/src/FreeRDP/libfreerdp/utils/smartcard_operations.c

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/**
 * FreeRDP: A Remote Desktop Protocol Implementation
 * Smartcard Device Service Virtual Channel
 *
 * Copyright (C) Alexi Volkov <alexi@myrealbox.com> 2006
 * Copyright 2011 O.S. Systems Software Ltda.
 * Copyright 2011 Anthony Tong <atong@trustedcs.com>
 * Copyright 2015 Thincast Technologies GmbH
 * Copyright 2015 DI (FH) Martin Haimberger <martin.haimberger@thincast.com>
 * Copyright 2017 Armin Novak <armin.novak@thincast.com>
 * Copyright 2017 Thincast Technologies GmbH
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <freerdp/config.h>

#include <winpr/assert.h>

#include <winpr/crt.h>
#include <winpr/print.h>
#include <winpr/stream.h>
#include <winpr/smartcard.h>

#include <freerdp/freerdp.h>
#include <freerdp/channels/rdpdr.h>
#include <freerdp/channels/scard.h>

#include <freerdp/utils/rdpdr_utils.h>

#include <freerdp/utils/smartcard_operations.h>
#include <freerdp/utils/smartcard_pack.h>

#include <freerdp/log.h>
#define TAG FREERDP_TAG("utils.smartcard.ops")

static LONG smartcard_call_to_operation_handle(SMARTCARD_OPERATION* operation)
{
  WINPR_ASSERT(operation);

  operation->hContext =
      smartcard_scard_context_native_from_redir(&(operation->call.handles.hContext));
  operation->hCard = smartcard_scard_handle_native_from_redir(&(operation->call.handles.hCard));

  return SCARD_S_SUCCESS;
}

static LONG smartcard_EstablishContext_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_establish_context_call(s, &operation->call.establishContext);
  if (status != SCARD_S_SUCCESS)
  {
    return scard_log_status_error(TAG, "smartcard_unpack_establish_context_call", status);
  }

  return SCARD_S_SUCCESS;
}

static LONG smartcard_ReleaseContext_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_context_call(s, &operation->call.context, "ReleaseContext");
  if (status != SCARD_S_SUCCESS)
    scard_log_status_error(TAG, "smartcard_unpack_context_call", status);

  return status;
}

static LONG smartcard_IsValidContext_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_context_call(s, &operation->call.context, "IsValidContext");

  return status;
}

static LONG smartcard_ListReaderGroupsA_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_list_reader_groups_call(s, &operation->call.listReaderGroups, FALSE);

  return status;
}

static LONG smartcard_ListReaderGroupsW_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_list_reader_groups_call(s, &operation->call.listReaderGroups, TRUE);

  return status;
}

static LONG smartcard_ListReadersA_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_list_readers_call(s, &operation->call.listReaders, FALSE);

  return status;
}

static LONG smartcard_ListReadersW_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_list_readers_call(s, &operation->call.listReaders, TRUE);

  return status;
}

static LONG smartcard_context_and_two_strings_a_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status =
      smartcard_unpack_context_and_two_strings_a_call(s, &operation->call.contextAndTwoStringA);

  return status;
}

static LONG smartcard_context_and_two_strings_w_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status =
      smartcard_unpack_context_and_two_strings_w_call(s, &operation->call.contextAndTwoStringW);

  return status;
}

static LONG smartcard_context_and_string_a_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_context_and_string_a_call(s, &operation->call.contextAndStringA);

  return status;
}

static LONG smartcard_context_and_string_w_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_context_and_string_w_call(s, &operation->call.contextAndStringW);

  return status;
}

static LONG smartcard_LocateCardsA_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_locate_cards_a_call(s, &operation->call.locateCardsA);

  return status;
}

static LONG smartcard_LocateCardsW_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_locate_cards_w_call(s, &operation->call.locateCardsW);

  return status;
}

static LONG smartcard_GetStatusChangeA_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  return smartcard_unpack_get_status_change_a_call(s, &operation->call.getStatusChangeA);
}

static LONG smartcard_GetStatusChangeW_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  return smartcard_unpack_get_status_change_w_call(s, &operation->call.getStatusChangeW);
}

static LONG smartcard_Cancel_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_context_call(s, &operation->call.context, "Cancel");

  return status;
}

static LONG smartcard_ConnectA_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_connect_a_call(s, &operation->call.connectA);

