SecurityManager.GetStandardSandbox(Evidence) Method

Definition

Namespace:

System.Security

Assembly:

System.Security.Permissions.dll

Source:

SecurityManager.cs

Gets a permission set that is safe to grant to an application that has the provided evidence.

public:
 static System::Security::PermissionSet ^ GetStandardSandbox(System::Security::Policy::Evidence ^ evidence);

public static System.Security.PermissionSet GetStandardSandbox (System.Security.Policy.Evidence evidence);

static member GetStandardSandbox : System.Security.Policy.Evidence -> System.Security.PermissionSet

Public Shared Function GetStandardSandbox (evidence As Evidence) As PermissionSet

Parameters

evidence

Evidence

The host evidence to match to a permission set.

Returns

PermissionSet

A permission set that can be used as a grant set for the application that has the provided evidence.

Exceptions

ArgumentNullException

evidence is null.

Examples

The following example shows how to use the GetStandardSandbox method to obtain the permission set for a sandboxed application. For more information about running an application in a sandbox, see How to: Run Partially Trusted Code in a Sandbox.

using System;
using System.Collections;
using System.Diagnostics;
using System.Security;
using System.Security.Permissions;
using System.Security.Policy;
using System.Reflection;
using System.IO;

namespace SimpleSandboxing
{
    class Program
    {
        static void Main(string[] args)
        {
            // Create the permission set to grant to other assemblies.
            // In this case we are granting the permissions found in the LocalIntranet zone.
            Evidence e = new Evidence();
            e.AddHostEvidence(new Zone(SecurityZone.Intranet));
            PermissionSet pset = SecurityManager.GetStandardSandbox(e);

            AppDomainSetup ads = new AppDomainSetup();
            // Identify the folder to use for the sandbox.
            ads.ApplicationBase = "C:\\Sandbox";
            // Copy the application to be executed to the sandbox.
            Directory.CreateDirectory("C:\\Sandbox");
            File.Copy("..\\..\\..\\HelloWorld\\bin\\debug\\HelloWorld.exe", "C:\\sandbox\\HelloWorld.exe", true);

            // Create the sandboxed domain.
            AppDomain sandbox = AppDomain.CreateDomain(
               "Sandboxed Domain",
               e,
               ads,
               pset,
               null);
            sandbox.ExecuteAssemblyByName("HelloWorld");
        }
    }
}

Imports System.Collections
Imports System.Diagnostics
Imports System.Security
Imports System.Security.Permissions
Imports System.Security.Policy
Imports System.Reflection
Imports System.IO



Class Program
    
    Shared Sub Main(ByVal args() As String) 
        ' Create the permission set to grant to other assemblies.
        ' In this case we are granting the permissions found in the LocalIntranet zone.
        Dim e As New Evidence()
        e.AddHostEvidence(New Zone(SecurityZone.Intranet))
        Dim pset As PermissionSet = SecurityManager.GetStandardSandbox(e)
        
        Dim ads As New AppDomainSetup()
        ' Identify the folder to use for the sandbox.
        ads.ApplicationBase = "C:\Sandbox"
        ' Copy the application to be executed to the sandbox.
        Directory.CreateDirectory("C:\Sandbox")
        File.Copy("..\..\..\HelloWorld\bin\debug\HelloWorld.exe", "C:\sandbox\HelloWorld.exe", True)
        
        ' Create the sandboxed domain.
        Dim sandbox As AppDomain = AppDomain.CreateDomain("Sandboxed Domain", e, ads, pset, Nothing)
        sandbox.ExecuteAssemblyByName("HelloWorld")
    
    End Sub
End Class

Remarks

Note

In the .NET Framework 4, the host evidence in evidence must contain System.Security.Policy.Zone evidence.

The following table shows the permission sets that are returned for each zone.

Zone	Permission set
MyComputer	FullTrust
Intranet	LocalIntranet
Trusted	Internet
Internet	Internet
Untrusted	None
NoZone	None

Other evidence, such as Url or Site, may be considered.

The returned permission set can be used by a sandbox to run the application. Note that this method does not specify policy, but helps a host to determine whether the permission set requested by an application is reasonable. This method can be used to map a zone to a sandbox.