mcs/class/System/System.Security.Cryptography.X509Certificates/X509ExtensionCollection.cs

   1 //
   2 // System.Security.Cryptography.X509Certificates.X509ExtensionCollection
   3 //
   4 // Author:
   5 //      Sebastien Pouliot  <sebastien@ximian.com>
   6 //      Tim Coleman (tim@timcoleman.com)
   7 //
   8 // (C) 2003 Motus Technologies Inc. (http://www.motus.com)
   9 // Copyright (C) Tim Coleman, 2004
  10 // Copyright (C) 2004-2006 Novell Inc. (http://www.novell.com)
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 #if SECURITY_DEP
  33
  34 extern alias MonoSecurity;
  35
  36 using System.Collections;
  37 using Mono.Security;
  38 using MX = Mono.Security.X509;
  39
  40 namespace System.Security.Cryptography.X509Certificates {
  41
  42         public sealed class X509ExtensionCollection : ICollection, IEnumerable {
  43
  44                 static byte[] Empty = new byte [0];
  45                 private ArrayList _list;
  46
  47                 // constructors
  48
  49                 public X509ExtensionCollection ()
  50                 {
  51                         _list = new ArrayList ();
  52                 }
  53
  54                 internal X509ExtensionCollection (MonoSecurity::Mono.Security.X509.X509Certificate cert)
  55                 {
  56                         _list = new ArrayList (cert.Extensions.Count);
  57                         if (cert.Extensions.Count == 0)
  58                                 return;
  59
  60                         foreach (MonoSecurity::Mono.Security.X509.X509Extension ext in cert.Extensions) {
  61                                 bool critical = ext.Critical;
  62                                 string oid = ext.Oid;
  63                                 byte[] raw_data = null;
  64                                 // extension data is embedded in an octet stream (4)
  65                                 var value = ext.Value;
  66                                 if ((value.Tag == 0x04) && (value.Count > 0))
  67                                         raw_data = value [0].GetBytes ();
  68
  69                                 X509Extension newt = null;
  70 #if FULL_AOT_RUNTIME
  71                                 // non-extensible
  72                                 switch (oid) {
  73                                 case "2.5.29.14":
  74                                         newt = new X509SubjectKeyIdentifierExtension (new AsnEncodedData (oid, raw_data), critical);
  75                                         break;
  76                                 case "2.5.29.15":
  77                                         newt = new X509KeyUsageExtension (new AsnEncodedData (oid, raw_data), critical);
  78                                         break;
  79                                 case "2.5.29.19":
  80                                         newt = new X509BasicConstraintsExtension (new AsnEncodedData (oid, raw_data), critical);
  81                                         break;
  82                                 case "2.5.29.37":
  83                                         newt = new X509EnhancedKeyUsageExtension (new AsnEncodedData (oid, raw_data), critical);
  84                                         break;
  85                                 }
  86 #else
  87                                 object[] parameters = new object [2];
  88                                 parameters [0] = new AsnEncodedData (oid, raw_data ?? Empty);
  89                                 parameters [1] = critical;
  90                                 newt = (X509Extension) CryptoConfig.CreateFromName (oid, parameters);
  91 #endif
  92                                 if (newt == null) {
  93                                         // not registred in CryptoConfig, using default
  94                                         newt = new X509Extension (oid, raw_data ?? Empty, critical);
  95                                 }
  96                                 _list.Add (newt);
  97                         }
  98                 }
  99
 100                 // properties
 101
 102                 public int Count {
 103                         get { return _list.Count; }
 104                 }
 105
 106                 public bool IsSynchronized {
 107                         get { return _list.IsSynchronized; }
 108                 }
 109
 110                 public object SyncRoot {
 111                         get { return this; }
 112                 }
 113
 114                 public X509Extension this [int index] {
 115                         get {
 116                                 if (index < 0)
 117                                         throw new InvalidOperationException ("index");
 118                                 return (X509Extension) _list [index];
 119                         }
 120                 }
 121
 122                 public X509Extension this [string oid] {
 123                         get {
 124                                 if (oid == null)
 125                                         throw new ArgumentNullException ("oid");
 126                                 if ((_list.Count == 0) || (oid.Length == 0))
 127                                         return null;
 128
 129                                 foreach (X509Extension extension in _list) {
 130                                         if (extension.Oid.Value.Equals (oid))
 131                                                 return extension;
 132                                 }
 133                                 return null;
 134                         }
 135                 }
 136
 137                 // methods
 138
 139                 public int Add (X509Extension extension)
 140                 {
 141                         if (extension == null)
 142                                 throw new ArgumentNullException ("extension");
 143
 144                         return _list.Add (extension);
 145                 }
 146
 147                 public void CopyTo (X509Extension[] array, int index)
 148                 {
 149                         if (array == null)
 150                                 throw new ArgumentNullException ("array");
 151                         if (index < 0)
 152                                 throw new ArgumentOutOfRangeException ("negative index");
 153                         if (index >= array.Length)
 154                                 throw new ArgumentOutOfRangeException ("index >= array.Length");
 155
 156                         _list.CopyTo (array, index);
 157                 }
 158
 159                 void ICollection.CopyTo (Array array, int index)
 160                 {
 161                         if (array == null)
 162                                 throw new ArgumentNullException ("array");
 163                         if (index < 0)
 164                                 throw new ArgumentOutOfRangeException ("negative index");
 165                         if (index >= array.Length)
 166                                 throw new ArgumentOutOfRangeException ("index >= array.Length");
 167
 168                         _list.CopyTo (array, index);
 169                 }
 170
 171                 public X509ExtensionEnumerator GetEnumerator ()
 172                 {
 173                         return new X509ExtensionEnumerator (_list);
 174                 }
 175
 176                 IEnumerator IEnumerable.GetEnumerator ()
 177                 {
 178                         return new X509ExtensionEnumerator (_list);
 179                 }
 180         }
 181 }
 182
 183 #endif