  return status;
}

static LONG smartcard_ConnectW_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_connect_w_call(s, &operation->call.connectW);

  return status;
}

static LONG smartcard_Reconnect_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_reconnect_call(s, &operation->call.reconnect);

  return status;
}

static LONG smartcard_Disconnect_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_hcard_and_disposition_call(s, &operation->call.hCardAndDisposition,
                                                       "Disconnect");

  return status;
}

static LONG smartcard_BeginTransaction_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_hcard_and_disposition_call(s, &operation->call.hCardAndDisposition,
                                                       "BeginTransaction");

  return status;
}

static LONG smartcard_EndTransaction_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_hcard_and_disposition_call(s, &operation->call.hCardAndDisposition,
                                                       "EndTransaction");

  return status;
}

static LONG smartcard_State_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_state_call(s, &operation->call.state);

  return status;
}

static LONG smartcard_StatusA_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_status_call(s, &operation->call.status, FALSE);

  return status;
}

static LONG smartcard_StatusW_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_status_call(s, &operation->call.status, TRUE);

  return status;
}

static LONG smartcard_Transmit_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_transmit_call(s, &operation->call.transmit);

  return status;
}

static LONG smartcard_Control_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_control_call(s, &operation->call.control);

  return status;
}

static LONG smartcard_GetAttrib_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_get_attrib_call(s, &operation->call.getAttrib);

  return status;
}

static LONG smartcard_SetAttrib_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_set_attrib_call(s, &operation->call.setAttrib);

  return status;
}

static LONG smartcard_AccessStartedEvent_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  if (!Stream_CheckAndLogRequiredLength(TAG, s, 4))
    return SCARD_F_INTERNAL_ERROR;

  Stream_Read_INT32(s, operation->call.lng.LongValue); /* Unused (4 bytes) */

  return SCARD_S_SUCCESS;
}

static LONG smartcard_LocateCardsByATRA_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_locate_cards_by_atr_a_call(s, &operation->call.locateCardsByATRA);

  return status;
}

static LONG smartcard_LocateCardsByATRW_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_locate_cards_by_atr_w_call(s, &operation->call.locateCardsByATRW);

  return status;
}

static LONG smartcard_ReadCacheA_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_read_cache_a_call(s, &operation->call.readCacheA);

  return status;
}

static LONG smartcard_ReadCacheW_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_read_cache_w_call(s, &operation->call.readCacheW);

  return status;
}

static LONG smartcard_WriteCacheA_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_write_cache_a_call(s, &operation->call.writeCacheA);

  return status;
}

static LONG smartcard_WriteCacheW_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_write_cache_w_call(s, &operation->call.writeCacheW);

  return status;
}

static LONG smartcard_GetTransmitCount_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_get_transmit_count_call(s, &operation->call.getTransmitCount);

  return status;
}

static LONG smartcard_ReleaseStartedEvent_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  WINPR_UNUSED(s);
  WINPR_UNUSED(operation);
  WLog_WARN(TAG, "According to [MS-RDPESC] 3.1.4 Message Processing Events and Sequencing Rules "
                 "SCARD_IOCTL_RELEASETARTEDEVENT is not supported");
  return SCARD_E_UNSUPPORTED_FEATURE;
}

static LONG smartcard_GetReaderIcon_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_get_reader_icon_call(s, &operation->call.getReaderIcon);

  return status;
}

static LONG smartcard_GetDeviceTypeId_Decode(wStream* s, SMARTCARD_OPERATION* operation)
{
  LONG status = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  status = smartcard_unpack_get_device_type_id_call(s, &operation->call.getDeviceTypeId);

  return status;
}

LONG smartcard_irp_device_control_decode(wStream* s, UINT32 CompletionId, UINT32 FileId,
                                         SMARTCARD_OPERATION* operation)
{
  LONG status = 0;
  UINT32 offset = 0;

  WINPR_ASSERT(s);
  WINPR_ASSERT(operation);

