
{
byte[] transferData = new byte[1000 +4];
Array.Copy(Helpers.IntToBytes(Data.Length), 0, transferData, 0, 4);
Array.Copy(Data, 0, transferData, 4, 1000);
Client.SendXferPacket(XferID, 0 , transferData);
Packet++;
DataPointer = 1000;
}
}
public void AckPacket(uint packet)
{
if (!complete)
{
if ((Data.Length - DataPointer) > 1000)
{
byte[] transferData = new byte[1000];
Array.Copy(Data, DataPointer, transferData, 0, 1000);
Client.SendXferPacket(XferID, Packet, transferData);
Packet++;
DataPointer += 1000;
}
else
{
byte[] transferData = new byte[Data.Length - DataPointer];
Array.Copy(Data, DataPointer, transferData, 0, Data.Length - DataPointer);
uint endPacket = Packet |= (uint)0x80000000;
Client.SendXferPacket(XferID, endPacket, transferData);
Packet++;
DataPointer += (Data.Length - DataPointer);
complete = true;
}
}
}
}
}
}
|
