| Message ID | 2bbb0374d7fd390a04ceb8d7b552f1a8d946c0f0.1447880230.git.stillcompiling@gmail.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | a20874f78be633b9e3a505d5f191735188b110a5 |
| Headers | show |
diff --git a/tools/spi/spidev_test.c b/tools/spi/spidev_test.c index 02fc3a4..322370d 100644 --- a/tools/spi/spidev_test.c +++ b/tools/spi/spidev_test.c @@ -86,13 +86,17 @@ static void hex_dump(const void *src, size_t length, size_t line_size, char *pre static int unescape(char *_dst, char *_src, size_t len) { int ret = 0; + int match; char *src = _src; char *dst = _dst; unsigned int ch; while (*src) { if (*src == '\\' && *(src+1) == 'x') { - sscanf(src + 2, "%2x", &ch); + match = sscanf(src + 2, "%2x", &ch); + if (!match) + pabort("malformed input string"); + src += 4; *dst++ = (unsigned char)ch; } else {
Check the result of sscanf to verify a result was found. report and error and abort if pattern was not found. Signed-off-by: Joshua Clayton <stillcompiling@gmail.com> --- tools/spi/spidev_test.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)