  /* Device Control Request */

  if (!Stream_CheckAndLogRequiredLength(TAG, s, 32))
    return SCARD_F_INTERNAL_ERROR;

  const UINT32 outputBufferLength = Stream_Get_UINT32(s); /* OutputBufferLength (4 bytes) */
  const UINT32 inputBufferLength = Stream_Get_UINT32(s);  /* InputBufferLength (4 bytes) */
  const UINT32 ioControlCode = Stream_Get_UINT32(s);      /* IoControlCode (4 bytes) */
  Stream_Seek(s, 20);                        /* Padding (20 bytes) */
  operation->ioControlCode = ioControlCode;
  operation->ioControlCodeName = scard_get_ioctl_string(ioControlCode, FALSE);
  operation->outputBufferLength = outputBufferLength;

  if (Stream_Length(s) != (Stream_GetPosition(s) + inputBufferLength))
  {
    WLog_WARN(TAG, "InputBufferLength mismatch: Actual: %" PRIuz " Expected: %" PRIuz "",
              Stream_Length(s), Stream_GetPosition(s) + inputBufferLength);
    return SCARD_F_INTERNAL_ERROR;
  }

  WLog_DBG(TAG, "%s (0x%08" PRIX32 ") FileId: %" PRIu32 " CompletionId: %" PRIu32 "",
           scard_get_ioctl_string(ioControlCode, TRUE), ioControlCode, FileId, CompletionId);

  if ((ioControlCode != SCARD_IOCTL_ACCESSSTARTEDEVENT) &&
      (ioControlCode != SCARD_IOCTL_RELEASETARTEDEVENT))
  {
    status = smartcard_unpack_common_type_header(s);
    if (status != SCARD_S_SUCCESS)
      return status;

    status = smartcard_unpack_private_type_header(s);
    if (status != SCARD_S_SUCCESS)
      return status;
  }

  /* Decode */
  switch (ioControlCode)
  {
    case SCARD_IOCTL_ESTABLISHCONTEXT:
      status = smartcard_EstablishContext_Decode(s, operation);
      break;

    case SCARD_IOCTL_RELEASECONTEXT:
      status = smartcard_ReleaseContext_Decode(s, operation);
      break;

    case SCARD_IOCTL_ISVALIDCONTEXT:
      status = smartcard_IsValidContext_Decode(s, operation);
      break;

    case SCARD_IOCTL_LISTREADERGROUPSA:
      status = smartcard_ListReaderGroupsA_Decode(s, operation);
      break;

    case SCARD_IOCTL_LISTREADERGROUPSW:
      status = smartcard_ListReaderGroupsW_Decode(s, operation);
      break;

    case SCARD_IOCTL_LISTREADERSA:
      status = smartcard_ListReadersA_Decode(s, operation);
      break;

    case SCARD_IOCTL_LISTREADERSW:
      status = smartcard_ListReadersW_Decode(s, operation);
      break;

    case SCARD_IOCTL_INTRODUCEREADERGROUPA:
      status = smartcard_context_and_string_a_Decode(s, operation);
      break;

    case SCARD_IOCTL_INTRODUCEREADERGROUPW:
      status = smartcard_context_and_string_w_Decode(s, operation);
      break;

    case SCARD_IOCTL_FORGETREADERGROUPA:
      status = smartcard_context_and_string_a_Decode(s, operation);
      break;

    case SCARD_IOCTL_FORGETREADERGROUPW:
      status = smartcard_context_and_string_w_Decode(s, operation);
      break;

    case SCARD_IOCTL_INTRODUCEREADERA:
      status = smartcard_context_and_two_strings_a_Decode(s, operation);
      break;

    case SCARD_IOCTL_INTRODUCEREADERW:
      status = smartcard_context_and_two_strings_w_Decode(s, operation);
      break;

    case SCARD_IOCTL_FORGETREADERA:
      status = smartcard_context_and_string_a_Decode(s, operation);
      break;

    case SCARD_IOCTL_FORGETREADERW:
      status = smartcard_context_and_string_w_Decode(s, operation);
      break;

    case SCARD_IOCTL_ADDREADERTOGROUPA:
      status = smartcard_context_and_two_strings_a_Decode(s, operation);
      break;

    case SCARD_IOCTL_ADDREADERTOGROUPW:
      status = smartcard_context_and_two_strings_w_Decode(s, operation);
      break;

    case SCARD_IOCTL_REMOVEREADERFROMGROUPA:
      status = smartcard_context_and_two_strings_a_Decode(s, operation);
      break;

    case SCARD_IOCTL_REMOVEREADERFROMGROUPW:
      status = smartcard_context_and_two_strings_w_Decode(s, operation);
      break;

