src/Tizen.Security.SecureRepository/Tizen.Security.SecureRepository/SafeCertificateListHandle.cs

   1 /*
   2  *  Copyright (c) 2016 Samsung Electronics Co., Ltd All Rights Reserved
   3  *
   4  *  Licensed under the Apache License, Version 2.0 (the "License");
   5  *  you may not use this file except in compliance with the License.
   6  *  You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  *  Unless required by applicable law or agreed to in writing, software
  11  *  distributed under the License is distributed on an "AS IS" BASIS,
  12  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  *  See the License for the specific language governing permissions and
  14  *  limitations under the License
  15  */
  16
  17 using System;
  18 using System.Collections.Generic;
  19 using System.Runtime.InteropServices;
  20 using static Interop;
  21
  22 namespace Tizen.Security.SecureRepository
  23 {
  24     internal class SafeCertificateListHandle
  25     {
  26         private IEnumerable<Certificate> _certificates;
  27
  28         public SafeCertificateListHandle(IEnumerable<Certificate> certs)
  29         {
  30             _certificates = certs;
  31         }
  32
  33         public SafeCertificateListHandle(IntPtr ptr)
  34         {
  35             var cur = ptr;
  36             var certs = new List<Certificate>();
  37             while (cur != IntPtr.Zero)
  38             {
  39                 var ckmcCertList = Marshal.PtrToStructure<CkmcCertList>(cur);
  40                 certs.Add(new Certificate(ckmcCertList.cert));
  41                 cur = ckmcCertList.next;
  42             }
  43
  44             this._certificates = certs;
  45         }
  46
  47         public IEnumerable<Certificate> Certificates
  48         {
  49             get { return _certificates; }
  50         }
  51
  52         internal IntPtr GetHandle()
  53         {
  54             if (_certificates == null)
  55                 return IntPtr.Zero;
  56
  57             IntPtr first = IntPtr.Zero;
  58             IntPtr previous = IntPtr.Zero;
  59             IntPtr certPtr = IntPtr.Zero;
  60
  61             try
  62             {
  63                 foreach (var cert in this._certificates)
  64                 {
  65                     // initialize local variables to release memory safely for
  66                     // in case of exception occured
  67                     certPtr = IntPtr.Zero;
  68
  69                     certPtr = cert.GetHandle();
  70
  71                     IntPtr outCertList;
  72                     if (previous == IntPtr.Zero)
  73                     {
  74                         Interop.CheckNThrowException(
  75                             Interop.CkmcTypes.CertListNew(certPtr, out outCertList),
  76                             "Failed to create new CertificateList.");
  77                         first = outCertList;
  78                     }
  79                     else
  80                     {
  81                         Interop.CheckNThrowException(
  82                             Interop.CkmcTypes.CertListAdd(previous, certPtr,
  83                                                           out outCertList),
  84                             "Failed to add Certificate to CertificateList.");
  85                     }
  86                     previous = outCertList;
  87                 }
  88
  89                 return first;
  90             }
  91             catch
  92             {
  93                 if (first != IntPtr.Zero)
  94                     Interop.CkmcTypes.CertListAllFree(first);
  95                 if (certPtr != IntPtr.Zero)
  96                     Interop.CkmcTypes.CertFree(certPtr);
  97
  98                 throw;
  99             }
 100         }
 101     }
 102 }