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/*
* Copyright (c) 2022 Yubico AB. All rights reserved.
* Use of this source code is governed by a BSD-style
* license that can be found in the LICENSE file.
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <assert.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <winscard.h>
#include "mutator_aux.h"
static const struct blob *reader_list;
static int (*xread)(void *, u_char *, size_t, int);
static int (*xwrite)(void *, const u_char *, size_t);
static void (*xconsume)(const void *, size_t);
LONG __wrap_SCardEstablishContext(DWORD, LPCVOID, LPCVOID, LPSCARDCONTEXT);
LONG __wrap_SCardListReaders(SCARDCONTEXT, LPCSTR, LPSTR, LPDWORD);
LONG __wrap_SCardReleaseContext(SCARDCONTEXT);
LONG __wrap_SCardConnect(SCARDCONTEXT, LPCSTR, DWORD, DWORD, LPSCARDHANDLE,
LPDWORD);
LONG __wrap_SCardDisconnect(SCARDHANDLE, DWORD);
LONG __wrap_SCardTransmit(SCARDHANDLE, const SCARD_IO_REQUEST *, LPCBYTE,
DWORD, SCARD_IO_REQUEST *, LPBYTE, LPDWORD);
LONG
__wrap_SCardEstablishContext(DWORD dwScope, LPCVOID pvReserved1,
LPCVOID pvReserved2, LPSCARDCONTEXT phContext)
{
assert(dwScope == SCARD_SCOPE_SYSTEM);
assert(pvReserved1 == NULL);
assert(pvReserved2 == NULL);
*phContext = 1;
if (uniform_random(400) < 1)
return SCARD_E_NO_SERVICE;
if (uniform_random(400) < 1)
return SCARD_E_NO_SMARTCARD;
if (uniform_random(400) < 1)
return SCARD_E_NO_MEMORY;
if (uniform_random(400) < 1)
*phContext = 0;
return SCARD_S_SUCCESS;
}
LONG
__wrap_SCardListReaders(SCARDCONTEXT hContext, LPCSTR mszGroups,
LPSTR mszReaders, LPDWORD pcchReaders)
{
assert(hContext == 1);
assert(mszGroups == NULL);
assert(mszReaders != NULL);
assert(pcchReaders != 0);
if (reader_list == NULL || uniform_random(400) < 1)
return SCARD_E_NO_READERS_AVAILABLE;
if (uniform_random(400) < 1)
return SCARD_E_NO_MEMORY;
memcpy(mszReaders, reader_list->body, reader_list->len > *pcchReaders ?
*pcchReaders : reader_list->len);
*pcchReaders = (DWORD)reader_list->len; /* on purpose */
return SCARD_S_SUCCESS;
}
LONG
__wrap_SCardReleaseContext(SCARDCONTEXT hContext)
{
assert(hContext == 1);
return SCARD_S_SUCCESS;
}
LONG
__wrap_SCardConnect(SCARDCONTEXT hContext, LPCSTR szReader, DWORD dwShareMode,
DWORD dwPreferredProtocols, LPSCARDHANDLE phCard, LPDWORD pdwActiveProtocol)
{
uint32_t r;
assert(hContext == 1);
xconsume(szReader, strlen(szReader) + 1);
assert(dwShareMode == SCARD_SHARE_SHARED);
assert(dwPreferredProtocols == SCARD_PROTOCOL_ANY);
assert(phCard != NULL);
assert(pdwActiveProtocol != NULL);
if ((r = uniform_random(400)) < 1)
return SCARD_E_UNEXPECTED;
*phCard = 1;
*pdwActiveProtocol = (r & 1) ? SCARD_PROTOCOL_T0 : SCARD_PROTOCOL_T1;
if (uniform_random(400) < 1)
*pdwActiveProtocol = SCARD_PROTOCOL_RAW;
return SCARD_S_SUCCESS;
}
LONG
__wrap_SCardDisconnect(SCARDHANDLE hCard, DWORD dwDisposition)
{
assert(hCard == 1);
assert(dwDisposition == SCARD_LEAVE_CARD);
return SCARD_S_SUCCESS;
}
extern void consume(const void *body, size_t len);
LONG
__wrap_SCardTransmit(SCARDHANDLE hCard, const SCARD_IO_REQUEST *pioSendPci,
LPCBYTE pbSendBuffer, DWORD cbSendLength, SCARD_IO_REQUEST *pioRecvPci,
LPBYTE pbRecvBuffer, LPDWORD pcbRecvLength)
{
void *ioh = (void *)NFC_DEV_HANDLE;
int n;
assert(hCard == 1);
xconsume(pioSendPci, sizeof(*pioSendPci));
xwrite(ioh, pbSendBuffer, cbSendLength);
assert(pioRecvPci == NULL);
if (uniform_random(400) < 1 ||
(n = xread(ioh, pbRecvBuffer, *pcbRecvLength, -1)) == -1)
return SCARD_E_UNEXPECTED;
*pcbRecvLength = (DWORD)n;
return SCARD_S_SUCCESS;
}
void
set_pcsc_parameters(const struct blob *reader_list_ptr)
{
reader_list = reader_list_ptr;
}
void
set_pcsc_io_functions(int (*read_f)(void *, u_char *, size_t, int),
int (*write_f)(void *, const u_char *, size_t),
void (*consume_f)(const void *, size_t))
{
xread = read_f;
xwrite = write_f;
xconsume = consume_f;
}
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