public static List <UUID> GetEmbeddedAssetIDs(byte[] data)
{
if (data == null || data.Length < 79)
{
return(null);
}
string note = Util.UTF8.GetString(data);
if (String.IsNullOrWhiteSpace(note))
{
return(null);
}
// waste some time checking rigid versions
string tmpStr = note.Substring(0, 21);
if (!tmpStr.Equals("Linden text version 2"))
{
return(null);
}
tmpStr = note.Substring(24, 25);
if (!tmpStr.Equals("LLEmbeddedItems version 1"))
{
return(null);
}
tmpStr = note.Substring(52, 5);
if (!tmpStr.Equals("count"))
{
return(null);
}
int limit = note.Length - 57 - 2;
if (limit > 8)
{
limit = 8;
}
int indx = note.IndexOfAny(seps, 57, limit);
if (indx < 0)
{
return(null);
}
if (!int.TryParse(note.Substring(57, indx - 57), out int count))
{
return(null);
}
List <UUID> ids = new List <UUID>();
while (count > 0)
{
string valuestr;
UUID assetID = UUID.Zero;
indx = note.IndexOf('}', indx); // skip to end of permissions
if (indx < 0)
{
return(null);
}
int curindx = indx;
indx = getField(note, indx, "asset_id", false, out valuestr);
if (indx < 0)
{
indx = getField(note, curindx, "shadow_id", false, out valuestr);
if (indx < 0)
{
return(null);
}
if (!UUID.TryParse(valuestr, out assetID))
{
return(null);
}
assetID = deMoronize(assetID);
}
else
{
if (!UUID.TryParse(valuestr, out assetID))
{
return(null);
}
}
ids.Add(assetID);
indx = note.IndexOf('}', indx); // skip to end of sale
if (indx < 0)
{
return(null);
}
indx = getField(note, indx, "name", false, out valuestr); // avoid name contents
if (indx < 0)
{
return(null);
}
indx = getField(note, indx, "desc", false, out valuestr); // avoid desc contents
if (indx < 0)
{
return(null);
}
if (count > 1)
{
indx = note.IndexOf("ext char index", indx); // skip to next
if (indx < 0)
{
return(null);
}
}
--count;
}
indx = note.IndexOf("Text length", indx);
if (indx > 0)
{
indx += 14;
List <UUID> textIDs = Util.GetUUIDsOnString(ref note, indx, note.Length - indx);
if (textIDs.Count > 0)
{
ids.AddRange(textIDs);
}
}
if (ids.Count == 0)
{
return(null);
}
return(ids);
}