aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/OpenSim/Capabilities/Handlers/FetchInventoryDescendents/FetchInvDescHandler.cs
blob: 3d3340ff8ad725d3c7422f986b2b9b1dd163d21a (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
/*
 * 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 log4net;
using Nini.Config;
using OpenMetaverse;
using OpenMetaverse.StructuredData;
using OpenSim.Framework;
using OpenSim.Framework.Capabilities;
using OpenSim.Region.Framework.Interfaces;
using OpenSim.Framework.Servers.HttpServer;
using OpenSim.Services.Interfaces;
using Caps = OpenSim.Framework.Capabilities.Caps;

namespace OpenSim.Capabilities.Handlers
{
    public class FetchInvDescHandler 
    {
        private static readonly ILog m_log =
            LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

        private IInventoryService m_InventoryService;
        private ILibraryService m_LibraryService;
//        private object m_fetchLock = new Object();

        public FetchInvDescHandler(IInventoryService invService, ILibraryService libService) 
        {
            m_InventoryService = invService;
            m_LibraryService = libService;
        }

        public string FetchInventoryDescendentsRequest(string request, string path, string param, IOSHttpRequest httpRequest, IOSHttpResponse httpResponse)
        {
//            lock (m_fetchLock)
//            {
//                m_log.DebugFormat("[WEB FETCH INV DESC HANDLER]: Received request {0}", request);
    
                // nasty temporary hack here, the linden client falsely
                // identifies the uuid 00000000-0000-0000-0000-000000000000
                // as a string which breaks us
                //
                // correctly mark it as a uuid
                //
                request = request.Replace("<string>00000000-0000-0000-0000-000000000000</string>", "<uuid>00000000-0000-0000-0000-000000000000</uuid>");
    
                // another hack <integer>1</integer> results in a
                // System.ArgumentException: Object type System.Int32 cannot
                // be converted to target type: System.Boolean
                //
                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("[WEB FETCH INV DESC HANDLER]: Fetch error: {0}{1}" + e.Message, e.StackTrace);
                    m_log.Error("Request: " + request);
                }
    
                ArrayList foldersrequested = (ArrayList)hash["folders"];
    
                string response = "";

                for (int i = 0; i < foldersrequested.Count; i++)
                {
                    string inventoryitemstr = "";
                    Hashtable inventoryhash = (Hashtable)foldersrequested[i];

                    LLSDFetchInventoryDescendents llsdRequest = new LLSDFetchInventoryDescendents();

                    try
                    {
                        LLSDHelpers.DeserialiseOSDMap(inventoryhash, llsdRequest);
                    }
                    catch (Exception e)
                    {
                        m_log.Debug("[WEB FETCH INV DESC HANDLER]: caught exception doing OSD deserialize" + e);
                    }
                    LLSDInventoryDescendents reply = FetchInventoryReply(llsdRequest);

                    inventoryitemstr = LLSDHelpers.SerialiseLLSDReply(reply);
                    inventoryitemstr = inventoryitemstr.Replace("<llsd><map><key>folders</key><array>", "");
                    inventoryitemstr = inventoryitemstr.Replace("</array></map></llsd>", "");

                    response += inventoryitemstr;
                }

                if (response.Length == 0)
                {
                    // Ter-guess: If requests fail a lot, the client seems to stop requesting descendants.
                    // Therefore, I'm concluding that the client only has so many threads available to do requests
                    // and when a thread stalls..   is stays stalled.
                    // Therefore we need to return something valid
                    response = "<llsd><map><key>folders</key><array /></map></llsd>";
                }
                else
                {
                    response = "<llsd><map><key>folders</key><array>" + response + "</array></map></llsd>";
                }

//                m_log.DebugFormat("[WEB FETCH INV DESC HANDLER]: Replying to CAPS fetch inventory request");
                //m_log.Debug("[WEB FETCH INV DESC HANDLER] "+response);

                return response;

