common/EFDIR.cpp

   1 /*
   2  * Copyright (c) 2012, 2013 Samsung Electronics Co., Ltd.
   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 #include <stdio.h>
  18
  19 #include "Debug.h"
  20 #include "EFDIR.h"
  21 #include "APDUHelper.h"
  22 #include "SimpleTLV.h"
  23
  24 namespace smartcard_service_api
  25 {
  26         static unsigned char path_efdir[] = { 0x2f, 0x00 };
  27         static ByteArray PATH_EFDIR(ARRAY_AND_SIZE(path_efdir));
  28
  29         EFDIR::EFDIR(Channel *channel) : FileObject(channel)
  30         {
  31         }
  32
  33         EFDIR::EFDIR(Channel *channel, const ByteArray &selectResponse) :
  34                 FileObject(channel, selectResponse)
  35         {
  36         }
  37
  38         EFDIR::~EFDIR()
  39         {
  40         }
  41
  42         int EFDIR::select()
  43         {
  44                 int ret;
  45
  46                 ret = FileObject::select(PATH_EFDIR, false);
  47                 if (ret < SCARD_ERROR_OK)
  48                 {
  49                         _ERR("EFDIR select failed, [%d]", ret);
  50                 }
  51
  52                 return ret;
  53         }
  54
  55         const ByteArray EFDIR::parseRecord(const Record &record, const ByteArray &aid)
  56         {
  57                 bool matched = false;
  58                 ByteArray result;
  59                 SimpleTLV tlv(record.getData());
  60
  61                 if (tlv.decodeTLV() == true && tlv.getTag() == 0x61)
  62                 {
  63                         tlv.enterToValueTLV();
  64                         while (tlv.decodeTLV() == true)
  65                         {
  66                                 switch (tlv.getTag())
  67                                 {
  68                                 case 0x4F : /* aid */
  69                                         if (tlv.getValue() == aid)
  70                                                 matched = true;
  71                                         break;
  72                                 case 0x50 : /* label */
  73                                         break;
  74                                 case 0x51 : /* path */
  75                                         result = tlv.getValue();
  76                                         break;
  77                                 case 0x53 : /* ddo */
  78                                         break;
  79                                 }
  80                         }
  81                         tlv.returnToParentTLV();
  82
  83                         if (matched == true)
  84                         {
  85                                 _DBG("Found!! : path %s", result.toString().c_str());
  86                         }
  87                         else
  88                         {
  89                                 result.clear();
  90                         }
  91                 }
  92
  93                 return result;
  94         }
  95
  96         const ByteArray EFDIR::getPathByAID(const ByteArray &aid)
  97         {
  98                 ByteArray result;
  99                 Record record;
 100                 unsigned int id;
 101                 int status = 0;
 102
 103                 for (id = 1; status >= 0; id++)
 104                 {
 105                         status = readRecord(0, id, record);
 106                         if (status >= 0)
 107                         {
 108                                 result = parseRecord(record, aid);
 109                                 if (result.size() > 0)
 110                                         break;
 111                         }
 112                 }
 113
 114                 return result;
 115         }
 116 } /* namespace smartcard_service_api */