mcs/class/System/Mono.Btls/X509ChainImplBtls.cs

   1 //
   2 // X509ChainImplBtls.cs
   3 //
   4 // Author:
   5 //       Martin Baulig <martin.baulig@xamarin.com>
   6 //
   7 // Copyright (c) 2016 Xamarin Inc. (http://www.xamarin.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining a copy
  10 // of this software and associated documentation files (the "Software"), to deal
  11 // in the Software without restriction, including without limitation the rights
  12 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  13 // copies of the Software, and to permit persons to whom the Software is
  14 // furnished to do so, subject to the following conditions:
  15 //
  16 // The above copyright notice and this permission notice shall be included in
  17 // all copies or substantial portions of the Software.
  18 //
  19 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  22 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  23 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  24 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  25 // THE SOFTWARE.
  26 #if SECURITY_DEP && MONO_FEATURE_BTLS
  27 using System;
  28 using System.Text;
  29 using System.Security;
  30 using System.Security.Cryptography;
  31 using System.Security.Cryptography.X509Certificates;
  32 using MX = Mono.Security.X509;
  33
  34 namespace Mono.Btls
  35 {
  36         class X509ChainImplBtls : X509ChainImpl
  37         {
  38                 MonoBtlsX509StoreCtx storeCtx;
  39                 MonoBtlsX509Chain chain;
  40                 MonoBtlsX509Chain untrustedChain;
  41                 X509ChainElementCollection elements;
  42                 X509Certificate2Collection untrusted;
  43                 X509Certificate2[] certificates;
  44                 X509ChainPolicy policy;
  45
  46                 internal X509ChainImplBtls (MonoBtlsX509Chain chain)
  47                 {
  48                         this.chain = chain.Copy ();
  49                         policy = new X509ChainPolicy ();
  50                 }
  51
  52                 internal X509ChainImplBtls (MonoBtlsX509StoreCtx storeCtx)
  53                 {
  54                         this.storeCtx = storeCtx.Copy ();
  55                         this.chain = storeCtx.GetChain ();
  56
  57                         policy = new X509ChainPolicy ();
  58
  59                         untrustedChain = storeCtx.GetUntrusted ();
  60
  61                         if (untrustedChain != null) {
  62                                 untrusted = new X509Certificate2Collection ();
  63                                 policy.ExtraStore = untrusted;
  64                                 for (int i = 0; i < untrustedChain.Count; i++) {
  65                                         var cert = untrustedChain.GetCertificate (i);
  66                                         using (var impl = new X509CertificateImplBtls (cert))
  67                                                 untrusted.Add (new X509Certificate2 (impl));
  68                                 }
  69                         }
  70                 }
  71
  72                 internal X509ChainImplBtls ()
  73                 {
  74                         chain = new MonoBtlsX509Chain ();
  75                         elements = new X509ChainElementCollection ();
  76                         policy = new X509ChainPolicy ();
  77                 }
  78
  79                 public override bool IsValid {
  80                         get { return chain != null && chain.IsValid; }
  81                 }
  82
  83                 public override IntPtr Handle {
  84                         get { return chain.Handle.DangerousGetHandle (); }
  85                 }
  86
  87                 internal MonoBtlsX509Chain Chain {
  88                         get {
  89                                 ThrowIfContextInvalid ();
  90                                 return chain;
  91                         }
  92                 }
  93
  94                 internal MonoBtlsX509StoreCtx StoreCtx {
  95                         get {
  96                                 ThrowIfContextInvalid ();
  97                                 return storeCtx;
  98                         }
  99                 }
 100
 101                 public override X509ChainElementCollection ChainElements {
 102                         get {
 103                                 ThrowIfContextInvalid ();
 104                                 if (elements != null)
 105                                         return elements;
 106
 107                                 elements = new X509ChainElementCollection ();
 108                                 certificates = new X509Certificate2 [chain.Count];
 109
 110                                 for (int i = 0; i < certificates.Length; i++) {
 111                                         var cert = chain.GetCertificate (i);
 112                                         using (var impl = new X509CertificateImplBtls (cert))
 113                                                 certificates [i] = new X509Certificate2 (impl);
 114                                         elements.Add (certificates [i]);
 115                                 }
 116
 117                                 return elements;
 118                         }
 119                 }
 120
 121                 public override X509ChainPolicy ChainPolicy {
 122                         get { return policy; }
 123                         set { policy = value; }
 124                 }
 125
 126                 public override X509ChainStatus[] ChainStatus {
 127                         get { throw new NotImplementedException (); }
 128                 }
 129
 130                 public override bool Build (X509Certificate2 certificate)
 131                 {
 132                         return false;
 133                 }
 134
 135                 public override void Reset ()
 136                 {
 137                         if (certificates != null) {
 138                                 foreach (var certificate in certificates)
 139                                         certificate.Dispose ();
 140                                 certificates = null;
 141                         }
 142                         if (elements != null) {
 143                                 elements.Clear ();
 144                                 elements = null;
 145                         }
 146                 }
 147
 148                 protected override void Dispose (bool disposing)
 149                 {
 150                         if (disposing) {
 151                                 if (chain != null) {
 152                                         chain.Dispose ();
 153                                         chain = null;
 154                                 }
 155                                 if (storeCtx != null) {
 156                                         storeCtx.Dispose ();
 157                                         storeCtx = null;
 158                                 }
 159                                 if (untrustedChain != null) {
 160                                         untrustedChain.Dispose ();
 161                                         untrustedChain = null;
 162                                 }
 163                                 if (untrusted != null) {
 164                                         foreach (var cert in untrusted)
 165                                                 cert.Dispose ();
 166                                         untrusted = null;
 167                                 }
 168                                 if (certificates != null) {
 169                                         foreach (var cert in certificates)
 170                                                 cert.Dispose ();
 171                                         certificates = null;
 172                                 }
 173                         }
 174                         base.Dispose (disposing);
 175                 }
 176         }
 177 }
 178 #endif