//            }
        }

        /// <summary>
        /// Construct an LLSD reply packet to a CAPS inventory request
        /// </summary>
        /// <param name="invFetch"></param>
        /// <returns></returns>
        private LLSDInventoryDescendents FetchInventoryReply(LLSDFetchInventoryDescendents invFetch)
        {
            LLSDInventoryDescendents reply = new LLSDInventoryDescendents();
            LLSDInventoryFolderContents contents = new LLSDInventoryFolderContents();
            contents.agent_id = invFetch.owner_id;
            contents.owner_id = invFetch.owner_id;
            contents.folder_id = invFetch.folder_id;

            reply.folders.Array.Add(contents);
            InventoryCollection inv = new InventoryCollection();
            inv.Folders = new List<InventoryFolderBase>();
            inv.Items = new List<InventoryItemBase>();
            int version = 0;
            int descendents = 0;

            inv
                = Fetch(
                    invFetch.owner_id, invFetch.folder_id, invFetch.owner_id,
                    invFetch.fetch_folders, invFetch.fetch_items, invFetch.sort_order, out version, out descendents);

            if (inv != null && inv.Folders != null)
            {
                foreach (InventoryFolderBase invFolder in inv.Folders)
                {
                    contents.categories.Array.Add(ConvertInventoryFolder(invFolder));
                }

                descendents += inv.Folders.Count;
            }

            if (inv != null && inv.Items != null)
            {
                foreach (InventoryItemBase invItem in inv.Items)
                {
                    contents.items.Array.Add(ConvertInventoryItem(invItem));
                }
            }

            contents.descendents = descendents;
            contents.version = version;

//            m_log.DebugFormat(
//                "[WEB FETCH INV DESC HANDLER]: Replying to request for folder {0} (fetch items {1}, fetch folders {2}) with {3} items and {4} folders for agent {5}",
//                invFetch.folder_id,
//                invFetch.fetch_items,
//                invFetch.fetch_folders,
//                contents.items.Array.Count,
//                contents.categories.Array.Count,
//                invFetch.owner_id);

            return reply;
        }

        /// <summary>
        /// Handle the caps inventory descendents fetch.
        /// </summary>
        /// <param name="agentID"></param>
        /// <param name="folderID"></param>
        /// <param name="ownerID"></param>
        /// <param name="fetchFolders"></param>
        /// <param name="fetchItems"></param>
        /// <param name="sortOrder"></param>
        /// <param name="version"></param>
        /// <returns>An empty InventoryCollection if the inventory look up failed</returns>
        private InventoryCollection Fetch(
            UUID agentID, UUID folderID, UUID ownerID,
            bool fetchFolders, bool fetchItems, int sortOrder, out int version, out int descendents)
        {
            //m_log.DebugFormat(
            //    "[WEB FETCH INV DESC HANDLER]: Fetching folders ({0}), items ({1}) from {2} for agent {3}",
            //    fetchFolders, fetchItems, folderID, agentID);

            // FIXME MAYBE: We're not handling sortOrder!

            version = 0;
            descendents = 0;

            InventoryFolderImpl fold;
            if (m_LibraryService != null && m_LibraryService.LibraryRootFolder != null && agentID == m_LibraryService.LibraryRootFolder.Owner)
            {
                if ((fold = m_LibraryService.LibraryRootFolder.FindFolder(folderID)) != null)
                {
                    InventoryCollection ret = new InventoryCollection();
                    ret.Folders = new List<InventoryFolderBase>();
                    ret.Items = fold.RequestListOfItems();
                    descendents = ret.Folders.Count + ret.Items.Count;

                    return ret;
                }
            }

            InventoryCollection contents = new InventoryCollection();

            if (folderID != UUID.Zero)
            {
                InventoryCollection fetchedContents = m_InventoryService.GetFolderContent(agentID, folderID);

                if (fetchedContents == null)
                {
                    m_log.WarnFormat("[WEB FETCH INV DESC HANDLER]: Could not get contents of folder {0} for user {1}", folderID, agentID);
                    return contents;
                }

                contents = fetchedContents;
                InventoryFolderBase containingFolder = new InventoryFolderBase();
                containingFolder.ID = folderID;
                containingFolder.Owner = agentID;
                containingFolder = m_InventoryService.GetFolder(containingFolder);

                if (containingFolder != null)
                {
//                    m_log.DebugFormat(
//                        "[WEB FETCH INV DESC HANDLER]: Retrieved folder {0} {1} for agent id {2}",
//                        containingFolder.Name, containingFolder.ID, agentID);

                    version = containingFolder.Version;

                    if (fetchItems)
                    {
                        List<InventoryItemBase> itemsToReturn = contents.Items;
                        List<InventoryItemBase> originalItems = new List<InventoryItemBase>(itemsToReturn);

