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tools: avoid possible matching of zero length ATR

This commit is contained in:
Viktor Tarasov 2012-06-01 16:04:17 +02:00
parent c7258a6b52
commit 53330f9f89
1 changed files with 1 additions and 1 deletions
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2
src/tools/util.c
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@ -88,7 +88,7 @@ int util_connect_card(sc_context_t *ctx, sc_card_t **cardp,
/* Loop readers, looking for a card with ATR */
for (i = 0; i < sc_ctx_get_reader_count(ctx); i++) {
reader = sc_ctx_get_reader(ctx, i);
if (sc_detect_card_presence(reader) & SC_READER_CARD_PRESENT) {
if ((sc_detect_card_presence(reader) & SC_READER_CARD_PRESENT) && (reader->atr.len > 0)) {
if (!memcmp(reader->atr.value, atr_buf, reader->atr.len)) {
fprintf(stderr, "Matched ATR in reader: %s\n", reader->name);
goto autofound;