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hostapd: Check driver parameter before replacing previous value 

This leaves the previously configured value in place if "SET driver ..."
command fails.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2016-12-27 11:33:35 +02:00
parent eb89361bde
commit 8628555f9b
1 changed files with 5 additions and 4 deletions
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9
hostapd/config_file.c
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@ -2055,20 +2055,21 @@ static int hostapd_config_fill(struct hostapd_config *conf,
os_strlcpy(bss->wds_bridge, pos, sizeof(bss->wds_bridge));
} else if (os_strcmp(buf, "driver") == 0) {
int j;
/* clear to get error below if setting is invalid */
conf->driver = NULL;
const struct wpa_driver_ops *driver = NULL;
for (j = 0; wpa_drivers[j]; j++) {
if (os_strcmp(pos, wpa_drivers[j]->name) == 0) {
conf->driver = wpa_drivers[j];
driver = wpa_drivers[j];
break;
}
}
if (conf->driver == NULL) {
if (!driver) {
wpa_printf(MSG_ERROR,
"Line %d: invalid/unknown driver '%s'",
line, pos);
return 1;
}
conf->driver = driver;
} else if (os_strcmp(buf, "driver_params") == 0) {
os_free(conf->driver_params);
conf->driver_params = os_strdup(pos);