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hostapd: Force PSK to be derived again on BSS reload

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This may be needed if the wpa_psk information for previously derived
from passphrase and either the SSID or the passphrase has changed.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
This commit is contained in:
Jouni Malinen 2013-10-29 16:55:15 +02:00 committed by Jouni Malinen
parent 9f104b0324
commit a781e211f9
3 changed files with 20 additions and 2 deletions
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4
hostapd/config_file.c
View File

@ -2181,8 +2181,11 @@ static int hostapd_config_fill(struct hostapd_config *conf,
} else { } else {
os_free(bss->ssid.wpa_passphrase); os_free(bss->ssid.wpa_passphrase);
bss->ssid.wpa_passphrase = os_strdup(pos); bss->ssid.wpa_passphrase = os_strdup(pos);
if (bss->ssid.wpa_passphrase) {
os_free(bss->ssid.wpa_psk); os_free(bss->ssid.wpa_psk);
bss->ssid.wpa_psk = NULL; bss->ssid.wpa_psk = NULL;
bss->ssid.wpa_passphrase_set = 1;
}
} }
} else if (os_strcmp(buf, "wpa_psk") == 0) { } else if (os_strcmp(buf, "wpa_psk") == 0) {
os_free(bss->ssid.wpa_psk); os_free(bss->ssid.wpa_psk);
@ -2200,6 +2203,7 @@ static int hostapd_config_fill(struct hostapd_config *conf,
bss->ssid.wpa_psk->group = 1; bss->ssid.wpa_psk->group = 1;
os_free(bss->ssid.wpa_passphrase); os_free(bss->ssid.wpa_passphrase);
bss->ssid.wpa_passphrase = NULL; bss->ssid.wpa_passphrase = NULL;
bss->ssid.wpa_psk_set = 1;
} }
} else if (os_strcmp(buf, "wpa_psk_file") == 0) { } else if (os_strcmp(buf, "wpa_psk_file") == 0) {
os_free(bss->ssid.wpa_psk_file); os_free(bss->ssid.wpa_psk_file);

2
src/ap/ap_config.h
View File

@ -53,6 +53,8 @@ struct hostapd_ssid {
size_t ssid_len; size_t ssid_len;
unsigned int ssid_set:1; unsigned int ssid_set:1;
unsigned int utf8_ssid:1; unsigned int utf8_ssid:1;
unsigned int wpa_passphrase_set:1;
unsigned int wpa_psk_set:1;
char vlan[IFNAMSIZ + 1]; char vlan[IFNAMSIZ + 1];
secpolicy security_policy; secpolicy security_policy;

12
src/ap/hostapd.c
View File

@ -62,10 +62,22 @@ int hostapd_for_each_interface(struct hapd_interfaces *interfaces,
static void hostapd_reload_bss(struct hostapd_data *hapd) static void hostapd_reload_bss(struct hostapd_data *hapd)
{ {
struct hostapd_ssid *ssid;
#ifndef CONFIG_NO_RADIUS #ifndef CONFIG_NO_RADIUS
radius_client_reconfig(hapd->radius, hapd->conf->radius); radius_client_reconfig(hapd->radius, hapd->conf->radius);
#endif /* CONFIG_NO_RADIUS */ #endif /* CONFIG_NO_RADIUS */
ssid = &hapd->conf->ssid;
if (!ssid->wpa_psk_set && ssid->wpa_psk && !ssid->wpa_psk->next &&
ssid->wpa_passphrase_set && ssid->wpa_passphrase) {
/*
* Force PSK to be derived again since SSID or passphrase may
* have changed.
*/
os_free(ssid->wpa_psk);
ssid->wpa_psk = NULL;
}
if (hostapd_setup_wpa_psk(hapd->conf)) { if (hostapd_setup_wpa_psk(hapd->conf)) {
wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK " wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
"after reloading configuration"); "after reloading configuration");