hostap/wpa_supplicant/hs20_supplicant.c
Jouni Malinen 476aed355a Interworking: Move BSS ANQP information into separate struct
This is an initial step in allowing the ANQP responses to be shared
among multiple BSSes if the BSSes are determined to be operating under
identical configuration.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
2012-09-04 16:22:35 +03:00

176 lines
4.4 KiB
C

/*
* Copyright (c) 2009, Atheros Communications, Inc.
* Copyright (c) 2011-2012, 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 "eloop.h"
#include "common/ieee802_11_common.h"
#include "common/ieee802_11_defs.h"
#include "common/gas.h"
#include "common/wpa_ctrl.h"
#include "wpa_supplicant_i.h"
#include "driver_i.h"
#include "config.h"
#include "bss.h"
#include "gas_query.h"
#include "interworking.h"
#include "hs20_supplicant.h"
void wpas_hs20_add_indication(struct wpabuf *buf)
{
wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC);
wpabuf_put_u8(buf, 5);
wpabuf_put_be24(buf, OUI_WFA);
wpabuf_put_u8(buf, HS20_INDICATION_OUI_TYPE);
wpabuf_put_u8(buf, 0x00); /* Hotspot Configuration */
}
struct wpabuf * hs20_build_anqp_req(u32 stypes, const u8 *payload,
size_t payload_len)
{
struct wpabuf *buf;
u8 *len_pos;
buf = gas_anqp_build_initial_req(0, 100 + payload_len);
if (buf == NULL)
return NULL;
len_pos = gas_anqp_add_element(buf, ANQP_VENDOR_SPECIFIC);
wpabuf_put_be24(buf, OUI_WFA);
wpabuf_put_u8(buf, HS20_ANQP_OUI_TYPE);
if (stypes == BIT(HS20_STYPE_NAI_HOME_REALM_QUERY)) {
wpabuf_put_u8(buf, HS20_STYPE_NAI_HOME_REALM_QUERY);
wpabuf_put_u8(buf, 0); /* Reserved */
if (payload)
wpabuf_put_data(buf, payload, payload_len);
} else {
u8 i;
wpabuf_put_u8(buf, HS20_STYPE_QUERY_LIST);
wpabuf_put_u8(buf, 0); /* Reserved */
for (i = 0; i < 32; i++) {
if (stypes & BIT(i))
wpabuf_put_u8(buf, i);
}
}
gas_anqp_set_element_len(buf, len_pos);
gas_anqp_set_len(buf);
return buf;
}
int hs20_anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst, u32 stypes,
const u8 *payload, size_t payload_len)
{
struct wpabuf *buf;
int ret = 0;
int freq;
struct wpa_bss *bss;
int res;
freq = wpa_s->assoc_freq;
bss = wpa_bss_get_bssid(wpa_s, dst);
if (bss)
freq = bss->freq;
if (freq <= 0)
return -1;
wpa_printf(MSG_DEBUG, "HS20: ANQP Query Request to " MACSTR " for "
"subtypes 0x%x", MAC2STR(dst), stypes);
buf = hs20_build_anqp_req(stypes, payload, payload_len);
if (buf == NULL)
return -1;
res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s);
if (res < 0) {
wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
ret = -1;
} else
wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
"%u", res);
wpabuf_free(buf);
return ret;
}
void hs20_parse_rx_hs20_anqp_resp(struct wpa_supplicant *wpa_s,
const u8 *sa, const u8 *data, size_t slen)
{
const u8 *pos = data;
u8 subtype;
struct wpa_bss *bss = wpa_bss_get_bssid(wpa_s, sa);
struct wpa_bss_anqp *anqp = NULL;
if (slen < 2)
return;
if (bss)
anqp = bss->anqp;
subtype = *pos++;
slen--;
pos++; /* Reserved */
slen--;
switch (subtype) {
case HS20_STYPE_CAPABILITY_LIST:
wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
" HS Capability List", MAC2STR(sa));
wpa_hexdump_ascii(MSG_DEBUG, "HS Capability List", pos, slen);
break;
case HS20_STYPE_OPERATOR_FRIENDLY_NAME:
wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
" Operator Friendly Name", MAC2STR(sa));
wpa_hexdump_ascii(MSG_DEBUG, "oper friendly name", pos, slen);
if (anqp) {
wpabuf_free(anqp->hs20_operator_friendly_name);
anqp->hs20_operator_friendly_name =
wpabuf_alloc_copy(pos, slen);
}
break;
case HS20_STYPE_WAN_METRICS:
wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
" WAN Metrics", MAC2STR(sa));
wpa_hexdump_ascii(MSG_DEBUG, "WAN Metrics", pos, slen);
if (anqp) {
wpabuf_free(anqp->hs20_wan_metrics);
anqp->hs20_wan_metrics = wpabuf_alloc_copy(pos, slen);
}
break;
case HS20_STYPE_CONNECTION_CAPABILITY:
wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
" Connection Capability", MAC2STR(sa));
wpa_hexdump_ascii(MSG_DEBUG, "conn capability", pos, slen);
if (anqp) {
wpabuf_free(anqp->hs20_connection_capability);
anqp->hs20_connection_capability =
wpabuf_alloc_copy(pos, slen);
}
break;
case HS20_STYPE_OPERATING_CLASS:
wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
" Operating Class", MAC2STR(sa));
wpa_hexdump_ascii(MSG_DEBUG, "Operating Class", pos, slen);
if (anqp) {
wpabuf_free(anqp->hs20_operating_class);
anqp->hs20_operating_class =
wpabuf_alloc_copy(pos, slen);
}
break;
default:
wpa_printf(MSG_DEBUG, "HS20: Unsupported subtype %u", subtype);
break;
}
}