mcs/class/corlib/System.Security.Policy/Site.cs

   1 //
   2 // System.Security.Policy.Site.cs
   3 //
   4 // Authors
   5 //      Duncan Mak (duncan@ximian.com)
   6 //      Sebastien Pouliot (spouliot@motus.com)
   7 //
   8 // (C) 2003 Ximian, Inc (http://www.ximian.com)
   9 // Portions (C) 2004 Motus Technologies Inc. (http://www.motus.com)
  10 //
  11
  12 using System;
  13 using System.Globalization;
  14 using System.Security.Permissions;
  15 using System.Security.Policy;
  16
  17 namespace System.Security.Policy {
  18
  19         [Serializable]
  20         public sealed class Site: IIdentityPermissionFactory, IBuiltInEvidence {
  21
  22                 internal string origin_site;
  23
  24                 public Site (string name)
  25                 {
  26                         if (name == null)
  27                                 throw new ArgumentNullException (Locale.GetText ("name is null"));
  28                         if (!IsValid (name))
  29                                 throw new ArgumentException (Locale.GetText ("name is not valid"));
  30
  31                         origin_site = name;
  32                 }
  33
  34                 public static Site CreateFromUrl (string url)
  35                 {
  36                         return new Site (url);
  37                 }
  38
  39                 public object Copy ()
  40                 {
  41                         return new Site (origin_site);
  42                 }
  43
  44                 public IPermission CreateIdentityPermission (Evidence evidence)
  45                 {
  46                         return new SiteIdentityPermission (origin_site);
  47                 }
  48
  49                 public override bool Equals (object o)
  50                 {
  51                         if (o is System.Security.Policy.Site) {
  52                                 return (String.Compare (((Site) o).Name, origin_site, true, CultureInfo.InvariantCulture) == 0);
  53                         }
  54                         return false;
  55                 }
  56
  57                 public override int GetHashCode ()
  58                 {
  59                         return origin_site.GetHashCode ();
  60                 }
  61
  62                 public override string ToString ()
  63                 {
  64                         SecurityElement element = new SecurityElement (typeof (System.Security.Policy.Site).FullName);
  65                         element.AddAttribute ("version", "1");
  66                         element.AddChild (new SecurityElement ("Name", origin_site));
  67                         return element.ToString ();
  68                 }
  69
  70                 // properties
  71
  72                 public string Name {
  73                         get { return origin_site; }
  74                 }
  75
  76                 // interface IBuiltInEvidence
  77
  78                 [MonoTODO]
  79                 int IBuiltInEvidence.GetRequiredSize (bool verbose)
  80                 {
  81                         return 0;
  82                 }
  83
  84                 [MonoTODO]
  85                 int IBuiltInEvidence.InitFromBuffer (char [] buffer, int position)
  86                 {
  87                         return 0;
  88                 }
  89
  90                 [MonoTODO]
  91                 int IBuiltInEvidence.OutputToBuffer (char [] buffer, int position, bool verbose)
  92                 {
  93                         return 0;
  94                 }
  95
  96                 // internals
  97
  98                 internal static bool IsValid (string name)
  99                 {
 100                         if (name == String.Empty)
 101                                 return false;
 102                         if ((name.Length == 1) && (name == "."))                // split would remove .
 103                                 return false;
 104
 105                         string [] parts = name.Split ('.');
 106                         for (int i=0; i < parts.Length; i++) {
 107                                 string part = parts [i];
 108                                 if ((i == 0) && (part == "*"))                  // * (only in first part)
 109                                         continue;
 110                                 foreach (char c in part) {
 111                                         int x = Convert.ToInt32 (c);
 112                                         bool result = ((x == 45)                // -
 113                                                 || (x >= 47 && x <= 57)         // /,0-9
 114                                                 || (x >= 64 && x <= 90)         // @,A-Z
 115                                                 || (x == 95)                    // _
 116                                                 || (x >= 97 && x <= 122));      // a-z
 117                                         if (!result)
 118                                                 return false;
 119                                 }
 120                         }
 121                         return true;
 122                 }
 123         }
 124 }