в 15:31, 26 мая 2010

2010-05-26T15:31:35Z

Admin: 1 версия

2010-05-26T12:11:48Z

1 версия

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==FileIOPermissionAccess.AllAccess==

<source lang="csharp">
using System;
using System.Collections.Generic;
using System.Text;
using System.Security;
using System.Security.Permissions;
class Program {
static void Main(string[] args) {
CodeAccessPermission permissionA = new FileIOPermission(FileIOPermissionAccess.AllAccess, @"C:\");
CodeAccessPermission permissionB = new FileIOPermission(FileIOPermissionAccess.Read, @"C:\temp");
if (permissionB.IsSubsetOf(permissionA)) {
Console.WriteLine("PermissionB is a subset of PermissionA");
} else {
Console.WriteLine("PermissionB is NOT a subset of PermissionA");
}
}
}

</source>

==FileIOPermissionAccess.Append==

<source lang="csharp">
using System;
using System.Collections.Generic;
using System.Text;
using System.Security;
using System.Security.Permissions;
using System.IO;
class Program {
static void Main(string[] args) {
CodeAccessPermission permission = new FileIOPermission(FileIOPermissionAccess.Append,@"C:\audit.txt");
permission.Deny();
AuditClass.Save("some data to audit");
CodeAccessPermission.RevertDeny();
}
}
class AuditClass {
public static void Save(string value) {
try {
FileIOPermission permission = new FileIOPermission(FileIOPermissionAccess.Append,@"C:\audit.txt");
permission.Assert();
FileStream stream = new FileStream(@"C:\audit.txt",FileMode.Append, FileAccess.Write);
CodeAccessPermission.RevertAssert();
Console.WriteLine("Data written to audit file");
} catch {
Console.WriteLine("Failed to write data to audit file");
}
}
}

</source>

==FileIOPermissionAccess.Read==

<source lang="csharp">

using System;
using System.Collections.Generic;
using System.IO;
using System.IO.IsolatedStorage;
using System.Net;
using System.Net.Sockets;
using System.Reflection;
using System.Security;
using System.Security.AccessControl;
using System.Security.Policy;
using System.Security.Permissions;
using System.Security.Principal;
using System.Text;
public class MainClass
{
public static void Main()
{
AppDomain sandboxAd;
Evidence ev = new Evidence();
ev.AddAssembly(Assembly.GetExecutingAssembly());
PermissionSet permSet = new PermissionSet(PermissionState.None);
permSet.AddPermission(new SecurityPermission(PermissionState.Unrestricted));
permSet.AddPermission(new FileIOPermission(PermissionState.Unrestricted));
sandboxAd = AppDomain.CreateDomain("Sandbox", ev, new AppDomainSetup(), permSet);
sandboxAd.DoCallBack(SecureOperationImperative);
}
private static void SecureOperationImperative()
{
FileIOPermission p = new FileIOPermission(FileIOPermissionAccess.Read, @"C:\");
p.Demand();
}
}

</source>

==FileIOPermissionAccess.Write==

<source lang="csharp">

using System;
using System.Net;
using System.Security.Permissions;

[assembly: ReflectionPermission(SecurityAction.RequestRefuse, Unrestricted = true)]
class MainClass
{
public static void Main()
{
FileIOPermission fileIOPerm = new FileIOPermission(FileIOPermissionAccess.Write, @"C:\Data");
fileIOPerm.Demand();
}
}

</source>

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Csharp/C Sharp by API/System.Security.Permissions/FileIOPermissionAccess - История изменений

в 15:31, 26 мая 2010

Admin: 1 версия