RE: Trying to run in partial trust (getting a PolicyException)

Hi;

Ok, that makes sense. To keep this simple, can you help me figure out this
one and then I think I can take it from there. It says I need:
<IPermission version="1"
class="System.Security.Permissions.FileIOPermission, mscorlib,
Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
Unrestricted="true" />

The library does have file calls - but no where do I say that it must be
able to read/write anywhere. And it is easy to use the library with no file
I/O. How do I set it so that it does not require this permission?

I thought by not setting any requirements all permissions were optional, not
demanded by my dll.

--
thanks - dave
david_at_windward_dot_net
http://www.windwardreports.com

Cubicle Wars - http://www.windwardreports.com/film.htm




"Steven Cheng[MSFT]" wrote:

Thanks for your reply Dave,

This policy file is very informative for analyzie the CAS permission issue
here.

From the policy file ,you can get that the main ASP.NET specific
permissions are defined in the following permissionSet:

==========================
<PermissionSet class="NamedPermissionSet" version="1" Name="ASP.Net">
<IPermission class="AspNetHostingPermission" version="1"
Level="Medium" />
<IPermission class="ConfigurationPermission" version="1"
Unrestricted="true" />
<IPermission class="DnsPermission" version="1" Unrestricted="true" />
<IPermission class="EnvironmentPermission" version="1"
Read="TEMP;TMP;USERNAME;OS;COMPUTERNAME" />
<IPermission class="FileIOPermission" version="1" Read="$AppDir$"
Write="$AppDir$" Append="$AppDir$"
PathDiscovery="$AppDir$" />
<IPermission class="IsolatedStorageFilePermission" version="1"
Allowed="AssemblyIsolationByUser"
UserQuota="9223372036854775807" />
<IPermission class="OleDbPermission" version="1" Unrestricted="true"
/>
<IPermission class="PrintingPermission" version="1"
Level="DefaultPrinting" />
<IPermission class="ReflectionPermission" version="1"
Flags="ReflectionEmit, TypeInformation,
MemberAccess" />
<IPermission class="SecurityPermission" version="1"
Flags="Assertion, Execution,
ControlThread, ControlPrincipal, RemotingConfiguration" />
<IPermission class="SmtpPermission" version="1" Access="Connect" />
<IPermission class="SqlClientPermission" version="1"
Unrestricted="true" />
<IPermission class="WebPermission" version="1" Unrestricted="true" />
</PermissionSet>
==========================

you can find that there are serveral permission that is quite restricted,
e.g.

==============
<IPermission class="EnvironmentPermission" version="1"
Read="TEMP;TMP;USERNAME;OS;COMPUTERNAME" />
<IPermission class="FileIOPermission" version="1" Read="$AppDir$"
Write="$AppDir$" Append="$AppDir$"
PathDiscovery="$AppDir$" />

<IPermission class="SecurityPermission" version="1" Flags="Assertion,
Execution,
ControlThread, ControlPrincipal, RemotingConfiguration" />
==================

However, from the minmal permission set you checked through the
PermCalc.exe in former reply(as below), there have some items violate the
policy's permission set:

=====================
<Sandbox>
<PermissionSet version="1" class="System.Security.PermissionSet">
<IPermission version="1"
class="System.Security.Permissions.EnvironmentPermission, mscorlib,
Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
Unrestricted="true" />
<IPermission version="1"
class="System.Security.Permissions.FileIOPermission, mscorlib,
Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
Unrestricted="true" />
<IPermission version="1"
class="System.Security.Permissions.ReflectionPermission, mscorlib,
Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
Flags="MemberAccess" />
<IPermission version="1"
class="System.Security.Permissions.RegistryPermission, mscorlib,
Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
Unrestricted="true" />
<IPermission version="1"
class="System.Security.Permissions.SecurityPermission, mscorlib,
Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
Flags="UnmanagedCode, Execution, ControlThread, ControlEvidence" />
<IPermission Window="SafeSubWindows" Clipboard="OwnClipboard"
version="1" class="System.Security.Permissions.UIPermission, mscorlib,
Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
<IPermission version="1"
class="System.Security.Permissions.KeyContainerPermission, mscorlib,
Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
Unrestricted="true" />
<IPermission version="1" class="System.Net.SocketPermission, System,
Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
Unrestricted="true" />
<IPermission version="1" class="System.Net.DnsPermission, System,
Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
Unrestricted="true" />
</PermissionSet>
</Sandbox>
=================================

I think this should be the problem here.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead



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