mantis 8651: change embedded decode a bit
UbitUmarov
parent
18f2e25b23
commit
4de3dc2860
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@ -600,164 +600,177 @@ namespace OpenSim.Framework
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return readNotecard(rawInput).Replace("\r", "").Split('\n');
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}
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private static int skipcontrol(string data, int indx)
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{
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while(indx < data.Length)
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{
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char c = data[indx];
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switch(c)
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{
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case '\n':
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case '\t':
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case '{':
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++indx;
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break;
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default:
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return indx;
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}
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}
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return -1;
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}
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static char[] seps = new char[] { '\t', '\n' };
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static char[] stringseps = new char[] { '|', '\t', '\n' };
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[System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.AggressiveInlining)]
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static int checkfield(string note, int start, string name, out int end)
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static byte[] moronize = new byte[16]
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{
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end = -1;
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60, 17, 94, 81, 4, 244, 82, 60, 159, 166, 152, 175, 241, 3, 71, 48
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};
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static int getField(string note, int start, string name, bool isString, out string value)
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{
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value = String.Empty;
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int end = -1;
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int limit = note.Length - start;
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if(limit > 64)
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if (limit > 64)
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limit = 64;
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int indx = note.IndexOf(name, start, limit);
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if (indx < 0)
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return -1;
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indx += name.Length;
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indx = skipcontrol(note, indx);
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if (indx < 0)
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return -1;
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end = note.IndexOfAny(seps, indx);
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indx += name.Length + 1; // eat \t
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limit = note.Length - indx - 2;
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if (limit > 129)
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limit = 129;
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if (isString)
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end = note.IndexOfAny(stringseps, indx, limit);
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else
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end = note.IndexOfAny(seps, indx, limit);
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if (end < 0)
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return -1;
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return indx;
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value = note.Substring(indx, end - indx);
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return end;
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}
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private static UUID deMoronize(UUID id)
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{
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byte[] data = new byte[16];
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id.ToBytes(data,0);
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for(int i = 0; i < 16; ++i)
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data[i] ^= moronize[i];
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return new UUID(data,0);
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}
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static char[] seps = new char[]{ '\t','\n'};
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public static InventoryItemBase GetEmbeddedItem(byte[] data, UUID itemID)
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{
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if(data == null || data.Length < 200)
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if(data == null || data.Length < 300)
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return null;
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string note = Util.UTF8.GetString(data);
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if (String.IsNullOrWhiteSpace(note))
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return null;
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int start = note.IndexOf(itemID.ToString());
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if (start < 0)
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// waste some time checking rigid versions
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string version = note.Substring(0,21);
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if (!version.Equals("Linden text version 2"))
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return null;
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int end;
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start = note.IndexOf("permissions", start, 100);
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if (start < 0)
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return null;
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start = checkfield(note, start, "base_mask", out end);
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if (start < 0)
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version = note.Substring(24, 25);
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if (!version.Equals("LLEmbeddedItems version 1"))
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return null;
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if (!uint.TryParse(note.Substring(start, end - start), NumberStyles.HexNumber, Culture.NumberFormatInfo, out uint basemask))
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int indx = note.IndexOf(itemID.ToString(), 100);
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if (indx < 0)
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return null;
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start = checkfield(note, end, "owner_mask", out end);
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if (start < 0)
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indx = note.IndexOf("permissions", indx, 100); // skip parentID
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if (indx < 0)
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return null;
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if (!uint.TryParse(note.Substring(start, end - start), NumberStyles.HexNumber, Culture.NumberFormatInfo, out uint ownermask))
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string valuestr;
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indx = getField(note, indx, "base_mask", false, out valuestr);
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if (indx < 0)
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return null;
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if (!uint.TryParse(valuestr, NumberStyles.HexNumber, Culture.NumberFormatInfo, out uint basemask))
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return null;
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start = checkfield(note, end, "group_mask", out end);
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if (start < 0)
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indx = getField(note, indx, "owner_mask", false, out valuestr);
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if (indx < 0)
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return null;
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if (!uint.TryParse(note.Substring(start, end - start), NumberStyles.HexNumber, Culture.NumberFormatInfo, out uint groupmask))
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if (!uint.TryParse(valuestr, NumberStyles.HexNumber, Culture.NumberFormatInfo, out uint ownermask))
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return null;
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start = checkfield(note, end, "everyone_mask", out end);
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if (start < 0)
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indx = getField(note, indx, "group_mask", false, out valuestr);
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if (indx < 0)
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return null;
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if (!uint.TryParse(note.Substring(start, end - start), NumberStyles.HexNumber, Culture.NumberFormatInfo, out uint everyonemask))
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if (!uint.TryParse(valuestr, NumberStyles.HexNumber, Culture.NumberFormatInfo, out uint groupmask))
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return null;
