aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/OpenSim/Region/CoreModules/Avatar/Chat/ChatModule.cs
blob: 35a3f437759906b1ebbfb648ba70bab0c29b5cac (plain)
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
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
/*
 * 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 OpenSimulator 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 System.Reflection;
using log4net;
using Nini.Config;
using OpenMetaverse;
using OpenSim.Framework;
using OpenSim.Region.Framework.Interfaces;
using OpenSim.Region.Framework.Scenes;

namespace OpenSim.Region.CoreModules.Avatar.Chat
{
    public class ChatModule : ISharedRegionModule
    {
        private static readonly ILog m_log =
            LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

        private const int DEBUG_CHANNEL = 2147483647;

        private bool m_enabled = true;
        private int m_saydistance = 30;
        private int m_shoutdistance = 100;
        private int m_whisperdistance = 10;
        private List<Scene> m_scenes = new List<Scene>();
        private List<string> FreezeCache = new List<string>();
        private string m_adminPrefix = "";
        internal object m_syncy = new object();

        internal IConfig m_config;

        #region ISharedRegionModule Members
        public virtual void Initialise(IConfigSource config)
        {
            m_config = config.Configs["Chat"];

            if (null == m_config)
            {
                m_log.Info("[CHAT]: no config found, plugin disabled");
                m_enabled = false;
                return;
            }

            if (!m_config.GetBoolean("enabled", true))
            {
                m_log.Info("[CHAT]: plugin disabled by configuration");
                m_enabled = false;
                return;
            }

            m_whisperdistance = config.Configs["Chat"].GetInt("whisper_distance", m_whisperdistance);
            m_saydistance = config.Configs["Chat"].GetInt("say_distance", m_saydistance);
            m_shoutdistance = config.Configs["Chat"].GetInt("shout_distance", m_shoutdistance);
            m_adminPrefix = config.Configs["Chat"].GetString("admin_prefix", "");
        }

        public virtual void AddRegion(Scene scene)
        {
            if (!m_enabled) return;

            lock (m_syncy)
            {
                if (!m_scenes.Contains(scene))
                {
                    m_scenes.Add(scene);
                    scene.EventManager.OnNewClient += OnNewClient;
                    scene.EventManager.OnChatFromWorld += OnChatFromWorld;
                    scene.EventManager.OnChatBroadcast += OnChatBroadcast;
                }
            }

            m_log.InfoFormat("[CHAT]: Initialized for {0} w:{1} s:{2} S:{3}", scene.RegionInfo.RegionName,
                             m_whisperdistance, m_saydistance, m_shoutdistance);
        }

        public virtual void RegionLoaded(Scene scene)
        {
        }

        public virtual void RemoveRegion(Scene scene)
        {
            if (!m_enabled) return;

            lock (m_syncy)
            {
                if (m_scenes.Contains(scene))
                {
                    scene.EventManager.OnNewClient -= OnNewClient;
                    scene.EventManager.OnChatFromWorld -= OnChatFromWorld;
                    scene.EventManager.OnChatBroadcast -= OnChatBroadcast;
                    m_scenes.Remove(scene);
                }
            }
        }
        
        public virtual void Close()
        {
        }

        public virtual void PostInitialise()
        {
        }

        public Type ReplaceableInterface 
        {
            get { return null; }
        }

        public virtual string Name
        {
            get { return "ChatModule"; }
        }

        #endregion


        public virtual void OnNewClient(IClientAPI client)
        {
            client.OnChatFromClient += OnChatFromClient;
        }

        protected OSChatMessage FixPositionOfChatMessage(OSChatMessage c)
        {
            ScenePresence avatar;
            Scene scene = (Scene)c.Scene;
            if ((avatar = scene.GetScenePresence(c.Sender.AgentId)) != null)
                c.Position = avatar.AbsolutePosition;

            return c;
        }

        public virtual void OnChatFromClient(Object sender, OSChatMessage c)
        {
            c = FixPositionOfChatMessage(c);

            // redistribute to interested subscribers
            Scene scene = (Scene)c.Scene;
            scene.EventManager.TriggerOnChatFromClient(sender, c);

            // early return if not on public or debug channel
            if (c.Channel != 0 && c.Channel != DEBUG_CHANNEL) return;

