mcs/class/Mono.Security/Mono.Security.X509.Extensions/SubjectAltNameExtension.cs

   1 //
   2 // SubjectAltNameExtension.cs: Handles X.509 SubjectAltName extensions.
   3 //
   4 // Author:
   5 //      Sebastien Pouliot <sebastien@ximian.com>
   6 //
   7 // (C) 2003 Motus Technologies Inc. (http://www.motus.com)
   8 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29
  30 using System;
  31 using System.Net;
  32 using System.Collections;
  33 using System.Text;
  34
  35 using Mono.Security;
  36 using Mono.Security.X509;
  37
  38 namespace Mono.Security.X509.Extensions {
  39
  40         /*
  41          * id-ce-subjectAltName OBJECT IDENTIFIER ::=  { id-ce 17 }
  42          *
  43          * SubjectAltName ::= GeneralNames
  44          *
  45          * GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName
  46          *
  47          * GeneralName ::= CHOICE {
  48          *    otherName                       [0]     OtherName,
  49          *    rfc822Name                      [1]     IA5String,
  50          *    dNSName                         [2]     IA5String,
  51          *    x400Address                     [3]     ORAddress,
  52          *    directoryName                   [4]     Name,
  53          *    ediPartyName                    [5]     EDIPartyName,
  54          *    uniformResourceIdentifier       [6]     IA5String,
  55          *    iPAddress                       [7]     OCTET STRING,
  56          *    registeredID                    [8]     OBJECT IDENTIFIER
  57          * }
  58          *
  59          * OtherName ::= SEQUENCE {
  60          *    type-id    OBJECT IDENTIFIER,
  61          *    value      [0] EXPLICIT ANY DEFINED BY type-id
  62          * }
  63          *
  64          * EDIPartyName ::= SEQUENCE {
  65          *    nameAssigner            [0]     DirectoryString OPTIONAL,
  66          *    partyName               [1]     DirectoryString
  67          * }
  68          */
  69
  70         // TODO - incomplete (only rfc822Name, dNSName are supported)
  71         public class SubjectAltNameExtension : X509Extension {
  72
  73                 private GeneralNames _names;
  74
  75                 public SubjectAltNameExtension ()
  76                 {
  77                         extnOid = "2.5.29.17";
  78                         _names = new GeneralNames ();
  79                 }
  80
  81                 public SubjectAltNameExtension (ASN1 asn1)
  82                         : base (asn1)
  83                 {
  84                 }
  85
  86                 public SubjectAltNameExtension (X509Extension extension)
  87                         : base (extension)
  88                 {
  89                 }
  90
  91                 protected override void Decode ()
  92                 {
  93                         ASN1 sequence = new ASN1 (extnValue.Value);
  94                         if (sequence.Tag != 0x30)
  95                                 throw new ArgumentException ("Invalid SubjectAltName extension");
  96                         _names = new GeneralNames (sequence);
  97                 }
  98
  99                 public override string Name {
 100                         get { return "Subject Alternative Name"; }
 101                 }
 102
 103                 public string[] RFC822 {
 104                         get { return _names.RFC822; }
 105                 }
 106
 107                 public string[] DNSNames {
 108                         get { return _names.DNSNames; }
 109                 }
 110
 111                 // Incomplete support
 112                 public string[] IPAddresses {
 113                         get { return _names.IPAddresses; }
 114                 }
 115
 116                 public override string ToString ()
 117                 {
 118                         return _names.ToString ();
 119                 }
 120         }
 121 }