                        // descendents must only include the links, not the linked items we add
                        descendents = originalItems.Count;

                        // Add target items for links in this folder before the links themselves.
                        foreach (InventoryItemBase item in originalItems)
                        {
                            if (item.AssetType == (int)AssetType.Link)
                            {
                                InventoryItemBase linkedItem = m_InventoryService.GetItem(new InventoryItemBase(item.AssetID));

                                // Take care of genuinely broken links where the target doesn't exist
                                // HACK: Also, don't follow up links that just point to other links.  In theory this is legitimate,
                                // but no viewer has been observed to set these up and this is the lazy way of avoiding cycles
                                // rather than having to keep track of every folder requested in the recursion.
                                if (linkedItem != null && linkedItem.AssetType != (int)AssetType.Link)
                                    itemsToReturn.Insert(0, linkedItem);
                            }
                        }

                        // Now scan for folder links and insert the items they target and those links at the head of the return data
                        foreach (InventoryItemBase item in originalItems)
                        {
                            if (item.AssetType == (int)AssetType.LinkFolder)
                            {
                                InventoryCollection linkedFolderContents = m_InventoryService.GetFolderContent(ownerID, item.AssetID);
                                List<InventoryItemBase> links = linkedFolderContents.Items;

                                itemsToReturn.InsertRange(0, links);

                                foreach (InventoryItemBase link in linkedFolderContents.Items)
                                {
                                    // Take care of genuinely broken links where the target doesn't exist
                                    // HACK: Also, don't follow up links that just point to other links.  In theory this is legitimate,
                                    // but no viewer has been observed to set these up and this is the lazy way of avoiding cycles
                                    // rather than having to keep track of every folder requested in the recursion.
                                    if (link != null)
                                    {
//                                        m_log.DebugFormat(
//                                            "[WEB FETCH INV DESC HANDLER]: Adding item {0} {1} from folder {2} linked from {3}",
//                                            link.Name, (AssetType)link.AssetType, item.AssetID, containingFolder.Name);

                                        InventoryItemBase linkedItem
                                            = m_InventoryService.GetItem(new InventoryItemBase(link.AssetID));

                                        if (linkedItem != null)
                                            itemsToReturn.Insert(0, linkedItem);
                                    }
                                }
                            }
                        }
                    }

//                    foreach (InventoryItemBase item in contents.Items)
//                    {
//                        m_log.DebugFormat(
//                            "[WEB FETCH INV DESC HANDLER]: Returning item {0}, type {1}, parent {2} in {3} {4}",
//                            item.Name, (AssetType)item.AssetType, item.Folder, containingFolder.Name, containingFolder.ID);
//                    }

