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FILS: Add support for building FILS Realm Information ANQP-element 

This allows full list of hashed realm names to be fetched from hostapd.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2016-12-17 22:02:06 +02:00
parent 9cad618679
commit 8183aee6cc
2 changed files with 56 additions and 6 deletions
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60
src/ap/gas_serv.c
View File

@ -261,10 +261,13 @@ static void anqp_add_capab_list(struct hostapd_data *hapd,
wpabuf_put_le16(buf, ANQP_EMERGENCY_NAI);
if (get_anqp_elem(hapd, ANQP_NEIGHBOR_REPORT))
wpabuf_put_le16(buf, ANQP_NEIGHBOR_REPORT);
for (id = 273; id < 277; id++) {
if (get_anqp_elem(hapd, id))
wpabuf_put_le16(buf, id);
}
#ifdef CONFIG_FILS
if (!dl_list_empty(&hapd->conf->fils_realms) ||
get_anqp_elem(hapd, ANQP_FILS_REALM_INFO))
wpabuf_put_le16(buf, ANQP_FILS_REALM_INFO);
#endif /* CONFIG_FILS */
if (get_anqp_elem(hapd, ANQP_CAG))
wpabuf_put_le16(buf, ANQP_CAG);
if (get_anqp_elem(hapd, ANQP_VENUE_URL))
wpabuf_put_le16(buf, ANQP_VENUE_URL);
if (get_anqp_elem(hapd, ANQP_ADVICE_OF_CHARGE))
@ -554,6 +557,35 @@ static void anqp_add_domain_name(struct hostapd_data *hapd, struct wpabuf *buf)
}
#ifdef CONFIG_FILS
static void anqp_add_fils_realm_info(struct hostapd_data *hapd,
struct wpabuf *buf)
{
size_t count;
if (anqp_add_override(hapd, buf, ANQP_FILS_REALM_INFO))
return;
count = dl_list_len(&hapd->conf->fils_realms);
if (count > 10000)
count = 10000;
if (count) {
struct fils_realm *realm;
wpabuf_put_le16(buf, ANQP_FILS_REALM_INFO);
wpabuf_put_le16(buf, 2 * count);
dl_list_for_each(realm, &hapd->conf->fils_realms,
struct fils_realm, list) {
if (count == 0)
break;
wpabuf_put_data(buf, realm->hash, 2);
}
}
}
#endif /* CONFIG_FILS */
#ifdef CONFIG_HS20
static void anqp_add_operator_friendly_name(struct hostapd_data *hapd,
@ -827,6 +859,10 @@ gas_serv_build_gas_resp_payload(struct hostapd_data *hapd,
len += 1000;
if (request & ANQP_REQ_ICON_REQUEST)
len += 65536;
#ifdef CONFIG_FILS
if (request & ANQP_FILS_REALM_INFO)
len += 2 * dl_list_len(&hapd->conf->fils_realms);
#endif /* CONFIG_FILS */
len += anqp_get_required_len(hapd, extra_req, num_extra_req);
buf = wpabuf_alloc(len);
@ -866,8 +902,15 @@ gas_serv_build_gas_resp_payload(struct hostapd_data *hapd,
if (request & ANQP_REQ_EMERGENCY_NAI)
anqp_add_elem(hapd, buf, ANQP_EMERGENCY_NAI);
for (i = 0; i < num_extra_req; i++)
for (i = 0; i < num_extra_req; i++) {
#ifdef CONFIG_FILS
if (extra_req[i] == ANQP_FILS_REALM_INFO) {
anqp_add_fils_realm_info(hapd, buf);
continue;
}
#endif /* CONFIG_FILS */
anqp_add_elem(hapd, buf, extra_req[i]);
}
#ifdef CONFIG_HS20
if (request & ANQP_REQ_HS_CAPABILITY_LIST)
@ -990,6 +1033,13 @@ static void rx_anqp_query_list_id(struct hostapd_data *hapd, u16 info_id,
get_anqp_elem(hapd, info_id) != NULL, qi);
break;
default:
#ifdef CONFIG_FILS
if (info_id == ANQP_FILS_REALM_INFO &&
!dl_list_empty(&hapd->conf->fils_realms)) {
wpa_printf(MSG_DEBUG,
"ANQP: FILS Realm Information (local)");
} else
#endif /* CONFIG_FILS */
if (!get_anqp_elem(hapd, info_id)) {
wpa_printf(MSG_DEBUG, "ANQP: Unsupported Info Id %u",
info_id);

2
src/common/ieee802_11_defs.h
View File

@ -653,7 +653,7 @@ enum anqp_info_id {
ANQP_NEIGHBOR_REPORT = 272,
ANQP_QUERY_AP_LIST = 273,
ANQP_AP_LIST_RESPONSE = 274,
AMQP_FILS_REALM_INFO = 275,
ANQP_FILS_REALM_INFO = 275,
ANQP_CAG = 276,
ANQP_VENUE_URL = 277,
ANQP_ADVICE_OF_CHARGE = 278,