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From Christopher Currens <currens.ch...@gmail.com>
Subject Re: Lucene.Net 3.0.3 and medium trust
Date Tue, 14 Aug 2012 15:21:48 GMT
It must be something we've missed, as we want to target medium trust
locations in the future.  I can't think of anything off the top of my
head that would require medium trust, though, let alone unmanaged
code.  I'll dive into this.


Thanks,
Christopher

On Mon, Aug 13, 2012 at 10:01 PM, Simon Svensson <sisve@devhost.se> wrote:
> Hi,
>
> I'm having trouble upgrading a web application running under medium trust
> from 2.9.4 to 3.0.3. Code that previously worked now throws a
> SecurityException.
>
> [SecurityException: Request for the permission of type
> 'System.Security.Permissions.SecurityPermission, mscorlib, Version=4.0.0.0,
> Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.]
>    Lucene.Net.Support.WeakKey`1..ctor(T key) +0
>    Lucene.Net.Support.WeakDictionary`2.get_Item(TKey key) +113
>    Lucene.Net.Util.DefaultAttributeFactory.GetClassForInterface() +178
>    Lucene.Net.Util.DefaultAttributeFactory.CreateAttributeInstance() +95
>    Lucene.Net.Util.AttributeSource.AddAttribute() +375
>    Lucene.Net.Analysis.CharTokenizer..ctor(TextReader input) +126
>    Lucene.Net.Analysis.WhitespaceTokenizer..ctor(TextReader in) +37
>
>
> The DefaultAttributeFactory, via WeakReference, requires
> SecurityPermissionFlag.UnmanagedCode which is not present under medium
> trust. There's an AttributeFactory.DEFAULT_ATTRIBUTE_FACTORY which I could
> to replace the DefaultAttributeFactory, but it's readonly. I'm rewriting my
> code to call the constructor overload (on tokenizers) accepting an
> AttributeFactory, but this means that I cannot use any existing Analyzer
> since they don't provide an extension points to change the AttributeFactory.
>
> Is medium trust [using default classes] dropped in 3.0.3, or is this
> something we've missed?
>
> // Simon

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