aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/OpenSim/Region/ClientStack/Linden/Caps/WebFetchInvDescModule.cs
blob: 299b4f6aa8f6712ecbefcf16083b75c6353514ae (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
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
/*
 * 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;
using System.Collections.Generic;
using System.Reflection;
using System.Threading;
using log4net;
using Nini.Config;
using Mono.Addins;
using OpenMetaverse;
using OpenMetaverse.StructuredData;
using OpenSim.Framework;
using OpenSim.Framework.Monitoring;
using OpenSim.Framework.Servers;
using OpenSim.Framework.Servers.HttpServer;
using OpenSim.Region.Framework.Interfaces;
using OpenSim.Region.Framework.Scenes;
using OpenSim.Framework.Capabilities;
using OpenSim.Services.Interfaces;
using Caps = OpenSim.Framework.Capabilities.Caps;
using OpenSim.Capabilities.Handlers;

namespace OpenSim.Region.ClientStack.Linden
{
    /// <summary>
    /// This module implements both WebFetchInventoryDescendents and FetchInventoryDescendents2 capabilities.
    /// </summary>
    [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "WebFetchInvDescModule")]
    public class WebFetchInvDescModule : INonSharedRegionModule
    {
        class aPollRequest
        {
            public PollServiceInventoryEventArgs thepoll;
            public UUID reqID;
            public Hashtable request;
            public ScenePresence presence;
            public List<UUID> folders;
        }

         private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

        /// <summary>
        /// Control whether requests will be processed asynchronously.
        /// </summary>
        /// <remarks>
        /// Defaults to true.  Can currently not be changed once a region has been added to the module.
        /// </remarks>
        public bool ProcessQueuedRequestsAsync { get; private set; }

        /// <summary>
        /// Number of inventory requests processed by this module.
        /// </summary>
        /// <remarks>
        /// It's the PollServiceRequestManager that actually sends completed requests back to the requester.
        /// </remarks>
        public static int ProcessedRequestsCount { get; set; }

        private static Stat s_queuedRequestsStat;
        private static Stat s_processedRequestsStat;

        public Scene Scene { get; private set; }

        private IInventoryService m_InventoryService;
        private ILibraryService m_LibraryService;

        private bool m_Enabled;

        private string m_fetchInventoryDescendents2Url;
        private string m_webFetchInventoryDescendentsUrl;

        private static FetchInvDescHandler m_webFetchHandler;

        private static Thread[] m_workerThreads = null;

        private static DoubleQueue<aPollRequest> m_queue =
                new DoubleQueue<aPollRequest>();

        #region ISharedRegionModule Members

        public WebFetchInvDescModule() : this(true) {}

        public WebFetchInvDescModule(bool processQueuedResultsAsync)
        {
            ProcessQueuedRequestsAsync = processQueuedResultsAsync;
        }

        public void Initialise(IConfigSource source)
        {
            IConfig config = source.Configs["ClientStack.LindenCaps"];
            if (config == null)
                return;

            m_fetchInventoryDescendents2Url = config.GetString("Cap_FetchInventoryDescendents2", string.Empty);
            m_webFetchInventoryDescendentsUrl = config.GetString("Cap_WebFetchInventoryDescendents", string.Empty);

            if (m_fetchInventoryDescendents2Url != string.Empty || m_webFetchInventoryDescendentsUrl != string.Empty)
            {
                m_Enabled = true;
            }
        }

        public void AddRegion(Scene s)
        {
            if (!m_Enabled)
                return;

            Scene = s;
        }

        public void RemoveRegion(Scene s)
        {
            if (!m_Enabled)
                return;

            Scene.EventManager.OnRegisterCaps -= RegisterCaps;

            StatsManager.DeregisterStat(s_processedRequestsStat);
            StatsManager.DeregisterStat(s_queuedRequestsStat);

            if (ProcessQueuedRequestsAsync)
            {
                if (m_workerThreads != null)
                {
                    foreach (Thread t in m_workerThreads)
                        Watchdog.AbortThread(t.ManagedThreadId);

                    m_workerThreads = null;
                }
            }

            Scene = null;
        }

        public void RegionLoaded(Scene s)
        {
            if (!m_Enabled)
                return;