            // sanity check:
            if (c.Sender == null)
            {
                m_log.ErrorFormat("[CHAT]: OnChatFromClient from {0} has empty Sender field!", sender);
                return;
            }

            if (FreezeCache.Contains(c.Sender.AgentId.ToString()))
            {
                if (c.Type != ChatTypeEnum.StartTyping || c.Type != ChatTypeEnum.StopTyping)
                    c.Sender.SendAgentAlertMessage("You may not talk as you are frozen.", false);
            }
            else
            {
                DeliverChatToAvatars(ChatSourceType.Agent, c);
            }
        }

        public virtual void OnChatFromWorld(Object sender, OSChatMessage c)
        {
            // early return if not on public or debug channel
            if (c.Channel != 0 && c.Channel != DEBUG_CHANNEL) return;

            DeliverChatToAvatars(ChatSourceType.Object, c);
        }

        protected virtual void DeliverChatToAvatars(ChatSourceType sourceType, OSChatMessage c)
        {
            string fromName = c.From;
            string fromNamePrefix = "";
            UUID fromID = UUID.Zero;
            string message = c.Message;
            IScene scene = c.Scene;
            Vector3 fromPos = c.Position;
            Vector3 regionPos = new Vector3(scene.RegionInfo.RegionLocX * Constants.RegionSize,
                                            scene.RegionInfo.RegionLocY * Constants.RegionSize, 0);

            if (c.Channel == DEBUG_CHANNEL) c.Type = ChatTypeEnum.DebugChannel;

            switch (sourceType) 
            {
            case ChatSourceType.Agent:
                if (!(scene is Scene))
                {
                    m_log.WarnFormat("[CHAT]: scene {0} is not a Scene object, cannot obtain scene presence for {1}",
                                     scene.RegionInfo.RegionName, c.Sender.AgentId);
                    return;
                }
                ScenePresence avatar = (scene as Scene).GetScenePresence(c.Sender.AgentId);
                fromPos = avatar.AbsolutePosition;
                fromName = avatar.Name;
                fromID = c.Sender.AgentId;
                if (avatar.GodLevel >= 200)
                {
                    fromNamePrefix = m_adminPrefix;
                }
                break;

            case ChatSourceType.Object:
                fromID = c.SenderUUID;

                break;
            }

            // TODO: iterate over message
            if (message.Length >= 1000) // libomv limit
                message = message.Substring(0, 1000);

//            m_log.DebugFormat(
//                "[CHAT]: DCTA: fromID {0} fromName {1}, region{2}, cType {3}, sType {4}", 
//                fromID, fromName, scene.RegionInfo.RegionName, c.Type, sourceType);

            HashSet<UUID> receiverIDs = new HashSet<UUID>();
            
            foreach (Scene s in m_scenes)
            {
                s.ForEachScenePresence(
                    delegate(ScenePresence presence)
                    {
                        ILandObject Presencecheck = s.LandChannel.GetLandObject(presence.AbsolutePosition.X, presence.AbsolutePosition.Y);
                        if (Presencecheck != null)
                        {
                            // This will pass all chat from objects. Not
                            // perfect, but it will do. For now. Better
                            // than the prior behavior of muting all
                            // objects on a parcel with access restrictions
                            if (c.Sender == null || Presencecheck.IsEitherBannedOrRestricted(c.Sender.AgentId) != true)
                            {
                                if (TrySendChatMessage(presence, fromPos, regionPos, fromID, fromNamePrefix + fromName, c.Type, message, sourceType))
                                    receiverIDs.Add(presence.UUID);
                            }
                        }

                    }
                );
            }
            
            (scene as Scene).EventManager.TriggerOnChatToClients(
                fromID, receiverIDs, message, c.Type, fromPos, fromName, sourceType, ChatAudibleLevel.Fully);
        }

        static private Vector3 CenterOfRegion = new Vector3(128, 128, 30);
        
        public virtual void OnChatBroadcast(Object sender, OSChatMessage c)
        {
            if (c.Channel != 0 && c.Channel != DEBUG_CHANNEL) return;

            ChatTypeEnum cType = c.Type;
            if (c.Channel == DEBUG_CHANNEL)
                cType = ChatTypeEnum.DebugChannel;

            if (cType == ChatTypeEnum.Region)
                cType = ChatTypeEnum.Say;

            if (c.Message.Length > 1100)
                c.Message = c.Message.Substring(0, 1000);

            // broadcast chat works by redistributing every incoming chat
            // message to each avatar in the scene.
            string fromName = c.From;
            
