Tizen.Security/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 : SafeHandle
  25     {
  26         private IEnumerable<Certificate> _certificates;
  27
  28         public SafeCertificateListHandle(IEnumerable<Certificate> certs) : base(IntPtr.Zero, true)
  29         {
  30             this.SetHandle(IntPtr.Zero);
  31             _certificates = certs;
  32         }
  33
  34         public SafeCertificateListHandle(IntPtr ptrCerts, bool ownsHandle = true) : base(IntPtr.Zero, ownsHandle)
  35         {
  36             this.SetHandle(ptrCerts);
  37
  38             List<Certificate> certs = new List<Certificate>();
  39             IntPtr ptrCurr = handle;
  40             while (ptrCurr != IntPtr.Zero)
  41             {
  42                 CkmcCertList ckmcCertList = (CkmcCertList)Marshal.PtrToStructure(ptrCurr, typeof(CkmcCertList));
  43                 certs.Add(new Certificate(ckmcCertList.cert, false));
  44                 ptrCurr = ckmcCertList.next;
  45             }
  46
  47             _certificates = certs;
  48         }
  49
  50         public IEnumerable<Certificate> Certificates
  51         {
  52             get { return _certificates; }
  53         }
  54
  55         internal IntPtr ToCkmcCertificateListPtr()
  56         {
  57             if (_certificates == null)
  58                 return IntPtr.Zero;
  59
  60             if (!IsInvalid)
  61                 return handle;
  62
  63             IntPtr first = IntPtr.Zero;
  64             IntPtr previous = IntPtr.Zero;
  65
  66             int ret;
  67             foreach (Certificate cert in _certificates)
  68             {
  69                 IntPtr certPtr;
  70                 ret = Interop.CkmcTypes.CertNew(cert.Binary, (uint)cert.Binary.Length, (int)cert.Format, out certPtr);
  71                 Interop.CheckNThrowException(ret, "Failed to create new Certificate.");
  72
  73                 IntPtr outCertList;
  74                 if (previous == IntPtr.Zero)
  75                 {
  76                     ret = Interop.CkmcTypes.CertListNew(certPtr, out outCertList);
  77                     Interop.CheckNThrowException(ret, "Failed to create new CertificateList.");
  78                     first = outCertList;
  79                     previous = outCertList;
  80                 }
  81                 else
  82                 {
  83                     ret = Interop.CkmcTypes.CertListAdd(previous, certPtr, out outCertList);
  84                     Interop.CheckNThrowException(ret, "Failed to add Certificate to CertificateList.");
  85                     previous = outCertList;
  86                 }
  87             }
  88
  89             this.SetHandle(first);
  90             return first;
  91         }
  92
  93         /// <summary>
  94         /// Gets a value that indicates whether the handle is invalid.
  95         /// </summary>
  96         public override bool IsInvalid
  97         {
  98             get { return (handle == IntPtr.Zero); }
  99         }
 100
 101         /// <summary>
 102         /// When overridden in a derived class, executes the code required to free the handle.
 103         /// </summary>
 104         /// <returns>true if the handle is released successfully</returns>
 105         protected override bool ReleaseHandle()
 106         {
 107             if (handle == IntPtr.Zero) // do not release
 108                 return true;
 109
 110             Interop.CkmcTypes.CertListAllFree(handle);
 111             this.SetHandle(IntPtr.Zero);
 112             return true;
 113         }
 114     }
 115 }