            if (s_processedRequestsStat == null)
                s_processedRequestsStat =
                    new Stat(
                        "ProcessedFetchInventoryRequests",
                        "Number of processed fetch inventory requests",
                        "These have not necessarily yet been dispatched back to the requester.",
                        "",
                        "inventory",
                        "httpfetch",
                        StatType.Pull,
                        MeasuresOfInterest.AverageChangeOverTime,
                        stat => { stat.Value = ProcessedRequestsCount; },
                        StatVerbosity.Debug);

            if (s_queuedRequestsStat == null)
                s_queuedRequestsStat =
                    new Stat(
                        "QueuedFetchInventoryRequests",
                        "Number of fetch inventory requests queued for processing",
                        "",
                        "",
                        "inventory",
                        "httpfetch",
                        StatType.Pull,
                        MeasuresOfInterest.AverageChangeOverTime,
                        stat => { stat.Value = m_queue.Count; },
                        StatVerbosity.Debug);

            StatsManager.RegisterStat(s_processedRequestsStat);
            StatsManager.RegisterStat(s_queuedRequestsStat);

            m_InventoryService = Scene.InventoryService;
            m_LibraryService = Scene.LibraryService;

            // We'll reuse the same handler for all requests.
            m_webFetchHandler = new FetchInvDescHandler(m_InventoryService, m_LibraryService, Scene);

            Scene.EventManager.OnRegisterCaps += RegisterCaps;

            int nworkers = 2; // was 2
            if (ProcessQueuedRequestsAsync && m_workerThreads == null)
            {
                m_workerThreads = new Thread[nworkers];

                for (uint i = 0; i < nworkers; i++)
                {
                    m_workerThreads[i] = WorkManager.StartThread(DoInventoryRequests,
                            String.Format("InventoryWorkerThread{0}", i),
                            ThreadPriority.Normal,
                            false,
                            true,
                            null,
                            int.MaxValue);
                }
            }
        }

        public void PostInitialise()
        {
        }

        public void Close() { }

        public string Name { get { return "WebFetchInvDescModule"; } }

        public Type ReplaceableInterface
        {
            get { return null; }
        }

        #endregion

        private class PollServiceInventoryEventArgs : PollServiceEventArgs
        {
            private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

            private Dictionary<UUID, Hashtable> responses =
                    new Dictionary<UUID, Hashtable>();

            private WebFetchInvDescModule m_module;

            public PollServiceInventoryEventArgs(WebFetchInvDescModule module, string url, UUID pId) :
                base(null, url, null, null, null, pId, int.MaxValue)
            {
                m_module = module;

                HasEvents = (x, y) => { lock (responses) return responses.ContainsKey(x); };
                GetEvents = (x, y) =>
                {
                    lock (responses)
                    {
                        try
                        {
                            return responses[x];
                        }
                        finally
                        {
                            responses.Remove(x);
                        }
                    }
                };

                Request = (x, y) =>
                {
                    ScenePresence sp = m_module.Scene.GetScenePresence(Id);
                    if (sp == null)
                    {
                        m_log.ErrorFormat("[INVENTORY]: Unable to find ScenePresence for {0}", Id);
                        return;
                    }

                    aPollRequest reqinfo = new aPollRequest();
                    reqinfo.thepoll = this;
                    reqinfo.reqID = x;
                    reqinfo.request = y;
                    reqinfo.presence = sp;
                    reqinfo.folders = new List<UUID>();

                    // Decode the request here
                    string request = y["body"].ToString();

                    request = request.Replace("<string>00000000-0000-0000-0000-000000000000</string>", "<uuid>00000000-0000-0000-0000-000000000000</uuid>");

                    request = request.Replace("<key>fetch_folders</key><integer>0</integer>", "<key>fetch_folders</key><boolean>0</boolean>");
                    request = request.Replace("<key>fetch_folders</key><integer>1</integer>", "<key>fetch_folders</key><boolean>1</boolean>");

                    Hashtable hash = new Hashtable();
                    try
                    {
                        hash = (Hashtable)LLSD.LLSDDeserialize(Utils.StringToBytes(request));
                    }
                    catch (LLSD.LLSDParseException e)
                    {
                        m_log.ErrorFormat("[INVENTORY]: Fetch error: {0}{1}" + e.Message, e.StackTrace);
                        m_log.Error("Request: " + request);
                        return;
                    }
                    catch (System.Xml.XmlException)
                    {
                        m_log.ErrorFormat("[INVENTORY]: XML Format error");
                    }

