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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 | ||
26 | struct wpabuf * hs20_build_anqp_req(u32 stypes, const u8 *payload, | |
27 | size_t payload_len) | |
28 | { | |
29 | struct wpabuf *buf; | |
30 | u8 *len_pos; | |
31 | ||
32 | buf = gas_anqp_build_initial_req(0, 100 + payload_len); | |
33 | if (buf == NULL) | |
34 | return NULL; | |
35 | ||
36 | len_pos = gas_anqp_add_element(buf, ANQP_VENDOR_SPECIFIC); | |
37 | wpabuf_put_be24(buf, OUI_WFA); | |
38 | wpabuf_put_u8(buf, HS20_ANQP_OUI_TYPE); | |
39 | if (stypes == BIT(HS20_STYPE_NAI_HOME_REALM_QUERY)) { | |
40 | wpabuf_put_u8(buf, HS20_STYPE_NAI_HOME_REALM_QUERY); | |
41 | wpabuf_put_u8(buf, 0); /* Reserved */ | |
42 | if (payload) | |
43 | wpabuf_put_data(buf, payload, payload_len); | |
44 | } else { | |
45 | u8 i; | |
46 | wpabuf_put_u8(buf, HS20_STYPE_QUERY_LIST); | |
47 | wpabuf_put_u8(buf, 0); /* Reserved */ | |
48 | for (i = 0; i < 32; i++) { | |
49 | if (stypes & BIT(i)) | |
50 | wpabuf_put_u8(buf, i); | |
51 | } | |
52 | } | |
53 | gas_anqp_set_element_len(buf, len_pos); | |
54 | ||
55 | gas_anqp_set_len(buf); | |
56 | ||
57 | return buf; | |
58 | } | |
59 | ||
60 | ||
61 | int hs20_anqp_send_req(struct wpa_supplicant *wpa_s, const u8 *dst, u32 stypes, | |
62 | const u8 *payload, size_t payload_len) | |
63 | { | |
64 | struct wpabuf *buf; | |
65 | int ret = 0; | |
66 | int freq; | |
67 | struct wpa_bss *bss; | |
68 | int res; | |
69 | ||
70 | freq = wpa_s->assoc_freq; | |
71 | bss = wpa_bss_get_bssid(wpa_s, dst); | |
72 | if (bss) | |
73 | freq = bss->freq; | |
74 | if (freq <= 0) | |
75 | return -1; | |
76 | ||
77 | wpa_printf(MSG_DEBUG, "HS20: ANQP Query Request to " MACSTR " for " | |
78 | "subtypes 0x%x", MAC2STR(dst), stypes); | |
79 | ||
80 | buf = hs20_build_anqp_req(stypes, payload, payload_len); | |
81 | if (buf == NULL) | |
82 | return -1; | |
83 | ||
84 | res = gas_query_req(wpa_s->gas, dst, freq, buf, anqp_resp_cb, wpa_s); | |
85 | if (res < 0) { | |
86 | wpa_printf(MSG_DEBUG, "ANQP: Failed to send Query Request"); | |
87 | ret = -1; | |
88 | } else | |
89 | wpa_printf(MSG_DEBUG, "ANQP: Query started with dialog token " | |
90 | "%u", res); | |
91 | ||
92 | wpabuf_free(buf); | |
93 | return ret; | |
94 | } | |
95 | ||
96 | ||
97 | void hs20_parse_rx_hs20_anqp_resp(struct wpa_supplicant *wpa_s, | |
98 | const u8 *sa, const u8 *data, size_t slen) | |
99 | { | |
100 | const u8 *pos = data; | |
101 | u8 subtype; | |
102 | struct wpa_bss *bss = wpa_bss_get_bssid(wpa_s, sa); | |
103 | ||
104 | if (slen < 2) | |
105 | return; | |
106 | ||
107 | subtype = *pos++; | |
108 | slen--; | |
109 | ||
110 | pos++; /* Reserved */ | |
111 | slen--; | |
112 | ||
113 | switch (subtype) { | |
114 | case HS20_STYPE_CAPABILITY_LIST: | |
115 | wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR | |
116 | " HS Capability List", MAC2STR(sa)); | |
117 | wpa_hexdump_ascii(MSG_DEBUG, "HS Capability List", pos, slen); | |
118 | break; | |
119 | case HS20_STYPE_OPERATOR_FRIENDLY_NAME: | |
120 | wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR | |
121 | " Operator Friendly Name", MAC2STR(sa)); | |
122 | wpa_hexdump_ascii(MSG_DEBUG, "oper friendly name", pos, slen); | |
123 | if (bss) { | |
124 | wpabuf_free(bss->hs20_operator_friendly_name); | |
125 | bss->hs20_operator_friendly_name = | |
126 | wpabuf_alloc_copy(pos, slen); | |
127 | } | |
128 | break; | |
129 | case HS20_STYPE_WAN_METRICS: | |
130 | wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR | |
131 | " WAN Metrics", MAC2STR(sa)); | |
132 | wpa_hexdump_ascii(MSG_DEBUG, "WAN Metrics", pos, slen); | |
133 | if (bss) { | |
134 | wpabuf_free(bss->hs20_wan_metrics); | |
135 | bss->hs20_wan_metrics = wpabuf_alloc_copy(pos, slen); | |
136 | } | |
137 | break; | |
138 | case HS20_STYPE_CONNECTION_CAPABILITY: | |
139 | wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR | |
140 | " Connection Capability", MAC2STR(sa)); | |
141 | wpa_hexdump_ascii(MSG_DEBUG, "conn capability", pos, slen); | |
142 | if (bss) { | |
143 | wpabuf_free(bss->hs20_connection_capability); | |
144 | bss->hs20_connection_capability = | |
145 | wpabuf_alloc_copy(pos, slen); | |
146 | } | |
147 | break; | |
148 | case HS20_STYPE_OPERATING_CLASS: | |
149 | wpa_msg(wpa_s, MSG_INFO, "RX-HS20-ANQP " MACSTR | |
150 | " Operating Class", MAC2STR(sa)); | |
151 | wpa_hexdump_ascii(MSG_DEBUG, "Operating Class", pos, slen); | |
152 | if (bss) { | |
153 | wpabuf_free(bss->hs20_operating_class); | |
154 | bss->hs20_operating_class = | |
155 | wpabuf_alloc_copy(pos, slen); | |
156 | } | |
157 | break; | |
158 | default: | |
159 | wpa_printf(MSG_DEBUG, "HS20: Unsupported subtype %u", subtype); | |
160 | break; | |
161 | } | |
162 | } |