From c2392697628a76d8dcd7bee8fd94c4af3a36ff45 Mon Sep 17 00:00:00 2001
From: UbitUmarov <ajlduarte@sapo.pt>
Date: Sat, 8 Feb 2020 18:45:38 +0000
Subject: [PATCH] change uuids on scripts gather

---
 OpenSim/Framework/Util.cs                     | 124 ++++++++++++++++++
 .../Region/Framework/Scenes/UuidGatherer.cs   |   9 +-
 2 files changed, 128 insertions(+), 5 deletions(-)

diff --git a/OpenSim/Framework/Util.cs b/OpenSim/Framework/Util.cs
index cc5a16b384..fe95b8883d 100644
--- a/OpenSim/Framework/Util.cs
+++ b/OpenSim/Framework/Util.cs
@@ -843,6 +843,130 @@ namespace OpenSim.Framework
             return ids;
         }
 
+        [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.AggressiveInlining)]
+        static bool IsHexa(byte c)
+        {
+            if (c >= '0' && c <= '9')
+                return true;
+            if (c >= 'a' && c <= 'f')
+                return true;
+            if (c >= 'A' && c <= 'F')
+                return true;
+
+            return false;
+        }
+
+        public static List<UUID> GetUUIDsOnData(byte[] s, int indx, int len)
+        {
+            var ids = new List<UUID>();
+
+            int endA = indx + len;
+            if (endA > s.Length)
+                endA = s.Length;
+            if (endA - indx < 36)
+                return ids;
+
+            int endB = endA - 26;
+            endA -= 35;
+
+            int idbase;
+            int next;
+            int retry;
+
+            while (indx < endA)
+            {
+                for (; indx < endA; ++indx)
+                {
+                    if (IsHexa(s[indx]))
+                        break;
+                }
+                if (indx == endA)
+                    break;
+
+                idbase = indx;
+                for (; indx < endB; ++indx)
+                {
+                    if (!IsHexa(s[indx]))
+                        break;
+                    if (indx - idbase >= 8)
+                        ++idbase;
+                }
+
+                if (s[indx] != '-')
+                    continue;
+
+                ++indx;
+                retry = indx;
+                next = indx + 4;
+                for (; indx < next; ++indx)
+                {
+                    if (!IsHexa(s[indx]))
+                        break;
+                }
+                if (indx != next)
+                    continue;
+
+                if (s[indx] != '-')
+                {
+                    indx = retry;
+                    continue;
+                }
+
+                ++indx;
+                retry = indx;
+                next = indx + 4;
+                for (; indx < next; ++indx)
+                {
+                    if (!IsHexa(s[indx]))
+                        break;
+                }
+                if (indx != next)
+                    continue;
+
+                if (s[indx] != '-')
+                {
+                    indx = retry;
+                    continue;
+                }
+
+                ++indx;
+                retry = indx;
+                next = indx + 4;
+                for (; indx < next; ++indx)
+                {
+                    if (!IsHexa(s[indx]))
+                        break;
+                }
+                if (indx != next)
+                    continue;
+
+                if (s[indx] != '-')
+                {
+                    indx = retry;
+                    continue;
+                }
+                ++indx;
+                retry = indx;
+
+                next = indx + 12;
+                for (; indx < next; ++indx)
+                {
+                    if (!IsHexa(s[indx]))
+                        break;
+                }
+                if (indx != next)
+                    continue;
+
+                if (UUID.TryParse(Encoding.ASCII.GetString(s, idbase, 36), out UUID u))
+                {
+                    ids.Add(u);
+                }
+                ++indx;
+            }
+
+            return ids;
+        }
+
         /// <summary>
         /// Is the platform Windows?
         /// </summary>
diff --git a/OpenSim/Region/Framework/Scenes/UuidGatherer.cs b/OpenSim/Region/Framework/Scenes/UuidGatherer.cs
index de71ae7fe9..9f8b209345 100644
--- a/OpenSim/Region/Framework/Scenes/UuidGatherer.cs
+++ b/OpenSim/Region/Framework/Scenes/UuidGatherer.cs
@@ -558,7 +558,7 @@ namespace OpenSim.Region.Framework.Scenes
                 }
                 else if ((sbyte)AssetType.LSLText == assetType)
                 {
-                    RecordTextEmbeddedAssetUuids(assetBase);
+                    RecordEmbeddedAssetDataUuids(assetBase);
                 }
                 else if ((sbyte)OpenSimAssetType.Material == assetType)
                 {
@@ -716,15 +716,14 @@ namespace OpenSim.Region.Framework.Scenes
         /// Record the asset uuids embedded within the given text (e.g. a script).
         /// </summary>
         /// <param name="textAsset"></param>
-        private void RecordTextEmbeddedAssetUuids(AssetBase textAsset)
+        private void RecordEmbeddedAssetDataUuids(AssetBase textAsset)
         {
             // m_log.DebugFormat("[ASSET GATHERER]: Getting assets for uuid references in asset {0}", embeddingAssetId);
 
-            string text = Utils.BytesToString(textAsset.Data);
-            if(text.Length < 36)
+            if(textAsset.Data.Length < 36)
                 return;
 
-            List<UUID> ids = Util.GetUUIDsOnString(ref text, 0, text.Length);
+            List<UUID> ids = Util.GetUUIDsOnData(textAsset.Data, 0, textAsset.Data.Length);
             if (ids == null || ids.Count == 0)
                 return;