                    ArrayList foldersrequested = (ArrayList)hash["folders"];

                    bool highPriority = false;

                    for (int i = 0; i < foldersrequested.Count; i++)
                    {
                        Hashtable inventoryhash = (Hashtable)foldersrequested[i];
                        string folder = inventoryhash["folder_id"].ToString();
                        UUID folderID;
                        if (UUID.TryParse(folder, out folderID))
                        {
                            if (!reqinfo.folders.Contains(folderID))
                            {
                                //TODO: Port COF handling from Avination
                                reqinfo.folders.Add(folderID);
                            }
                        }
                    }

                    if (highPriority)
                        m_queue.EnqueueHigh(reqinfo);
                    else
                        m_queue.EnqueueLow(reqinfo);
                };

                NoEvents = (x, y) =>
                {
/*
                    lock (requests)
                    {
                        Hashtable request = requests.Find(id => id["RequestID"].ToString() == x.ToString());
                        requests.Remove(request);
                    }
*/
                    Hashtable response = new Hashtable();

                    response["int_response_code"] = 500;
                    response["str_response_string"] = "Script timeout";
                    response["content_type"] = "text/plain";
                    response["keepalive"] = false;
                    response["reusecontext"] = false;

                    return response;
                };
            }

            public void Process(aPollRequest requestinfo)
            {
                UUID requestID = requestinfo.reqID;

                Hashtable response = new Hashtable();

                response["int_response_code"] = 200;
                response["content_type"] = "text/plain";
                response["keepalive"] = false;
                response["reusecontext"] = false;

                response["str_response_string"] = m_webFetchHandler.FetchInventoryDescendentsRequest(
                        requestinfo.request["body"].ToString(), String.Empty, String.Empty, null, null);

                lock (responses)
                {
                    if (responses.ContainsKey(requestID))
                        m_log.WarnFormat("[FETCH INVENTORY DESCENDENTS2 MODULE]: Caught in the act of loosing responses! Please report this on mantis #7054");
                    responses[requestID] = response;
                }

                WebFetchInvDescModule.ProcessedRequestsCount++;
            }
        }

        private void RegisterCaps(UUID agentID, Caps caps)
        {
            RegisterFetchDescendentsCap(agentID, caps, "FetchInventoryDescendents2", m_fetchInventoryDescendents2Url);
        }

        private void RegisterFetchDescendentsCap(UUID agentID, Caps caps, string capName, string url)
        {
            string capUrl;

            // disable the cap clause
            if (url == "")
            {
                return;
            }
            // handled by the simulator
            else if (url == "localhost")
            {
                capUrl = "/CAPS/" + UUID.Random() + "/";

                // Register this as a poll service
                PollServiceInventoryEventArgs args = new PollServiceInventoryEventArgs(this, capUrl, agentID);
                args.Type = PollServiceEventArgs.EventType.Inventory;

                caps.RegisterPollHandler(capName, args);
            }
            // external handler
            else
            {
                capUrl = url;
                IExternalCapsModule handler = Scene.RequestModuleInterface<IExternalCapsModule>();
                if (handler != null)
                    handler.RegisterExternalUserCapsHandler(agentID,caps,capName,capUrl);
                else
                    caps.RegisterHandler(capName, capUrl);
            }

            // m_log.DebugFormat(
            //     "[FETCH INVENTORY DESCENDENTS2 MODULE]: Registered capability {0} at {1} in region {2} for {3}",
            //     capName, capUrl, m_scene.RegionInfo.RegionName, agentID);
        }

//        private void DeregisterCaps(UUID agentID, Caps caps)
//        {
//            string capUrl;
//
//            if (m_capsDict.TryGetValue(agentID, out capUrl))
//            {
//                MainServer.Instance.RemoveHTTPHandler("", capUrl);
//                m_capsDict.Remove(agentID);
//            }
//        }

        private void DoInventoryRequests()
        {
            while (true)
            {
                Watchdog.UpdateThread();

                WaitProcessQueuedInventoryRequest();
            }
        }

        public void WaitProcessQueuedInventoryRequest()
        {
            aPollRequest poolreq = m_queue.Dequeue();

            if (poolreq != null && poolreq.thepoll != null)
            {
                try
                {
                    poolreq.thepoll.Process(poolreq);
                }
                catch (Exception e)
                {
                    m_log.ErrorFormat(
                        "[INVENTORY]: Failed to process queued inventory request {0} for {1} in {2}.  Exception {3}", 
                        poolreq.reqID, poolreq.presence != null ? poolreq.presence.Name : "unknown", Scene.Name, e);
                }
            }
        }
    }
}