Amazing-Mirror/fragattacks
1
0
Fork 0
mirror of https://github.com/vanhoefm/fragattacks.git synced 2024-11-28 10:18:21 -05:00
Code Issues Projects Releases Wiki Activity

wpa_supplicant: Parse int values in different bases and reject invalid

Browse Source 
Instead of using atoi(), use strtol() which allows checking if
the configuration values are valid integers and can understand
more than just decimal (also hexadecimal and octal). This not
only allows specifying some fields in hex (which can be useful)
but also rejecting invalid configurations, e.g.,
        disassoc_low_ack=27 * 2
which was previously read as just 27.

Signed-hostap: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2013-03-10 17:55:24 +02:00 committed by Jouni Malinen
parent 725fc39e07
commit eae3a584f5
1 changed files with 20 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
wpa_supplicant/config.c
View File

@ -178,10 +178,17 @@ static int wpa_config_parse_int(const struct parse_data *data,
struct wpa_ssid *ssid,
int line, const char *value)
{
int *dst;
int val, *dst;
char *end;
dst = (int *) (((u8 *) ssid) + (long) data->param1);
*dst = atoi(value);
val = strtol(value, &end, 0);
if (*end) {
wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
line, value);
return -1;
}
*dst = val;
wpa_printf(MSG_MSGDUMP, "%s=%d (0x%x)", data->name, *dst, *dst);
if (data->param3 && *dst < (long) data->param3) {
@ -2590,9 +2597,18 @@ static int wpa_global_config_parse_int(const struct global_parse_data *data,
struct wpa_config *config, int line,
const char *pos)
{
int *dst;
int val, *dst;
char *end;
dst = (int *) (((u8 *) config) + (long) data->param1);
*dst = atoi(pos);
val = strtol(pos, &end, 0);
if (*end) {
wpa_printf(MSG_ERROR, "Line %d: invalid number \"%s\"",
line, pos);
return -1;
}
*dst = val;
wpa_printf(MSG_DEBUG, "%s=%d", data->name, *dst);
if (data->param2 && *dst < (long) data->param2) {