            UUID fromID = UUID.Zero;
            ChatSourceType sourceType = ChatSourceType.Object;
            if (null != c.Sender)
            {
                ScenePresence avatar = (c.Scene as Scene).GetScenePresence(c.Sender.AgentId);
                fromID = c.Sender.AgentId;
                fromName = avatar.Name;
                sourceType = ChatSourceType.Agent;
            }
            else if (c.SenderUUID != UUID.Zero) 
            {
                fromID = c.SenderUUID; 
            }
            
            // m_log.DebugFormat("[CHAT] Broadcast: fromID {0} fromName {1}, cType {2}, sType {3}", fromID, fromName, cType, sourceType);
            HashSet<UUID> receiverIDs = new HashSet<UUID>();
            
            if (c.Scene != null)
            {
                ((Scene)c.Scene).ForEachScenePresence
                (
                    delegate(ScenePresence presence)
                    {
                        // ignore chat from child agents
                        if (presence.IsChildAgent) return;
                        
                        IClientAPI client = presence.ControllingClient;
                        
                        // don't forward SayOwner chat from objects to
                        // non-owner agents
                        if ((c.Type == ChatTypeEnum.Owner) &&
                            (null != c.SenderObject) &&
                            (((SceneObjectPart)c.SenderObject).OwnerID != client.AgentId))
                            return;
                        
                        client.SendChatMessage(c.Message, (byte)cType, CenterOfRegion, fromName, fromID, 
                                               (byte)sourceType, (byte)ChatAudibleLevel.Fully);
                        receiverIDs.Add(presence.UUID);
                    }
                );
                (c.Scene as Scene).EventManager.TriggerOnChatToClients(
                    fromID, receiverIDs, c.Message, cType, CenterOfRegion, fromName, sourceType, ChatAudibleLevel.Fully);
             }
        }

        /// <summary>
        /// Try to send a message to the given presence
        /// </summary>
        /// <param name="presence">The receiver</param>
        /// <param name="fromPos"></param>
        /// <param name="regionPos">/param>
        /// <param name="fromAgentID"></param>
        /// <param name="fromName"></param>
        /// <param name="type"></param>
        /// <param name="message"></param>
        /// <param name="src"></param>
        /// <returns>true if the message was sent to the receiver, false if it was not sent due to failing a 
        /// precondition</returns>
        protected virtual bool TrySendChatMessage(ScenePresence presence, Vector3 fromPos, Vector3 regionPos,
                                                  UUID fromAgentID, string fromName, ChatTypeEnum type,
                                                  string message, ChatSourceType src)
        {
            // don't send stuff to child agents
            if (presence.IsChildAgent) return false;

            Vector3 fromRegionPos = fromPos + regionPos;
            Vector3 toRegionPos = presence.AbsolutePosition +
                new Vector3(presence.Scene.RegionInfo.RegionLocX * Constants.RegionSize,
                            presence.Scene.RegionInfo.RegionLocY * Constants.RegionSize, 0);

            int dis = (int)Util.GetDistanceTo(toRegionPos, fromRegionPos);
            
            if (type == ChatTypeEnum.Whisper && dis > m_whisperdistance ||
                type == ChatTypeEnum.Say && dis > m_saydistance ||
                type == ChatTypeEnum.Shout && dis > m_shoutdistance)
            {
                return false;
            }

            // TODO: should change so the message is sent through the avatar rather than direct to the ClientView
            presence.ControllingClient.SendChatMessage(message, (byte) type, fromPos, fromName,
                                                       fromAgentID, (byte)src, (byte)ChatAudibleLevel.Fully);
            
            return true;
        }

        Dictionary<UUID, System.Threading.Timer> Timers = new Dictionary<UUID, System.Threading.Timer>();
        public void ParcelFreezeUser(IClientAPI client, UUID parcelowner, uint flags, UUID target)
        {
            System.Threading.Timer Timer;
            if (flags == 0)
            {
                FreezeCache.Add(target.ToString());
                System.Threading.TimerCallback timeCB = new System.Threading.TimerCallback(OnEndParcelFrozen);
                Timer = new System.Threading.Timer(timeCB, target, 30000, 0);
                Timers.Add(target, Timer);
            }
            else
            {
                FreezeCache.Remove(target.ToString());
                Timers.TryGetValue(target, out Timer);
                Timers.Remove(target);
                Timer.Dispose();
            }
        }

        private void OnEndParcelFrozen(object avatar)
        {
            UUID target = (UUID)avatar;
            FreezeCache.Remove(target.ToString());
            System.Threading.Timer Timer;
            Timers.TryGetValue(target, out Timer);
            Timers.Remove(target);
            Timer.Dispose();
        }
    }
}