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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
|
/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenSim Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System;
using System.Collections.Generic;
using Nini.Config;
using OpenMetaverse;
using OpenSim.Framework;
using OpenSim.Region.Framework.Interfaces;
using OpenSim.Region.Framework.Scenes;
namespace OpenSim.Region.CoreModules.Agent.Xfer
{
public class XferModule : IRegionModule, IXfer
{
private Scene m_scene;
public Dictionary<string, byte[]> NewFiles = new Dictionary<string, byte[]>();
public Dictionary<ulong, XferDownLoad> Transfers = new Dictionary<ulong, XferDownLoad>();
#region IRegionModule Members
public void Initialise(Scene scene, IConfigSource config)
{
m_scene = scene;
m_scene.EventManager.OnNewClient += NewClient;
m_scene.RegisterModuleInterface<IXfer>(this);
}
public void PostInitialise()
{
}
public void Close()
{
}
public string Name
{
get { return "XferModule"; }
}
public bool IsSharedModule
{
get { return false; }
}
#endregion
#region IXfer Members
public bool AddNewFile(string fileName, byte[] data)
{
lock (NewFiles)
{
if (NewFiles.ContainsKey(fileName))
{
NewFiles[fileName] = data;
}
else
{
NewFiles.Add(fileName, data);
}
}
return true;
}
#endregion
public void NewClient(IClientAPI client)
{
client.OnRequestXfer += RequestXfer;
client.OnConfirmXfer += AckPacket;
}
/// <summary>
///
/// </summary>
/// <param name="remoteClient"></param>
/// <param name="xferID"></param>
/// <param name="fileName"></param>
public void RequestXfer(IClientAPI remoteClient, ulong xferID, string 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);
if (transaction.StartSend())
{
Transfers.Remove(xferID);
}
}
}
}
}
public void AckPacket(IClientAPI remoteClient, ulong xferID, uint packet)
{
if (Transfers.ContainsKey(xferID))
{
if (Transfers[xferID].AckPacket(packet))
{
{
Transfers.Remove(xferID);
}
}
}
}
#region Nested type: XferDownLoad
public class XferDownLoad
{
public IClientAPI Client;
private bool complete;
public byte[] Data = new byte[0];
public int DataPointer = 0;
public string FileName = String.Empty;
public uint Packet = 0;
public uint Serial = 1;
public ulong XferID = 0;
public XferDownLoad(string fileName, byte[] data, ulong xferID, IClientAPI client)
{
FileName = fileName;
Data = data;
XferID = xferID;
Client = client;
}
public XferDownLoad()
{
}
/// <summary>
/// Start a transfer
/// </summary>
/// <returns>True if the transfer is complete, false if not</returns>
public bool StartSend()
{
if (Data.Length < 1000)
{
// for now (testing) we only support files under 1000 bytes
byte[] transferData = new byte[Data.Length + 4];
Array.Copy(Utils.IntToBytes(Data.Length), 0, transferData, 0, 4);
Array.Copy(Data, 0, transferData, 4, Data.Length);
Client.SendXferPacket(XferID, 0 + 0x80000000, transferData);
complete = true;
}
else
{
byte[] transferData = new byte[1000 + 4];
Array.Copy(Utils.IntToBytes(Data.Length), 0, transferData, 0, 4);
Array.Copy(Data, 0, transferData, 4, 1000);
Client.SendXferPacket(XferID, 0, transferData);
Packet++;
DataPointer = 1000;
}
return complete;
}
/// <summary>
/// Respond to an ack packet from the client
/// </summary>
/// <param name="packet"></param>
/// <returns>True if the transfer is complete, false otherwise</returns>
public bool 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;
}
}
return complete;
}
}
#endregion
}
}
|
