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reader-pcsc: Add a way to create corpus files for fuzzing

This commit is contained in:
Jakub Jelen 2019-12-09 18:40:39 +01:00
parent 1742dfc045
commit 23fcccecf4
1 changed files with 21 additions and 0 deletions
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21
src/libopensc/reader-pcsc.c
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@ -78,6 +78,25 @@
#define PCSC_TRACE(reader, desc, rv) do { sc_log(reader->ctx, "%s:" desc ": 0x%08lx\n", reader->name, (unsigned long)((ULONG)rv)); } while (0)
#define PCSC_LOG(ctx, desc, rv) do { sc_log(ctx, desc ": 0x%08lx\n", (unsigned long)((ULONG)rv)); } while (0)
/* #define APDU_LOG_FILE "apdulog" */
#ifdef APDU_LOG_FILE
void APDU_LOG(u8 *rbuf, uint16_t rsize)
{
static FILE *fd = NULL;
u8 *lenb = (u8*)&rsize;
if (fd == NULL) {
fd = fopen(APDU_LOG_FILE, "w");
}
/* First two bytes denote the length */
(void) fwrite(lenb, 2, 1, fd);
(void) fwrite(rbuf, rsize, 1, fd);
fflush(fd);
}
#else
#define APDU_LOG(rbuf, rsize)
#endif
struct pcsc_global_private_data {
int cardmod;
SCARDCONTEXT pcsc_ctx;
@ -305,6 +324,7 @@ static int pcsc_transmit(sc_reader_t *reader, sc_apdu_t *apdu)
goto out;
}
sc_apdu_log(reader->ctx, rbuf, rsize, 0);
APDU_LOG(rbuf, (uint16_t)rsize);
/* set response */
r = sc_apdu_set_resp(reader->ctx, apdu, rbuf, rsize);
@ -402,6 +422,7 @@ static int refresh_attributes(sc_reader_t *reader)
if (memcmp(priv->reader_state.rgbAtr, reader->atr.value, priv->reader_state.cbAtr) != 0) {
reader->atr.len = priv->reader_state.cbAtr;
memcpy(reader->atr.value, priv->reader_state.rgbAtr, reader->atr.len);
APDU_LOG(reader->atr.value, (uint16_t) reader->atr.len);
}
/* Is the reader in use by some other application ? */