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Fix cppcheck warning "scanf without field width limits can crash with huge input data"

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Fix following warnings:
[examples/pn53x-tamashell.c:162]: (warning) scanf without field width limits can crash with huge input data
[libnfc/drivers/acr122_pcsc.c:261]: (warning) scanf without field width limits can crash with huge input data
[libnfc/drivers/acr122s.c:441]: (warning) scanf without field width limits can crash with huge input data
[libnfc/drivers/arygon.c:210]: (warning) scanf without field width limits can crash with huge input data
[libnfc/drivers/arygon.c:522]: (warning) scanf without field width limits can crash with huge input data
[libnfc/drivers/pn532_uart.c:187]: (warning) scanf without field width limits can crash with huge input data
[utils/nfc-relay-picc.c:176]: (warning) scanf without field width limits can crash with huge input data
This commit is contained in:
Philippe Teuwen
2013-03-06 00:52:08 +01:00
parent 4769392157
commit d577fda412
6 changed files with 9 additions and 7 deletions
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2
libnfc/drivers/acr122_pcsc.c
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@@ -258,7 +258,7 @@ acr122_pcsc_open(const nfc_context *context, const nfc_connstring connstring)
if (strlen(ndd.pcsc_device_name) < 5) { // We can assume it's a reader ID as pcsc_name always ends with "NN NN"
// Device was not specified, only ID, retrieve it
size_t index;
if (sscanf(ndd.pcsc_device_name, "%lu", &index) != 1)
if (sscanf(ndd.pcsc_device_name, "%4lu", &index) != 1)
return NULL;
nfc_connstring *ncs = malloc(sizeof(nfc_connstring) * (index + 1));
if (!ncs) {