    case SCARD_IOCTL_LOCATECARDSA:
      status = smartcard_LocateCardsA_Decode(s, operation);
      break;

    case SCARD_IOCTL_LOCATECARDSW:
      status = smartcard_LocateCardsW_Decode(s, operation);
      break;

    case SCARD_IOCTL_GETSTATUSCHANGEA:
      status = smartcard_GetStatusChangeA_Decode(s, operation);
      break;

    case SCARD_IOCTL_GETSTATUSCHANGEW:
      status = smartcard_GetStatusChangeW_Decode(s, operation);
      break;

    case SCARD_IOCTL_CANCEL:
      status = smartcard_Cancel_Decode(s, operation);
      break;

    case SCARD_IOCTL_CONNECTA:
      status = smartcard_ConnectA_Decode(s, operation);
      break;

    case SCARD_IOCTL_CONNECTW:
      status = smartcard_ConnectW_Decode(s, operation);
      break;

    case SCARD_IOCTL_RECONNECT:
      status = smartcard_Reconnect_Decode(s, operation);
      break;

    case SCARD_IOCTL_DISCONNECT:
      status = smartcard_Disconnect_Decode(s, operation);
      break;

    case SCARD_IOCTL_BEGINTRANSACTION:
      status = smartcard_BeginTransaction_Decode(s, operation);
      break;

    case SCARD_IOCTL_ENDTRANSACTION:
      status = smartcard_EndTransaction_Decode(s, operation);
      break;

    case SCARD_IOCTL_STATE:
      status = smartcard_State_Decode(s, operation);
      break;

    case SCARD_IOCTL_STATUSA:
      status = smartcard_StatusA_Decode(s, operation);
      break;

    case SCARD_IOCTL_STATUSW:
      status = smartcard_StatusW_Decode(s, operation);
      break;

    case SCARD_IOCTL_TRANSMIT:
      status = smartcard_Transmit_Decode(s, operation);
      break;

    case SCARD_IOCTL_CONTROL:
      status = smartcard_Control_Decode(s, operation);
      break;

    case SCARD_IOCTL_GETATTRIB:
      status = smartcard_GetAttrib_Decode(s, operation);
      break;

    case SCARD_IOCTL_SETATTRIB:
      status = smartcard_SetAttrib_Decode(s, operation);
      break;

    case SCARD_IOCTL_ACCESSSTARTEDEVENT:
      status = smartcard_AccessStartedEvent_Decode(s, operation);
      break;

    case SCARD_IOCTL_LOCATECARDSBYATRA:
      status = smartcard_LocateCardsByATRA_Decode(s, operation);
      break;

    case SCARD_IOCTL_LOCATECARDSBYATRW:
      status = smartcard_LocateCardsByATRW_Decode(s, operation);
      break;

    case SCARD_IOCTL_READCACHEA:
      status = smartcard_ReadCacheA_Decode(s, operation);
      break;

    case SCARD_IOCTL_READCACHEW:
      status = smartcard_ReadCacheW_Decode(s, operation);
      break;

    case SCARD_IOCTL_WRITECACHEA:
      status = smartcard_WriteCacheA_Decode(s, operation);
      break;

    case SCARD_IOCTL_WRITECACHEW:
      status = smartcard_WriteCacheW_Decode(s, operation);
      break;

    case SCARD_IOCTL_GETTRANSMITCOUNT:
      status = smartcard_GetTransmitCount_Decode(s, operation);
      break;

    case SCARD_IOCTL_RELEASETARTEDEVENT:
      status = smartcard_ReleaseStartedEvent_Decode(s, operation);
      break;

    case SCARD_IOCTL_GETREADERICON:
      status = smartcard_GetReaderIcon_Decode(s, operation);
      break;

    case SCARD_IOCTL_GETDEVICETYPEID:
      status = smartcard_GetDeviceTypeId_Decode(s, operation);
      break;

    default:
      status = SCARD_F_INTERNAL_ERROR;
      break;
  }

  smartcard_call_to_operation_handle(operation);

  if ((ioControlCode != SCARD_IOCTL_ACCESSSTARTEDEVENT) &&
      (ioControlCode != SCARD_IOCTL_RELEASETARTEDEVENT))
  {
    offset = (RDPDR_DEVICE_IO_REQUEST_LENGTH + RDPDR_DEVICE_IO_CONTROL_REQ_HDR_LENGTH);
    smartcard_unpack_read_size_align(s, Stream_GetPosition(s) - offset, 8);
  }