                    // =====

//
//                        foreach (InventoryItemBase linkedItem in linkedItemsToAdd)
//                        {
//                            m_log.DebugFormat(
//                                "[WEB FETCH INV DESC HANDLER]: Inserted linked item {0} for link in folder {1} for agent {2}",
//                                linkedItem.Name, folderID, agentID);
//
//                            contents.Items.Add(linkedItem);
//                        }
//
//                        // If the folder requested contains links, then we need to send those folders first, otherwise the links
//                        // will be broken in the viewer.
//                        HashSet<UUID> linkedItemFolderIdsToSend = new HashSet<UUID>();
//                        foreach (InventoryItemBase item in contents.Items)
//                        {
//                            if (item.AssetType == (int)AssetType.Link)
//                            {
//                                InventoryItemBase linkedItem = m_InventoryService.GetItem(new InventoryItemBase(item.AssetID));
//
//                                // Take care of genuinely broken links where the target doesn't exist
//                                // HACK: Also, don't follow up links that just point to other links.  In theory this is legitimate,
//                                // but no viewer has been observed to set these up and this is the lazy way of avoiding cycles
//                                // rather than having to keep track of every folder requested in the recursion.
//                                if (linkedItem != null && linkedItem.AssetType != (int)AssetType.Link)
//                                {
//                                    // We don't need to send the folder if source and destination of the link are in the same
//                                    // folder.
//                                    if (linkedItem.Folder != containingFolder.ID)
//                                        linkedItemFolderIdsToSend.Add(linkedItem.Folder);
//                                }
//                            }
//                        }
//    
//                        foreach (UUID linkedItemFolderId in linkedItemFolderIdsToSend)
//                        {
//                            m_log.DebugFormat(
//                                "[WEB FETCH INV DESC HANDLER]: Recursively fetching folder {0} linked by item in folder {1} for agent {2}",
//                                linkedItemFolderId, folderID, agentID);
//
//                            int dummyVersion;
//                            InventoryCollection linkedCollection
//                                = Fetch(
//                                    agentID, linkedItemFolderId, ownerID, fetchFolders, fetchItems, sortOrder, out dummyVersion);
//
//                            InventoryFolderBase linkedFolder = new InventoryFolderBase(linkedItemFolderId);
//                            linkedFolder.Owner = agentID;
//                            linkedFolder = m_InventoryService.GetFolder(linkedFolder);
//
////                            contents.Folders.AddRange(linkedCollection.Folders);
//
//                            contents.Folders.Add(linkedFolder);
//                            contents.Items.AddRange(linkedCollection.Items);
//                        }
//                    }
                }
            }
            else
            {
                // Lost items don't really need a version
                version = 1;
            }

            return contents;

        }
        /// <summary>
        /// Convert an internal inventory folder object into an LLSD object.
        /// </summary>
        /// <param name="invFolder"></param>
        /// <returns></returns>
        private LLSDInventoryFolder ConvertInventoryFolder(InventoryFolderBase invFolder)
        {
            LLSDInventoryFolder llsdFolder = new LLSDInventoryFolder();
            llsdFolder.folder_id = invFolder.ID;
            llsdFolder.parent_id = invFolder.ParentID;
            llsdFolder.name = invFolder.Name;
            llsdFolder.type = invFolder.Type;
            llsdFolder.preferred_type = -1;

            return llsdFolder;
        }

        /// <summary>
        /// Convert an internal inventory item object into an LLSD object.
        /// </summary>
        /// <param name="invItem"></param>
        /// <returns></returns>
        private LLSDInventoryItem ConvertInventoryItem(InventoryItemBase invItem)
        {
            LLSDInventoryItem llsdItem = new LLSDInventoryItem();
            llsdItem.asset_id = invItem.AssetID;
            llsdItem.created_at = invItem.CreationDate;
            llsdItem.desc = invItem.Description;
            llsdItem.flags = (int)invItem.Flags;
            llsdItem.item_id = invItem.ID;
            llsdItem.name = invItem.Name;
            llsdItem.parent_id = invItem.Folder;
            llsdItem.type = invItem.AssetType;
            llsdItem.inv_type = invItem.InvType;

            llsdItem.permissions = new LLSDPermissions();
            llsdItem.permissions.creator_id = invItem.CreatorIdAsUuid;
            llsdItem.permissions.base_mask = (int)invItem.CurrentPermissions;
            llsdItem.permissions.everyone_mask = (int)invItem.EveryOnePermissions;
            llsdItem.permissions.group_id = invItem.GroupID;
            llsdItem.permissions.group_mask = (int)invItem.GroupPermissions;
            llsdItem.permissions.is_owner_group = invItem.GroupOwned;
            llsdItem.permissions.next_owner_mask = (int)invItem.NextPermissions;
            llsdItem.permissions.owner_id = invItem.Owner;
            llsdItem.permissions.owner_mask = (int)invItem.CurrentPermissions;
            llsdItem.sale_info = new LLSDSaleInfo();
            llsdItem.sale_info.sale_price = invItem.SalePrice;
            llsdItem.sale_info.sale_type = invItem.SaleType;

            return llsdItem;
        }
    }
}