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Replace sscanf() with strtol() in hex2bin()

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This commit is contained in:
pooler 2013-06-09 16:06:46 +02:00
parent c4a5f64019
commit f80163ec4c
1 changed files with 8 additions and 11 deletions
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17
util.c
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@ -458,26 +458,23 @@ char *bin2hex(const unsigned char *p, size_t len)
bool hex2bin(unsigned char *p, const char *hexstr, size_t len)
{
while (*hexstr && len) {
char hex_byte[3];
unsigned int v;
char *ep;
hex_byte[2] = '\0';
while (*hexstr && len) {
if (!hexstr[1]) {
applog(LOG_ERR, "hex2bin str truncated");
return false;
}
hex_byte[0] = hexstr[0];
hex_byte[1] = hexstr[1];
hex_byte[2] = 0;
if (sscanf(hex_byte, "%x", &v) != 1) {
applog(LOG_ERR, "hex2bin sscanf '%s' failed", hex_byte);
*p = (unsigned char) strtol(hex_byte, &ep, 16);
if (*ep) {
applog(LOG_ERR, "hex2bin failed on '%s'", hex_byte);
return false;
}
*p = (unsigned char) v;
p++;
hexstr += 2;
len--;