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/*
* Hotspot 2.0 AP ANQP processing
* Copyright (c) 2009, Atheros Communications, Inc.
* Copyright (c) 2011-2013, Qualcomm Atheros, Inc.
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "includes.h"
#include "common.h"
#include "common/ieee802_11_defs.h"
#include "hostapd.h"
#include "ap_config.h"
#include "ap_drv_ops.h"
#include "hs20.h"
u8 * hostapd_eid_hs20_indication(struct hostapd_data *hapd, u8 *eid)
{
u8 conf;
if (!hapd->conf->hs20)
return eid;
*eid++ = WLAN_EID_VENDOR_SPECIFIC;
*eid++ = 7;
WPA_PUT_BE24(eid, OUI_WFA);
eid += 3;
*eid++ = HS20_INDICATION_OUI_TYPE;
conf = HS20_VERSION; /* Release Number */
conf |= HS20_ANQP_DOMAIN_ID_PRESENT;
if (hapd->conf->disable_dgaf)
conf |= HS20_DGAF_DISABLED;
*eid++ = conf;
WPA_PUT_LE16(eid, hapd->conf->anqp_domain_id);
eid += 2;
return eid;
}
u8 * hostapd_eid_osen(struct hostapd_data *hapd, u8 *eid)
{
u8 *len;
u16 capab;
if (!hapd->conf->osen)
return eid;
*eid++ = WLAN_EID_VENDOR_SPECIFIC;
len = eid++; /* to be filled */
WPA_PUT_BE24(eid, OUI_WFA);
eid += 3;
*eid++ = HS20_OSEN_OUI_TYPE;
/* Group Data Cipher Suite */
RSN_SELECTOR_PUT(eid, RSN_CIPHER_SUITE_NO_GROUP_ADDRESSED);
eid += RSN_SELECTOR_LEN;
/* Pairwise Cipher Suite Count and List */
WPA_PUT_LE16(eid, 1);
eid += 2;
RSN_SELECTOR_PUT(eid, RSN_CIPHER_SUITE_CCMP);
eid += RSN_SELECTOR_LEN;
/* AKM Suite Count and List */
WPA_PUT_LE16(eid, 1);
eid += 2;
RSN_SELECTOR_PUT(eid, RSN_AUTH_KEY_MGMT_OSEN);
eid += RSN_SELECTOR_LEN;
/* RSN Capabilities */
capab = 0;
if (hapd->conf->wmm_enabled) {
/* 4 PTKSA replay counters when using WMM */
capab |= (RSN_NUM_REPLAY_COUNTERS_16 << 2);
}
#ifdef CONFIG_IEEE80211W
if (hapd->conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
capab |= WPA_CAPABILITY_MFPC;
if (hapd->conf->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED)
capab |= WPA_CAPABILITY_MFPR;
}
#endif /* CONFIG_IEEE80211W */
WPA_PUT_LE16(eid, capab);
eid += 2;
*len = eid - len - 1;
return eid;
}
int hs20_send_wnm_notification(struct hostapd_data *hapd, const u8 *addr,
u8 osu_method, const char *url)
{
struct wpabuf *buf;
size_t len = 0;
int ret;
/* TODO: should refuse to send notification if the STA is not associated
* or if the STA did not indicate support for WNM-Notification */
if (url) {
len = 1 + os_strlen(url);
if (5 + len > 255) {
wpa_printf(MSG_INFO, "HS 2.0: Too long URL for "
"WNM-Notification: '%s'", url);
return -1;
}
}
buf = wpabuf_alloc(4 + 7 + len);
if (buf == NULL)
return -1;
wpabuf_put_u8(buf, WLAN_ACTION_WNM);
wpabuf_put_u8(buf, WNM_NOTIFICATION_REQ);
wpabuf_put_u8(buf, 1); /* Dialog token */
wpabuf_put_u8(buf, 1); /* Type - 1 reserved for WFA */
/* Subscription Remediation subelement */
wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC);
wpabuf_put_u8(buf, 5 + len);
wpabuf_put_be24(buf, OUI_WFA);
wpabuf_put_u8(buf, HS20_WNM_SUB_REM_NEEDED);
if (url) {
wpabuf_put_u8(buf, len - 1);
wpabuf_put_data(buf, url, len - 1);
wpabuf_put_u8(buf, osu_method);
} else {
/* Server URL and Server Method fields not included */
wpabuf_put_u8(buf, 0);
}
ret = hostapd_drv_send_action(hapd, hapd->iface->freq, 0, addr,
wpabuf_head(buf), wpabuf_len(buf));
wpabuf_free(buf);
return ret;
}
int hs20_send_wnm_notification_deauth_req(struct hostapd_data *hapd,
const u8 *addr,
const struct wpabuf *payload)
{
struct wpabuf *buf;
int ret;
/* TODO: should refuse to send notification if the STA is not associated
* or if the STA did not indicate support for WNM-Notification */
buf = wpabuf_alloc(4 + 6 + wpabuf_len(payload));
if (buf == NULL)
return -1;
wpabuf_put_u8(buf, WLAN_ACTION_WNM);
wpabuf_put_u8(buf, WNM_NOTIFICATION_REQ);
wpabuf_put_u8(buf, 1); /* Dialog token */
wpabuf_put_u8(buf, 1); /* Type - 1 reserved for WFA */
/* Deauthentication Imminent Notice subelement */
wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC);
wpabuf_put_u8(buf, 4 + wpabuf_len(payload));
wpabuf_put_be24(buf, OUI_WFA);
wpabuf_put_u8(buf, HS20_WNM_DEAUTH_IMMINENT_NOTICE);
wpabuf_put_buf(buf, payload);
ret = hostapd_drv_send_action(hapd, hapd->iface->freq, 0, addr,
wpabuf_head(buf), wpabuf_len(buf));
wpabuf_free(buf);
return ret;
}
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