mcs/class/System/System.Net/WebPermissionAttribute.cs

   1 //
   2 // System.Net.WebPermissionAttribute.cs
   3 //
   4 // Authors:
   5 //      Andreas Nahr (ClassDevelopment@A-SoftTech.com)
   6 //      Sebastien Pouliot  <sebastien@ximian.com>
   7 //
   8 // (C) 2003 Andreas Nahr
   9 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System.Security;
  32 using System.Security.Permissions;
  33
  34 namespace System.Net {
  35
  36         [AttributeUsage (AttributeTargets.Assembly | AttributeTargets.Class
  37                  | AttributeTargets.Struct | AttributeTargets.Constructor
  38                  | AttributeTargets.Method, AllowMultiple = true, Inherited = false)]
  39         [Serializable]
  40         public sealed class WebPermissionAttribute : CodeAccessSecurityAttribute {
  41
  42                 // Fields
  43                 object m_accept;
  44                 object m_connect;
  45
  46                 // Constructors
  47                 public WebPermissionAttribute (SecurityAction action)
  48                         : base (action)
  49                 {
  50                 }
  51
  52                 // Properties
  53
  54                 public string Accept {
  55                         get {
  56                                 if (m_accept == null)
  57                                         return null;
  58                                 return (m_accept as WebPermissionInfo).Info;
  59                         }
  60                         set {
  61                                 if (m_accept != null)
  62                                         AlreadySet ("Accept", "Accept");
  63
  64                                 m_accept = new WebPermissionInfo (WebPermissionInfoType.InfoString, value);
  65                         }
  66                 }
  67
  68                 public string AcceptPattern {
  69                         get {
  70                                 if (m_accept == null)
  71                                         return null;
  72                                 return (m_accept as WebPermissionInfo).Info;
  73                         }
  74                         set {
  75                                 if (m_accept != null)
  76                                         AlreadySet ("Accept", "AcceptPattern");
  77                                 if (value == null)
  78                                         throw new ArgumentNullException ("AcceptPattern");
  79
  80                                 m_accept = new WebPermissionInfo (WebPermissionInfoType.InfoUnexecutedRegex , value);
  81                         }
  82                 }
  83
  84                 public string Connect {
  85                         get {
  86                                 if (m_connect == null)
  87                                         return null;
  88                                 return (m_connect as WebPermissionInfo).Info;
  89                         }
  90                         set {
  91                                 if (m_connect != null)
  92                                         AlreadySet ("Connect", "Connect");
  93
  94                                 m_connect = new WebPermissionInfo (WebPermissionInfoType.InfoString, value);
  95                         }
  96                 }
  97
  98                 public string ConnectPattern {
  99                         get {
 100                                 if (m_connect == null)
 101                                         return null;
 102                                 return (m_connect as WebPermissionInfo).Info;
 103                         }
 104                         set {
 105                                 if (m_connect != null)
 106                                         AlreadySet ("Connect", "ConnectConnectPattern");
 107                                 if (value == null)
 108                                         throw new ArgumentNullException ("ConnectPattern");
 109
 110                                 m_connect = new WebPermissionInfo (WebPermissionInfoType.InfoUnexecutedRegex , value);
 111                         }
 112                 }
 113
 114                 // Methods
 115
 116                 public override IPermission CreatePermission ()
 117                 {
 118                         if (this.Unrestricted)
 119                                 return new WebPermission (PermissionState.Unrestricted);
 120
 121                         WebPermission newPermission = new WebPermission ();
 122                         if (m_accept != null) {
 123                                 newPermission.AddPermission (NetworkAccess.Accept, (WebPermissionInfo) m_accept);
 124                         }
 125                         if (m_connect != null) {
 126                                 newPermission.AddPermission (NetworkAccess.Connect, (WebPermissionInfo) m_connect);
 127                         }
 128                         return newPermission;
 129                 }
 130
 131                 // helpers
 132
 133                 internal void AlreadySet (string parameter, string property)
 134                 {
 135                         string msg = Locale.GetText ("The parameter '{0}' can be set only once.");
 136                         throw new ArgumentException (String.Format (msg, parameter), property);
 137                 }
 138         }
 139 }