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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); | |
476aed35 | 113 | struct wpa_bss_anqp *anqp = NULL; |
25471fe3 JK |
114 | |
115 | if (slen < 2) | |
116 | return; | |
117 | ||
476aed35 JM |
118 | if (bss) |
119 | anqp = bss->anqp; | |
120 | ||
25471fe3 JK |
121 | subtype = *pos++; |
122 | slen--; | |
123 | ||
124 | pos++; /* Reserved */ | |
125 | slen--; | |
126 | ||
127 | switch (subtype) { | |
128 | case HS20_STYPE_CAPABILITY_LIST: | |
129 | wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR | |
130 | " HS Capability List", MAC2STR(sa)); | |
131 | wpa_hexdump_ascii(MSG_DEBUG, "HS Capability List", pos, slen); | |
132 | break; | |
133 | case HS20_STYPE_OPERATOR_FRIENDLY_NAME: | |
134 | wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR | |
135 | " Operator Friendly Name", MAC2STR(sa)); | |
136 | wpa_hexdump_ascii(MSG_DEBUG, "oper friendly name", pos, slen); | |
476aed35 JM |
137 | if (anqp) { |
138 | wpabuf_free(anqp->hs20_operator_friendly_name); | |
139 | anqp->hs20_operator_friendly_name = | |
25471fe3 JK |
140 | wpabuf_alloc_copy(pos, slen); |
141 | } | |
142 | break; | |
143 | case HS20_STYPE_WAN_METRICS: | |
144 | wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR | |
145 | " WAN Metrics", MAC2STR(sa)); | |
146 | wpa_hexdump_ascii(MSG_DEBUG, "WAN Metrics", pos, slen); | |
476aed35 JM |
147 | if (anqp) { |
148 | wpabuf_free(anqp->hs20_wan_metrics); | |
149 | anqp->hs20_wan_metrics = wpabuf_alloc_copy(pos, slen); | |
25471fe3 JK |
150 | } |
151 | break; | |
152 | case HS20_STYPE_CONNECTION_CAPABILITY: | |
153 | wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR | |
154 | " Connection Capability", MAC2STR(sa)); | |
155 | wpa_hexdump_ascii(MSG_DEBUG, "conn capability", pos, slen); | |
476aed35 JM |
156 | if (anqp) { |
157 | wpabuf_free(anqp->hs20_connection_capability); | |
158 | anqp->hs20_connection_capability = | |
25471fe3 JK |
159 | wpabuf_alloc_copy(pos, slen); |
160 | } | |
161 | break; | |
162 | case HS20_STYPE_OPERATING_CLASS: | |
163 | wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR | |
164 | " Operating Class", MAC2STR(sa)); | |
165 | wpa_hexdump_ascii(MSG_DEBUG, "Operating Class", pos, slen); | |
476aed35 JM |
166 | if (anqp) { |
167 | wpabuf_free(anqp->hs20_operating_class); | |
168 | anqp->hs20_operating_class = | |
25471fe3 JK |
169 | wpabuf_alloc_copy(pos, slen); |
170 | } | |
171 | break; | |
172 | default: | |
173 | wpa_printf(MSG_DEBUG, "HS20: Unsupported subtype %u", subtype); | |
174 | break; | |
175 | } | |
176 | } |