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

   1 //
   2 // System.Security.Policy.NetCodeGroup
   3 //
   4 // Authors:
   5 //      Jackson Harper (Jackson@LatitudeGeo.com)
   6 //      Sebastien Pouliot  <sebastien@ximian.com>
   7 //
   8 // (C) 2002 Jackson Harper, All rights reserved
   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.Collections;
  32 using System.Globalization;
  33
  34 namespace System.Security.Policy {
  35
  36         [Serializable]
  37         public sealed class NetCodeGroup : CodeGroup {
  38
  39 #if NET_2_0
  40                 public static readonly string AbsentOriginScheme = String.Empty;
  41                 public static readonly string AnyOtherOriginScheme = "*";
  42
  43                 private CodeGroupGrantScope _scope = CodeGroupGrantScope.Assembly;
  44                 private Hashtable _rules = new Hashtable ();
  45                 private int _hashcode;
  46 #endif
  47
  48                 public NetCodeGroup (IMembershipCondition condition)
  49                         : base (condition, null)
  50                 {
  51                 }
  52
  53                 // for PolicyLevel (to avoid validation duplication)
  54                 internal NetCodeGroup (SecurityElement e, PolicyLevel level)
  55                         : base (e, level)
  56                 {
  57                 }
  58
  59                 //
  60                 // Public Properties
  61                 //
  62
  63                 public override string AttributeString {
  64                         get { return null; }
  65                 }
  66
  67                 public override string MergeLogic {
  68                         get { return "Union"; }
  69                 }
  70
  71                 public override string PermissionSetName {
  72 #if NET_2_0
  73                         get { return "Same site Web"; }
  74 #else
  75                         get { return "Same site Web."; }
  76 #endif
  77                 }
  78
  79 #if NET_2_0
  80                 public CodeGroupGrantScope Scope {
  81                         get { return _scope; }
  82                         set { _scope = value; }
  83                 }
  84 #endif
  85
  86                 //
  87                 // Public Methods
  88                 //
  89
  90 #if NET_2_0
  91                 [MonoTODO ("missing validations")]
  92                 public void AddConnectAccess (string originScheme, CodeConnectAccess connectAccess)
  93                 {
  94                         if (originScheme == null)
  95                                 throw new ArgumentException ("originScheme");
  96
  97                         // TODO - invalid characters in originScheme
  98                         if ((originScheme == AbsentOriginScheme) && (connectAccess.Scheme == CodeConnectAccess.OriginScheme)) {
  99                                 throw new ArgumentOutOfRangeException ("connectAccess", Locale.GetText (
 100                                         "Schema == CodeConnectAccess.OriginScheme"));
 101                         }
 102
 103                         if (_rules.ContainsKey (originScheme)) {
 104                                 // NULL has no effect
 105                                 if (connectAccess != null) {
 106                                         CodeConnectAccess[] existing = (CodeConnectAccess[]) _rules [originScheme];
 107                                         CodeConnectAccess[] array = new CodeConnectAccess [existing.Length + 1];
 108                                         Array.Copy (existing, 0, array, 0, existing.Length);
 109                                         array [existing.Length] = connectAccess;
 110                                         _rules [originScheme] = array;
 111                                 }
 112                         }
 113                         else {
 114                                 CodeConnectAccess[] array = new CodeConnectAccess [1];
 115                                 array [0] = connectAccess;
 116                                 _rules.Add (originScheme, array);
 117                                 // add null to prevent access
 118                         }
 119                 }
 120 #endif
 121
 122                 public override CodeGroup Copy ()
 123                 {
 124                         NetCodeGroup copy = new NetCodeGroup (MembershipCondition);
 125                         copy.Name = Name;
 126                         copy.Description = Description;
 127                         copy.PolicyStatement = PolicyStatement;
 128
 129                         foreach (CodeGroup child in Children) {
 130                                 copy.AddChild (child.Copy ());  // deep copy
 131                         }
 132                         return copy;
 133                 }
 134
 135 #if NET_2_0
 136                 private bool Equals (CodeConnectAccess[] rules1, CodeConnectAccess[] rules2)
 137                 {
 138                         for (int i=0; i < rules1.Length; i++) {
 139                                 bool found = false;
 140                                 for (int j=0; j < rules2.Length; j++) {
 141                                         if (rules1 [i].Equals (rules2 [j])) {
 142                                                 found = true;
 143                                                 break;
 144                                         }
 145                                 }