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start = checkfield(note, end, "next_owner_mask", out end);
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if (start < 0)
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indx = getField(note, indx, "everyone_mask", false, out valuestr);
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if (indx < 0)
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return null;
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if (!uint.TryParse(note.Substring(start, end - start), NumberStyles.HexNumber, Culture.NumberFormatInfo, out uint nextownermask))
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if (!uint.TryParse(valuestr, NumberStyles.HexNumber, Culture.NumberFormatInfo, out uint everyonemask))
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return null;
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start = checkfield(note, end, "creator_id", out end);
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if (start < 0)
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indx = getField(note, indx, "next_owner_mask", false, out valuestr);
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if (indx < 0)
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return null;
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if (!UUID.TryParse(note.Substring(start, end - start), out UUID creatorID))
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if (!uint.TryParse(valuestr, NumberStyles.HexNumber, Culture.NumberFormatInfo, out uint nextownermask))
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return null;
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start = checkfield(note, end, "owner_id", out end);
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if (start < 0)
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indx = getField(note, indx, "creator_id", false, out valuestr);
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if (indx < 0)
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return null;
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if (!UUID.TryParse(note.Substring(start, end - start), out UUID ownerID))
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if (!UUID.TryParse(valuestr, out UUID creatorID))
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return null;
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/*
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start = checkfield(note, end, "last_owner_id", out end);
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if (start < 0)
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indx = getField(note, indx, "owner_id", false, out valuestr);
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if (indx < 0)
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return null;
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if (!UUID.TryParse(note.Substring(start, end - start), out UUID lastownerID))
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if (!UUID.TryParse(valuestr, out UUID ownerID))
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return null;
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*/
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int limit = note.Length - end;
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int limit = note.Length - indx;
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if (limit > 120)
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limit = 120;
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end = note.IndexOf('}', end, limit); // last owner
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start = checkfield(note, end, "asset_id", out end);
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if (start < 0)
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return null;
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if (!UUID.TryParse(note.Substring(start, end - start), out UUID assetID))
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indx = note.IndexOf('}', indx, limit); // last owner
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if (indx < 0)
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return null;
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start = checkfield(note, end, "type", out end);
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if (start < 0)
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return null;
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string typestr = note.Substring(start, end - start);
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AssetType assetType = SLAssetName2Type(typestr);
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int curindx = indx;
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UUID assetID = UUID.Zero;
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indx = getField(note, indx, "asset_id", false, out valuestr);
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if (indx < 0)
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{
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indx = getField(note, indx, "shadow_id", false, out valuestr);
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if (indx < 0)
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return null;
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if (!UUID.TryParse(valuestr, out assetID))
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return null;
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assetID = deMoronize(assetID);
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}
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else
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{
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if (!UUID.TryParse(valuestr, out assetID))
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return null;
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}
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start = checkfield(note, end, "inv_type", out end);
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if (start < 0)
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return null;
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string inttypestr = note.Substring(start, end - start);
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FolderType invType = SLInvName2Type(inttypestr);
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start = checkfield(note, end, "flags", out end);
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if (start < 0)
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return null;
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if (!uint.TryParse(note.Substring(start, end - start), NumberStyles.HexNumber, Culture.NumberFormatInfo, out uint flags))
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indx = getField(note, indx, "type", false, out valuestr);
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if (indx < 0)
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return null;
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limit = note.Length - end;
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AssetType assetType = SLAssetName2Type(valuestr);
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indx = getField(note, indx, "inv_type", false, out valuestr);
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if (indx < 0)
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return null;
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FolderType invType = SLInvName2Type(valuestr);
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indx = getField(note, indx, "flags", false, out valuestr);
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if (indx < 0)
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return null;
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if (!uint.TryParse(valuestr, NumberStyles.HexNumber, Culture.NumberFormatInfo, out uint flags))
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return null;
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limit = note.Length - indx;
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if (limit > 120)
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limit = 120;
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end = note.IndexOf('}', end, limit); // skip sale
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start = checkfield(note, end, "name", out end);
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if (start < 0)
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indx = note.IndexOf('}', indx, limit); // skip sale
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if (indx < 0)
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return null;
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string name = note.Substring(start, end - start - 1);
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indx = getField(note, indx, "name", true, out valuestr);
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if (indx < 0)
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return null;
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start = checkfield(note, end, "desc", out end);
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if (start < 0)
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string name = valuestr;
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indx = getField(note, indx, "desc", true, out valuestr);
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if (indx < 0)
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return null;
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string desc = note.Substring(start, end - start - 1);
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/*
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start = checkfield(note, end, "creation_date", out end);
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if (start < 0)
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return null;
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if (!int.TryParse(note.Substring(start, end - start), out int creationdate))
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return null;
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*/
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string desc = valuestr;
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InventoryItemBase item = new InventoryItemBase();
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item.AssetID = assetID;
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