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From "Corey Trager (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENENET-169) Changes to make Lucene.NET compatible with ASP.NET Medium Trust Level, in hosting environments (like GoDaddy...)
Date Sat, 13 Jun 2009 22:27:07 GMT

    [ https://issues.apache.org/jira/browse/LUCENENET-169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12719189#action_12719189
] 

Corey Trager commented on LUCENENET-169:
----------------------------------------

I found what was causing the "Required permissions cannot be acquired" with Medium Trust.

You have to go to project settings, Build, and uncheck "Allow unsafe code".

Pretty simple to say, but took me about three hours of trial and error to narrow down which
svn revision the problem got introduced into, and then to narrow down the difference between
that revision and the prior.

Some links that I found after that fact:
http://www.codeplex.com/AntiXSS/Thread/View.aspx?ThreadId=44517
http://social.msdn.microsoft.com/Forums/en-US/clr/thread/77376b96-5512-4c38-8c07-a527e577ec3a







> Changes to make Lucene.NET compatible with ASP.NET  Medium Trust Level, in hosting environments
(like GoDaddy...)
> -----------------------------------------------------------------------------------------------------------------
>
>                 Key: LUCENENET-169
>                 URL: https://issues.apache.org/jira/browse/LUCENENET-169
>             Project: Lucene.Net
>          Issue Type: Improvement
>         Environment: ASP.NET
>            Reporter: Corey Trager
>         Attachments: FSDirectory.patch
>
>
> Microsoft has a configuration file for shared hosting for what they call "Medium Trust".
  There are a couple places in FSDirectory.cs  that violate the restrictions of Medium Trust,
but I coded workarounds, shown below.
> #1) 
> // Corey Trager, Oct 2008: Commented call to GetTempPath to workaround permission restrictions
at shared host.
> // LOCK_DIR isn't used anyway.
> public static readonly System.String LOCK_DIR = null; // SupportClass.AppSettings.Get("Lucene.Net.lockDir",
System.IO.Path.GetTempPath());
> #2)
> 		/// <summary>Returns an array of strings, one for each Lucene index file in the
directory. </summary>
> 		public override System.String[] List()
> 		{
> /* Changes by Corey Trager, Oct 2008, to workaround permission restrictions at shared
host */
>                System.IO.DirectoryInfo dir = new System.IO.DirectoryInfo(directory.FullName);
> 		System.IO.FileInfo[] files = dir.GetFiles();
>                 string[] list = new string[files.Length];
>                 for (int i = 0; i < files.Length; i++)
>                 {
>                     list[i] = files[i].Name;
>                 }
>                 return list;
> /* end of changes */
> //            System.String[] files = SupportClass.FileSupport.GetLuceneIndexFiles(directory.FullName,
IndexFileNameFilter.GetFilter());
> //            for (int i = 0; i < files.Length; i++)
> //            {
> //                System.IO.FileInfo fi = new System.IO.FileInfo(files[i]);
> //                files[i] = fi.Name;
> //            }
> //			  return files;
> 		}

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