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 #if MONOTOUCH || MONODROID
  35 using Mono.Security;
  36 using MX = Mono.Security.X509;
  37 #else
  38 extern alias MonoSecurity;
  39 using MonoSecurity::Mono.Security;
  40 using MX = MonoSecurity::Mono.Security.X509;
  41 #endif
  42
  43 using System.Collections;
  44
  45 namespace System.Security.Cryptography.X509Certificates {
  46
  47         public sealed class X509ExtensionCollection : ICollection, IEnumerable {
  48
  49                 static byte[] Empty = new byte [0];
  50                 private ArrayList _list;
  51
  52                 // constructors
  53
  54                 public X509ExtensionCollection ()
  55                 {
  56                         _list = new ArrayList ();
  57                 }
  58
  59                 internal X509ExtensionCollection (MX.X509Certificate cert)
  60                 {
  61                         _list = new ArrayList (cert.Extensions.Count);
  62                         if (cert.Extensions.Count == 0)
  63                                 return;
  64
  65                         foreach (MX.X509Extension ext in cert.Extensions) {
  66                                 bool critical = ext.Critical;
  67                                 string oid = ext.Oid;
  68                                 byte[] raw_data = null;
  69                                 // extension data is embedded in an octet stream (4)
  70                                 var value = ext.Value;
  71                                 if ((value.Tag == 0x04) && (value.Count > 0))
  72                                         raw_data = value [0].GetBytes ();
  73
  74                                 X509Extension newt = null;
  75 #if FULL_AOT_RUNTIME
  76                                 // non-extensible
  77                                 switch (oid) {
  78                                 case "2.5.29.14":
  79                                         newt = new X509SubjectKeyIdentifierExtension (new AsnEncodedData (oid, raw_data), critical);
  80                                         break;
  81                                 case "2.5.29.15":
  82                                         newt = new X509KeyUsageExtension (new AsnEncodedData (oid, raw_data), critical);
  83                                         break;
  84                                 case "2.5.29.19":
  85                                         newt = new X509BasicConstraintsExtension (new AsnEncodedData (oid, raw_data), critical);
  86                                         break;
  87                                 case "2.5.29.37":
  88                                         newt = new X509EnhancedKeyUsageExtension (new AsnEncodedData (oid, raw_data), critical);
  89                                         break;
  90                                 }
  91 #else
  92                                 object[] parameters = new object [2];
  93                                 parameters [0] = new AsnEncodedData (oid, raw_data ?? Empty);
  94                                 parameters [1] = critical;
  95                                 newt = (X509Extension) CryptoConfig.CreateFromName (oid, parameters);
  96 #endif
  97                                 if (newt == null) {
  98                                         // not registred in CryptoConfig, using default
  99                                         newt = new X509Extension (oid, raw_data ?? Empty, critical);
 100                                 }
 101                                 _list.Add (newt);
 102                         }
 103                 }
 104
 105                 // properties
 106
 107                 public int Count {
 108                         get { return _list.Count; }
 109                 }
 110
 111                 public bool IsSynchronized {
 112                         get { return _list.IsSynchronized; }
 113                 }
 114
 115                 public object SyncRoot {
 116                         get { return this; }
 117                 }
 118
 119                 public X509Extension this [int index] {
 120                         get {
 121                                 if (index < 0)
 122                                         throw new InvalidOperationException ("index");
 123                                 return (X509Extension) _list [index];
 124                         }
 125                 }
 126
 127                 public X509Extension this [string oid] {
 128                         get {
 129                                 if (oid == null)
 130                                         throw new ArgumentNullException ("oid");
 131                                 if ((_list.Count == 0) || (oid.Length == 0))
 132                                         return null;
 133
 134                                 foreach (X509Extension extension in _list) {
 135                                         if (extension.Oid.Value.Equals (oid))
 136                                                 return extension;
 137                                 }
 138                                 return null;
 139                         }
 140                 }
 141
 142                 // methods
 143
 144                 public int Add (X509Extension extension)
 145                 {
 146                         if (extension == null)
 147                                 throw new ArgumentNullException ("extension");
 148
 149                         return _list.Add (extension);
 150                 }
 151
 152                 public void CopyTo (X509Extension[] array, int index)
 153                 {
 154                         if (array == null)
 155                                 throw new ArgumentNullException ("array");
 156                         if (index < 0)
 157                                 throw new ArgumentOutOfRangeException ("negative index");
 158                         if (index >= array.Length)
 159                                 throw new ArgumentOutOfRangeException ("index >= array.Length");
 160
 161                         _list.CopyTo (array, index);
 162                 }
 163
 164                 void ICollection.CopyTo (Array array, int index)
 165                 {
 166                         if (array == null)
 167                                 throw new ArgumentNullException ("array");
 168                         if (index < 0)
 169                                 throw new ArgumentOutOfRangeException ("negative index");
 170                         if (index >= array.Length)
 171                                 throw new ArgumentOutOfRangeException ("index >= array.Length");
 172
 173                         _list.CopyTo (array, index);
 174                 }
 175
 176                 public X509ExtensionEnumerator GetEnumerator ()
 177                 {
 178                         return new X509ExtensionEnumerator (_list);
 179                 }
 180
 181                 IEnumerator IEnumerable.GetEnumerator ()
 182                 {
 183                         return new X509ExtensionEnumerator (_list);
 184                 }
 185         }
 186 }
 187
 188 #endif