mcs/class/referencesource/System.Web/Util/Permission.cs

   1 //------------------------------------------------------------------------------
   2 // <copyright file="Permission.cs" company="Microsoft">
   3 //     Copyright (c) Microsoft Corporation.  All rights reserved.
   4 // </copyright>
   5 //------------------------------------------------------------------------------
   6
   7 /*
   8  *
   9  * Copyright (c) 1998-1999, Microsoft Corporation
  10  *
  11  */
  12
  13 namespace System.Web.Util {
  14     using System.Security.Permissions;
  15     using System.Security;
  16     using System.Data.SqlClient;
  17
  18     static class Permission {
  19         internal static bool HasSqlClientPermission() {
  20             NamedPermissionSet  permissionset = HttpRuntime.NamedPermissionSet;
  21
  22             // If we don't have a NamedPermissionSet, we're in full trust
  23             if (permissionset == null)
  24                 return true;
  25
  26             // Check that the user has unrestricted SqlClientPermission
  27             IPermission allowedPermission = permissionset.GetPermission(typeof(SqlClientPermission));
  28
  29             if (allowedPermission == null) {
  30                 return false;
  31             }
  32
  33             IPermission askedPermission = null;
  34             try {
  35                 askedPermission = new SqlClientPermission(PermissionState.Unrestricted);
  36             }
  37             catch {
  38                 return false;
  39             }
  40
  41             return askedPermission.IsSubsetOf(allowedPermission);
  42         }
  43
  44     }
  45 }