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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 20:45:25 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 20:45:25 +0000 |
commit | 814d128d1c52fe82be73ecff5b7472378041313f (patch) | |
tree | 581db0c07936d6d608e8c2e72d4903df306dd589 /fuzz/pcsc.c | |
parent | Initial commit. (diff) | |
download | libfido2-814d128d1c52fe82be73ecff5b7472378041313f.tar.xz libfido2-814d128d1c52fe82be73ecff5b7472378041313f.zip |
Adding upstream version 1.14.0.upstream/1.14.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'fuzz/pcsc.c')
-rw-r--r-- | fuzz/pcsc.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/fuzz/pcsc.c b/fuzz/pcsc.c new file mode 100644 index 0000000..f6a3e9b --- /dev/null +++ b/fuzz/pcsc.c @@ -0,0 +1,153 @@ +/* + * 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; +} |