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check if a parcelID is a encoded position data or a true UUID. This may fail, just reducing the odds.

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UbitUmarov
2016-12-23 14:23:07 +00:00
parent 0887be3c12
commit b6266c6a1d
1 changed files with 5 additions and 1 deletions
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6
OpenSim/Framework/Util.cs
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@@ -1725,12 +1725,16 @@ namespace OpenSim.Framework
return new UUID(bytes, 0);
}
public static void ParseFakeParcelID(UUID parcelID, out ulong regionHandle, out uint x, out uint y)
public static bool ParseFakeParcelID(UUID parcelID, out ulong regionHandle, out uint x, out uint y)
{
byte[] bytes = parcelID.GetBytes();
regionHandle = Utils.BytesToUInt64(bytes);
x = Utils.BytesToUInt(bytes, 8) & 0xffff;
y = Utils.BytesToUInt(bytes, 12) & 0xffff;
// validation may fail, just reducing the odds of using a real UUID as encoded parcel
return ( bytes[0] == 0 && bytes[4] == 0 && // handler x,y multiples of 256
bytes[9] < 64 && bytes[13] < 64 && // positions < 16km
bytes[14] == 0 && bytes[15] == 0);
}
public static void ParseFakeParcelID(UUID parcelID, out ulong regionHandle, out uint x, out uint y, out uint z)