[thirdparty/hostap.git] / wpa_supplicant / hs20_supplicant.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);

	if (slen < 2)
		return;

	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 (bss) {
			wpabuf_free(bss->hs20_operator_friendly_name);
			bss->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 (bss) {
			wpabuf_free(bss->hs20_wan_metrics);
			bss->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 (bss) {
			wpabuf_free(bss->hs20_connection_capability);
			bss->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 (bss) {
			wpabuf_free(bss->hs20_operating_class);
			bss->hs20_operating_class =
				wpabuf_alloc_copy(pos, slen);
		}
		break;
	default:
		wpa_printf(MSG_DEBUG, "HS20: Unsupported subtype %u", subtype);
		break;
	}
}
Commit	Line	Data
25471fe3 JK	1	/*
	2	* Copyright (c) 2009, Atheros Communications, Inc.
	3	* Copyright (c) 2011-2012, Qualcomm Atheros, Inc.
	4	*
	5	* This software may be distributed under the terms of the BSD license.
	6	* See README for more details.
	7	*/
	8
	9	#include "includes.h"
	10
	11	#include "common.h"
	12	#include "eloop.h"
	13	#include "common/ieee802_11_common.h"
	14	#include "common/ieee802_11_defs.h"
	15	#include "common/gas.h"
	16	#include "common/wpa_ctrl.h"
	17	#include "wpa_supplicant_i.h"
	18	#include "driver_i.h"
	19	#include "config.h"
	20	#include "bss.h"
	21	#include "gas_query.h"
	22	#include "interworking.h"
	23	#include "hs20_supplicant.h"
	24
	25
c923b8a5 JK	26	void wpas_hs20_add_indication(struct wpabuf *buf)
	27	{
	28	wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC);
	29	wpabuf_put_u8(buf, 5);
	30	wpabuf_put_be24(buf, OUI_WFA);
	31	wpabuf_put_u8(buf, HS20_INDICATION_OUI_TYPE);
	32	wpabuf_put_u8(buf, 0x00); /* Hotspot Configuration */
	33	}
	34
	35
25471fe3 JK	36	struct wpabuf * hs20_build_anqp_req(u32 stypes, const u8 *payload,
	37	size_t payload_len)
	38	{
	39	struct wpabuf *buf;
	40	u8 *len_pos;
	41
	42	buf = gas_anqp_build_initial_req(0, 100 + payload_len);
	43	if (buf == NULL)
	44	return NULL;
	45
	46	len_pos = gas_anqp_add_element(buf, ANQP_VENDOR_SPECIFIC);
	47	wpabuf_put_be24(buf, OUI_WFA);
	48	wpabuf_put_u8(buf, HS20_ANQP_OUI_TYPE);
	49	if (stypes == BIT(HS20_STYPE_NAI_HOME_REALM_QUERY)) {
	50	wpabuf_put_u8(buf, HS20_STYPE_NAI_HOME_REALM_QUERY);
	51	wpabuf_put_u8(buf, 0); /* Reserved */
	52	if (payload)
	53	wpabuf_put_data(buf, payload, payload_len);
	54	} else {
	55	u8 i;
	56	wpabuf_put_u8(buf, HS20_STYPE_QUERY_LIST);
	57	wpabuf_put_u8(buf, 0); /* Reserved */
	58	for (i = 0; i < 32; i++) {
	59	if (stypes & BIT(i))
	60	wpabuf_put_u8(buf, i);
	61	}
	62	}
	63	gas_anqp_set_element_len(buf, len_pos);
	64
	65	gas_anqp_set_len(buf);
	66
	67	return buf;
	68	}
	69
	70
	71	int hs20_anqp_send_req(struct wpa_supplicant wpa_s, const u8 dst, u32 stypes,
	72	const u8 *payload, size_t payload_len)
	73	{
	74	struct wpabuf *buf;
	75	int ret = 0;
	76	int freq;
	77	struct wpa_bss *bss;
	78	int res;
	79
	80	freq = wpa_s->assoc_freq;
	81	bss = wpa_bss_get_bssid(wpa_s, dst);
	82	if (bss)
	83	freq = bss->freq;
	84	if (freq <= 0)
	85	return -1;
	86
	87	wpa_printf(MSG_DEBUG, "HS20: ANQP Query Request to " MACSTR " for "
	88	"subtypes 0x%x", MAC2STR(dst), stypes);
	89
	90	buf = hs20_build_anqp_req(stypes, payload, payload_len);
	91	if (buf == NULL)
	92	return -1;
	93
	94	res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s);
	95	if (res < 0) {
	96	wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request");
	97	ret = -1;
	98	} else
	99	wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token "
100	"%u", res);
101
102	wpabuf_free(buf);
103	return ret;
104	}
105
106
107	void hs20_parse_rx_hs20_anqp_resp(struct wpa_supplicant *wpa_s,
108	const u8 sa, const u8 data, size_t slen)
109	{
110	const u8 *pos = data;
111	u8 subtype;
112	struct wpa_bss *bss = wpa_bss_get_bssid(wpa_s, sa);
113
114	if (slen < 2)
115	return;
116
117	subtype = *pos++;
118	slen--;
119
120	pos++; /* Reserved */
121	slen--;
122
123	switch (subtype) {
124	case HS20_STYPE_CAPABILITY_LIST:
125	wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
126	" HS Capability List", MAC2STR(sa));
127	wpa_hexdump_ascii(MSG_DEBUG, "HS Capability List", pos, slen);
128	break;
129	case HS20_STYPE_OPERATOR_FRIENDLY_NAME:
130	wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
131	" Operator Friendly Name", MAC2STR(sa));
132	wpa_hexdump_ascii(MSG_DEBUG, "oper friendly name", pos, slen);
133	if (bss) {
134	wpabuf_free(bss->hs20_operator_friendly_name);
135	bss->hs20_operator_friendly_name =
136	wpabuf_alloc_copy(pos, slen);
137	}
138	break;
139	case HS20_STYPE_WAN_METRICS:
140	wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
141	" WAN Metrics", MAC2STR(sa));
142	wpa_hexdump_ascii(MSG_DEBUG, "WAN Metrics", pos, slen);
143	if (bss) {
144	wpabuf_free(bss->hs20_wan_metrics);
145	bss->hs20_wan_metrics = wpabuf_alloc_copy(pos, slen);
146	}
147	break;
148	case HS20_STYPE_CONNECTION_CAPABILITY:
149	wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
150	" Connection Capability", MAC2STR(sa));
151	wpa_hexdump_ascii(MSG_DEBUG, "conn capability", pos, slen);
152	if (bss) {
153	wpabuf_free(bss->hs20_connection_capability);
154	bss->hs20_connection_capability =
155	wpabuf_alloc_copy(pos, slen);
156	}
157	break;
158	case HS20_STYPE_OPERATING_CLASS:
159	wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR
160	" Operating Class", MAC2STR(sa));
161	wpa_hexdump_ascii(MSG_DEBUG, "Operating Class", pos, slen);
162	if (bss) {
163	wpabuf_free(bss->hs20_operating_class);
164	bss->hs20_operating_class =
165	wpabuf_alloc_copy(pos, slen);
166	}
167	break;
168	default:
169	wpa_printf(MSG_DEBUG, "HS20: Unsupported subtype %u", subtype);
170	break;
171	}
172	}