  if (Stream_GetPosition(s) < Stream_Length(s))
  {
    size_t difference = 0;
    difference = Stream_Length(s) - Stream_GetPosition(s);
    WLog_WARN(TAG,
              "IRP was not fully parsed %s (%s [0x%08" PRIX32 "]): Actual: %" PRIuz
              ", Expected: %" PRIuz ", Difference: %" PRIuz "",
              scard_get_ioctl_string(ioControlCode, TRUE),
              scard_get_ioctl_string(ioControlCode, FALSE), ioControlCode,
              Stream_GetPosition(s), Stream_Length(s), difference);
    winpr_HexDump(TAG, WLOG_WARN, Stream_ConstPointer(s), difference);
  }

  if (Stream_GetPosition(s) > Stream_Length(s))
  {
    size_t difference = 0;
    difference = Stream_GetPosition(s) - Stream_Length(s);
    WLog_WARN(TAG,
              "IRP was parsed beyond its end %s (0x%08" PRIX32 "): Actual: %" PRIuz
              ", Expected: %" PRIuz ", Difference: %" PRIuz "",
              scard_get_ioctl_string(ioControlCode, TRUE), ioControlCode, Stream_GetPosition(s),
              Stream_Length(s), difference);
  }

  return status;
}

static void free_reader_states_a(LPSCARD_READERSTATEA rgReaderStates, UINT32 cReaders)
{
  for (UINT32 x = 0; x < cReaders; x++)
  {
    SCARD_READERSTATEA* state = &rgReaderStates[x];
    free(state->szReader);
  }

  free(rgReaderStates);
}

static void free_reader_states_w(LPSCARD_READERSTATEW rgReaderStates, UINT32 cReaders)
{
  for (UINT32 x = 0; x < cReaders; x++)
  {
    SCARD_READERSTATEW* state = &rgReaderStates[x];
    free(state->szReader);
  }

  free(rgReaderStates);
}

void smartcard_operation_free(SMARTCARD_OPERATION* op, BOOL allocated)
{
  if (!op)
    return;
  switch (op->ioControlCode)
  {
    case SCARD_IOCTL_CANCEL:
    case SCARD_IOCTL_ACCESSSTARTEDEVENT:
    case SCARD_IOCTL_RELEASETARTEDEVENT:
    case SCARD_IOCTL_LISTREADERGROUPSA:
    case SCARD_IOCTL_LISTREADERGROUPSW:
    case SCARD_IOCTL_RECONNECT:
    case SCARD_IOCTL_DISCONNECT:
    case SCARD_IOCTL_BEGINTRANSACTION:
    case SCARD_IOCTL_ENDTRANSACTION:
    case SCARD_IOCTL_STATE:
    case SCARD_IOCTL_STATUSA:
    case SCARD_IOCTL_STATUSW:
    case SCARD_IOCTL_ESTABLISHCONTEXT:
    case SCARD_IOCTL_RELEASECONTEXT:
    case SCARD_IOCTL_ISVALIDCONTEXT:
    case SCARD_IOCTL_GETATTRIB:
    case SCARD_IOCTL_GETTRANSMITCOUNT:
      break;

    case SCARD_IOCTL_LOCATECARDSA:
    {
      LocateCardsA_Call* call = &op->call.locateCardsA;
      free(call->mszCards);

      free_reader_states_a(call->rgReaderStates, call->cReaders);
    }
    break;
    case SCARD_IOCTL_LOCATECARDSW:
    {
      LocateCardsW_Call* call = &op->call.locateCardsW;
      free(call->mszCards);

      free_reader_states_w(call->rgReaderStates, call->cReaders);
    }
    break;

    case SCARD_IOCTL_LOCATECARDSBYATRA:
    {
      LocateCardsByATRA_Call* call = &op->call.locateCardsByATRA;

      free_reader_states_a(call->rgReaderStates, call->cReaders);
    }
    break;
    case SCARD_IOCTL_LOCATECARDSBYATRW:
    {
      LocateCardsByATRW_Call* call = &op->call.locateCardsByATRW;
      free_reader_states_w(call->rgReaderStates, call->cReaders);
    }
    break;
    case SCARD_IOCTL_FORGETREADERA:
    case SCARD_IOCTL_INTRODUCEREADERGROUPA:
    case SCARD_IOCTL_FORGETREADERGROUPA:
    {
      ContextAndStringA_Call* call = &op->call.contextAndStringA;
      free(call->sz);
    }
    break;

