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hostapd/src/ap/hs20.c
Veerendranath Jakkam 6f92f81dac AP: Check driver's capability to enable OCV when driver SME is used 
When the driver SME is used, offloaded handshakes which need Operating
Channel Validation (OCV) such as SA Query procedure, etc. would fail if
hostapd enables OCV based on configuration but the driver doesn't
support OCV. To avoid this when driver SME is used, enable OCV from
hostapd only when the driver indicates support for OCV.

This commit also adds a capability flag to indicate whether driver SME
is used in AP mode.

Signed-off-by: Veerendranath Jakkam <vjakkam@codeaurora.org>
2021-02-16 00:47:43 +02:00

255 lines
6.3 KiB
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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 "common/wpa_ctrl.h"
#include "hostapd.h"
#include "ap_config.h"
#include "ap_drv_ops.h"
#include "sta_info.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++ = hapd->conf->hs20_release < 2 ? 5 : 7;
WPA_PUT_BE24(eid, OUI_WFA);
eid += 3;
*eid++ = HS20_INDICATION_OUI_TYPE;
conf = (hapd->conf->hs20_release - 1) << 4; /* Release Number */
if (hapd->conf->hs20_release >= 2)
conf |= HS20_ANQP_DOMAIN_ID_PRESENT;
if (hapd->conf->disable_dgaf)
conf |= HS20_DGAF_DISABLED;
*eid++ = conf;
if (hapd->conf->hs20_release >= 2) {
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);
}
if (hapd->conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
capab |= WPA_CAPABILITY_MFPC;
if (hapd->conf->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED)
capab |= WPA_CAPABILITY_MFPR;
}
#ifdef CONFIG_OCV
if (hapd->conf->ocv &&
(hapd->iface->drv_flags2 &
(WPA_DRIVER_FLAGS2_AP_SME | WPA_DRIVER_FLAGS2_OCV)))
capab |= WPA_CAPABILITY_OCVC;
#endif /* CONFIG_OCV */
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;
}
int hs20_send_wnm_notification_t_c(struct hostapd_data *hapd,
const u8 *addr, const char *url)
{
struct wpabuf *buf;
int ret;
size_t url_len;
if (!url) {
wpa_printf(MSG_INFO, "HS 2.0: No T&C Server URL available");
return -1;
}
url_len = os_strlen(url);
if (5 + url_len > 255) {
wpa_printf(MSG_INFO,
"HS 2.0: Too long T&C Server URL for WNM-Notification: '%s'",
url);
return -1;
}
buf = wpabuf_alloc(4 + 7 + url_len);
if (!buf)
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 */
/* Terms and Conditions Acceptance subelement */
wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC);
wpabuf_put_u8(buf, 4 + 1 + url_len);
wpabuf_put_be24(buf, OUI_WFA);
wpabuf_put_u8(buf, HS20_WNM_T_C_ACCEPTANCE);
wpabuf_put_u8(buf, url_len);
wpabuf_put_str(buf, url);
ret = hostapd_drv_send_action(hapd, hapd->iface->freq, 0, addr,
wpabuf_head(buf), wpabuf_len(buf));
wpabuf_free(buf);
return ret;
}
void hs20_t_c_filtering(struct hostapd_data *hapd, struct sta_info *sta,
int enabled)
{
if (enabled) {
wpa_printf(MSG_DEBUG,
"HS 2.0: Terms and Conditions filtering required for "
MACSTR, MAC2STR(sta->addr));
sta->hs20_t_c_filtering = 1;
/* TODO: Enable firewall filtering for the STA */
wpa_msg(hapd->msg_ctx, MSG_INFO, HS20_T_C_FILTERING_ADD MACSTR,
MAC2STR(sta->addr));
} else {
wpa_printf(MSG_DEBUG,
"HS 2.0: Terms and Conditions filtering not required for "
MACSTR, MAC2STR(sta->addr));
sta->hs20_t_c_filtering = 0;
/* TODO: Disable firewall filtering for the STA */
wpa_msg(hapd->msg_ctx, MSG_INFO,
HS20_T_C_FILTERING_REMOVE MACSTR, MAC2STR(sta->addr));
}
}
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