mcs/class/System/System.Security.Cryptography.X509Certificates/X509ChainElement.cs

   1 //
   2 // X509ChainElement.cs - System.Security.Cryptography.X509Certificates.X509ChainElement
   3 //
   4 // Author:
   5 //      Sebastien Pouliot  <sebastien@ximian.com>
   6 //
   7 // (C) 2003 Motus Technologies Inc. (http://www.motus.com)
   8 // Copyright (C) 2005-2006 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 #if SECURITY_DEP
  31
  32 using Mono.Security.X509;
  33
  34 namespace System.Security.Cryptography.X509Certificates {
  35
  36         public class X509ChainElement {
  37
  38                 private X509Certificate2 certificate;
  39                 private X509ChainStatus[] status;
  40                 private string info;
  41                 private X509ChainStatusFlags compressed_status_flags;
  42
  43                 // constructors
  44
  45                 // only accessible from X509Chain.ChainElements
  46                 internal X509ChainElement (X509Certificate2 certificate)
  47                 {
  48                         this.certificate = certificate;
  49                         // so far String.Empty is the only thing I've seen.
  50                         // The interesting stuff is inside X509ChainStatus.Information
  51                         info = String.Empty;
  52                 }
  53
  54                 // properties
  55
  56                 public X509Certificate2 Certificate {
  57                         get { return certificate; }
  58                 }
  59
  60                 public X509ChainStatus[] ChainElementStatus {
  61                         get { return status; }
  62                 }
  63
  64                 public string Information {
  65                         get { return info; }
  66                 }
  67
  68                 // private stuff
  69
  70                 internal X509ChainStatusFlags StatusFlags {
  71                         get { return compressed_status_flags; }
  72                         set { compressed_status_flags = value; }
  73                 }
  74
  75                 private int Count (X509ChainStatusFlags flags)
  76                 {
  77                         int size = 0;
  78                         int n = 0;
  79                         int f = (int) flags;
  80                         int m = 0x1;
  81                         while (n++ < 32) {
  82                                 if ((f & m) == m)
  83                                         size++;
  84                                 m <<= 1;
  85                         }
  86                         return size;
  87                 }
  88
  89                 private void Set (X509ChainStatus[] status, ref int position, X509ChainStatusFlags flags, X509ChainStatusFlags mask)
  90                 {
  91                         if ((flags & mask) != 0) {
  92                                 status [position].Status = mask;
  93                                 status [position].StatusInformation = X509ChainStatus.GetInformation (mask);
  94                                 position++;
  95                         }
  96                 }
  97
  98                 internal void UncompressFlags ()
  99                 {
 100                         if (compressed_status_flags == X509ChainStatusFlags.NoError) {
 101                                 status = new X509ChainStatus [0];
 102                         } else {
 103                                 int size = Count (compressed_status_flags);
 104                                 status = new X509ChainStatus [size];
 105
 106                                 int n = 0;
 107                                 // process every possible error
 108                                 Set (status, ref n, compressed_status_flags, X509ChainStatusFlags.UntrustedRoot);
 109                                 Set (status, ref n, compressed_status_flags, X509ChainStatusFlags.NotTimeValid);
 110                                 Set (status, ref n, compressed_status_flags, X509ChainStatusFlags.NotTimeNested);
 111                                 Set (status, ref n, compressed_status_flags, X509ChainStatusFlags.Revoked);
 112                                 Set (status, ref n, compressed_status_flags, X509ChainStatusFlags.NotSignatureValid);
 113                                 Set (status, ref n, compressed_status_flags, X509ChainStatusFlags.NotValidForUsage);
 114                                 Set (status, ref n, compressed_status_flags, X509ChainStatusFlags.RevocationStatusUnknown);
 115                                 Set (status, ref n, compressed_status_flags, X509ChainStatusFlags.Cyclic);
 116                                 Set (status, ref n, compressed_status_flags, X509ChainStatusFlags.InvalidExtension);
 117                                 Set (status, ref n, compressed_status_flags, X509ChainStatusFlags.InvalidPolicyConstraints);
 118                                 Set (status, ref n, compressed_status_flags, X509ChainStatusFlags.InvalidBasicConstraints);
 119                                 Set (status, ref n, compressed_status_flags, X509ChainStatusFlags.InvalidNameConstraints);
 120                                 Set (status, ref n, compressed_status_flags, X509ChainStatusFlags.HasNotSupportedNameConstraint);
 121                                 Set (status, ref n, compressed_status_flags, X509ChainStatusFlags.HasNotDefinedNameConstraint);
 122                                 Set (status, ref n, compressed_status_flags, X509ChainStatusFlags.HasNotPermittedNameConstraint);
 123                                 Set (status, ref n, compressed_status_flags, X509ChainStatusFlags.HasExcludedNameConstraint);
 124                                 Set (status, ref n, compressed_status_flags, X509ChainStatusFlags.PartialChain);
 125                                 Set (status, ref n, compressed_status_flags, X509ChainStatusFlags.CtlNotTimeValid);
 126                                 Set (status, ref n, compressed_status_flags, X509ChainStatusFlags.CtlNotSignatureValid);
 127                                 Set (status, ref n, compressed_status_flags, X509ChainStatusFlags.CtlNotValidForUsage);
 128                                 Set (status, ref n, compressed_status_flags, X509ChainStatusFlags.OfflineRevocation);
 129                                 Set (status, ref n, compressed_status_flags, X509ChainStatusFlags.NoIssuanceChainPolicy);
 130                         }
 131                 }
 132         }
 133 }
 134
 135 #endif