    case SCARD_IOCTL_FORGETREADERW:
    case SCARD_IOCTL_INTRODUCEREADERGROUPW:
    case SCARD_IOCTL_FORGETREADERGROUPW:
    {
      ContextAndStringW_Call* call = &op->call.contextAndStringW;
      free(call->sz);
    }
    break;

    case SCARD_IOCTL_INTRODUCEREADERA:
    case SCARD_IOCTL_REMOVEREADERFROMGROUPA:
    case SCARD_IOCTL_ADDREADERTOGROUPA:

    {
      ContextAndTwoStringA_Call* call = &op->call.contextAndTwoStringA;
      free(call->sz1);
      free(call->sz2);
    }
    break;

    case SCARD_IOCTL_INTRODUCEREADERW:
    case SCARD_IOCTL_REMOVEREADERFROMGROUPW:
    case SCARD_IOCTL_ADDREADERTOGROUPW:

    {
      ContextAndTwoStringW_Call* call = &op->call.contextAndTwoStringW;
      free(call->sz1);
      free(call->sz2);
    }
    break;

    case SCARD_IOCTL_LISTREADERSA:
    case SCARD_IOCTL_LISTREADERSW:
    {
      ListReaders_Call* call = &op->call.listReaders;
      free(call->mszGroups);
    }
    break;
    case SCARD_IOCTL_GETSTATUSCHANGEA:
    {
      GetStatusChangeA_Call* call = &op->call.getStatusChangeA;
      free_reader_states_a(call->rgReaderStates, call->cReaders);
    }
    break;

    case SCARD_IOCTL_GETSTATUSCHANGEW:
    {
      GetStatusChangeW_Call* call = &op->call.getStatusChangeW;
      free_reader_states_w(call->rgReaderStates, call->cReaders);
    }
    break;
    case SCARD_IOCTL_GETREADERICON:
    {
      GetReaderIcon_Call* call = &op->call.getReaderIcon;
      free(call->szReaderName);
    }
    break;
    case SCARD_IOCTL_GETDEVICETYPEID:
    {
      GetDeviceTypeId_Call* call = &op->call.getDeviceTypeId;
      free(call->szReaderName);
    }
    break;
    case SCARD_IOCTL_CONNECTA:
    {
      ConnectA_Call* call = &op->call.connectA;
      free(call->szReader);
    }
    break;
    case SCARD_IOCTL_CONNECTW:
    {
      ConnectW_Call* call = &op->call.connectW;
      free(call->szReader);
    }
    break;
    case SCARD_IOCTL_SETATTRIB:
      free(op->call.setAttrib.pbAttr);
      break;
    case SCARD_IOCTL_TRANSMIT:
    {
      Transmit_Call* call = &op->call.transmit;
      free(call->pbSendBuffer);
      free(call->pioSendPci);
      free(call->pioRecvPci);
    }
    break;
    case SCARD_IOCTL_CONTROL:
    {
      Control_Call* call = &op->call.control;
      free(call->pvInBuffer);
    }
    break;
    case SCARD_IOCTL_READCACHEA:
    {
      ReadCacheA_Call* call = &op->call.readCacheA;
      free(call->szLookupName);
      free(call->Common.CardIdentifier);
    }
    break;
    case SCARD_IOCTL_READCACHEW:
    {
      ReadCacheW_Call* call = &op->call.readCacheW;
      free(call->szLookupName);
      free(call->Common.CardIdentifier);
    }
    break;
    case SCARD_IOCTL_WRITECACHEA:
    {
      WriteCacheA_Call* call = &op->call.writeCacheA;
      free(call->szLookupName);
      free(call->Common.CardIdentifier);
      free(call->Common.pbData);
    }
    break;
    case SCARD_IOCTL_WRITECACHEW:
    {
      WriteCacheW_Call* call = &op->call.writeCacheW;
      free(call->szLookupName);
      free(call->Common.CardIdentifier);
      free(call->Common.pbData);
    }
    break;
    default:
      break;
  }

  {
    SMARTCARD_OPERATION empty = { 0 };
    *op = empty;
  }

  if (allocated)
    free(op);
}

Coverage Report

Created: 2025-07-01 06:46