Re: EventLogPermission via caspol.exe

From: Mark A. Richman (nospam_at_nospam.com)
Date: 04/29/05 

Date: Fri, 29 Apr 2005 14:00:15 -0400

Okay I resolved the RPC Server error by changing my WMI code in that assembly to use \\.\root\microsoftiisv2 instead of the netbios name. So good so far running off local disk now....

However, moving the code back over to UNC produces this exception again:

System.Security.SecurityException: Request for the permission of type 'System.Diagnostics.EventLogPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
   at System.Security.CodeAccessSecurityEngine.Check(PermissionToken permToken, CodeAccessPermission demand, StackCrawlMark& stackMark, Int32 checkFrames, Int32 unrestrictedOverride)
   at System.Security.CodeAccessSecurityEngine.Check(CodeAccessPermission cap, StackCrawlMark& stackMark)
   at System.Security.CodeAccessPermission.Demand()
   at System.Diagnostics.EventLog.SourceExists(String source, String machineName)
   at System.Diagnostics.EventLog.SourceExists(String source)
   at My Assembly's Code Here... 

-- 
Mark A. Richman
  "Mark A. Richman" <nospam@nospam.com> wrote in message news:unKluAOTFHA.2872@TK2MSFTNGP14.phx.gbl...
  I moved my code off UNC to local disk (under c:\inetpub\wwwroot\myapp). I can still browse the .asmx's, but when I invoke any methods, I now get this error instead: 
MyException: The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)
   at Foo.Bar.Baz.MyMethod() in c:\Inetpub\wwwroot\myapp\Foo\App_Code\Blah.cs:line 125
The offending line simply calls into my assembly that I'd like to be fully trusted. The event log contains this entry as well: "The RPC server is unavailable. (Exception from HRESULT: 0x800706BA)". This all works fine on my desktop machine from within Visual Studio 2005 Beta 2, so I know it's not my code, per se.
  Thanks again,
  Mark
    "Nicole Calinoiu" <calinoiu REMOVETHIS AT gmail DOT com> wrote in message news:uR67Uz%23SFHA.2916@TK2MSFTNGP15.phx.gbl...
    "Mark A. Richman" <nospam@nospam.com> wrote in message
    news:uT1dDyySFHA.2324@TK2MSFTNGP10.phx.gbl...
    > Nicole,
    >
    > Firstly, I am not attempting to log from ASP.NET directly, but from a
    > dependent assembly (albeit in the same process space - effectively the
    > same thing, I assume).
    Pretty much.  When EventLogPermission is demanded from within the .NET 
    Framework code you are calling, both the ASP.NET application and your 
    intermediary assembly must have the permission in order for the demand to 
    pass (at least under "usual" circumstances).
    > I am loading the web app and assemblies over UNC.
    > I am also impersonating a Domain Admin account in my web.config.
    That's extremely risky.  Are you doing this simply for troubleshooting 
    purposes, or do you plan to run the application under an admin account in 
    production?  If the latter, you may want to reconsider...
    > My trust
    > level is the default setting of "Full". I have tried various caspol
    > commands such as "caspol -m -fulltrust
    > \\mydomain\dfsroot\dfslink\myapp\bin\myassembly.dll" with no luck.
    Chances are good that you're not creating quite the right policy changes 
    when using caspol.  However, before attempting to troubleshoot your caspol 
    use, have you confirmed that the application runs as expected if the 
    assemblies reside on the local machine rather than elsewhere on the network?
    > The full stack trace is as follows (with real names obscured to protect
    > the innocent):
    >
    > System.Security.SecurityException: Request for the permission of type
    > 'System.Diagnostics.EventLogPermission, System, Version=2.0.0.0,
    > Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
       at System.Security.CodeAccessSecurityEngine.Check(PermissionToken
    permToken, CodeAccessPermission demand, StackCrawlMark& stackMark, Int32
    checkFrames, Int32 unrestrictedOverride)
       at System.Security.CodeAccessSecurityEngine.Check(CodeAccessPermission
    cap, StackCrawlMark& stackMark)
       at System.Security.CodeAccessPermission.Demand()
       at System.Diagnostics.EventLog.SourceExists(String source, String
    machineName)
       at System.Diagnostics.EventLog.SourceExists(String source)
       at MyException..ctor(Object oSource, Int32 nCode, String sMessage,
    Exception oInnerException, Boolean bLog)
       at MyAssembly.Foo() in
    \\mydomain\dfsroot\dfslink\myapp\App_Code\Blah.cs:line 125
    Thank you so much!
    -- 
    Mark A. Richman
      "Nicole Calinoiu" <calinoiu REMOVETHIS AT gmail DOT com> wrote in message
    news:u5d9fJySFHA.140@TK2MSFTNGP10.phx.gbl...
      Mark,
      What trust level is set for ASP.NET on your machine?  (You can check this
    is
      in the %WINDIR%\Microsoft.NET\Framework\v2.0.<build>\CONFIG\web.config
      file.)  If it's not full trust, then you'll need to ensure that both your
      ASP.NET application and your other assembly are granted the necessary
      EventLogPermission under the policy specified in the appropriate
      web_<level>trust.config file.
      That said, writing to the event log from a web application is not
      necessarily such a wonderful idea in the first place.  If feasible, it
    might
      be a better solution to log to a different target rather than adjusting
    your
      application's permissions to allow writing to the event log.
      HTH,
      Nicole
      "Mark A. Richman" <nospam@nospam.com> wrote in message
      news:eGzLovqSFHA.3640@TK2MSFTNGP14.phx.gbl...
      > I am getting an EventLogPermission exception when calling my assembly
    from
      > an ASP.NET 2.0 app. I tried setting the assembly to FullTrust via
      > caspol.exe, but I still get this exception. Any ideas? I am loading the
      > web app and assemblies over UNC.
      -- 
      MARK RICHMAN

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