 146                                 if (!found)
 147                                         return false;
 148                         }
 149                         return true;
 150                 }
 151
 152                 public override bool Equals (object o)
 153                 {
 154                         if (!base.Equals (o))
 155                                 return false;
 156                         NetCodeGroup ncg = (o as NetCodeGroup);
 157                         if (ncg == null)
 158                                 return false;
 159
 160                         // check rules
 161                         foreach (DictionaryEntry de in _rules) {
 162                                 bool found = false;
 163                                 CodeConnectAccess[] ccas = (CodeConnectAccess[]) ncg._rules [de.Key];
 164                                 if (ccas != null)
 165                                         found = Equals ((CodeConnectAccess[]) de.Value, ccas);
 166                                 else
 167                                         found = (de.Value == null);
 168
 169                                 if (!found)
 170                                         return false;
 171                         }
 172                         return true;
 173                 }
 174
 175                 public DictionaryEntry[] GetConnectAccessRules ()
 176                 {
 177                         DictionaryEntry[] result = new DictionaryEntry [_rules.Count];
 178                         _rules.CopyTo (result, 0);
 179                         return result;
 180                 }
 181
 182                 public override int GetHashCode ()
 183                 {
 184                         if (_hashcode == 0) {
 185                                 _hashcode = base.GetHashCode ();
 186                                 foreach (DictionaryEntry de in _rules) {
 187                                         CodeConnectAccess[] ccas = (CodeConnectAccess[]) de.Value;
 188                                         if (ccas != null) {
 189                                                 foreach (CodeConnectAccess cca in ccas) {
 190                                                         _hashcode ^= cca.GetHashCode ();
 191                                                 }
 192                                         }
 193                                 }
 194                         }
 195                         return _hashcode;
 196                 }
 197 #endif
 198
 199                 public override PolicyStatement Resolve (Evidence evidence)
 200                 {
 201                         if (evidence == null)
 202                                 throw new ArgumentNullException ("evidence");
 203
 204                         if (!MembershipCondition.Check (evidence))
 205                                 return null;
 206
 207                         PolicyStatement pst = this.PolicyStatement.Copy ();
 208
 209                         if (this.Children.Count > 0) {
 210                                 foreach (CodeGroup child_cg in this.Children) {
 211                                         PolicyStatement child_pst = child_cg.Resolve (evidence);
 212                                         if (child_pst != null) {
 213                                                 foreach (IPermission perm in child_pst.PermissionSet) {
 214                                                         pst.PermissionSet.AddPermission (perm);
 215                                                 }
 216                                         }
 217                                 }
 218                         }
 219                         return pst;
 220                 }
 221
 222 #if NET_2_0
 223                 public void ResetConnectAccess ()
 224                 {
 225                         _rules.Clear ();
 226                 }
 227 #endif
 228
 229                 public override CodeGroup ResolveMatchingCodeGroups (Evidence evidence)
 230                 {
 231                         if (evidence == null)
 232                                 throw new ArgumentNullException ("evidence");
 233
 234                         CodeGroup return_group = null;
 235                         if (MembershipCondition.Check (evidence)) {
 236                                 return_group = Copy ();
 237
 238                                 foreach (CodeGroup child_group in Children) {
 239                                         CodeGroup matching =
 240                                                 child_group.ResolveMatchingCodeGroups (evidence);
 241                                         if (matching == null)
 242                                                 continue;
 243                                         return_group.AddChild (matching);
 244                                 }
 245                         }
 246
 247                         return return_group;
 248                 }
 249
 250 #if NET_2_0
 251                 [MonoTODO]
 252                 protected override void CreateXml (SecurityElement element, PolicyLevel level)
 253                 {
 254                         base.CreateXml (element, level);
 255                 }
 256
 257                 [MonoTODO]
 258                 protected override void ParseXml (SecurityElement e, PolicyLevel level)
 259                 {
 260                         base.ParseXml (e, level);
 261                 }
 262 #endif
 263         }
 264 }
 265