1 /*
2 * Hotspot 2.0 AP ANQP processing
3 * Copyright (c) 2009, Atheros Communications, Inc.
4 * Copyright (c) 2011-2013, Qualcomm Atheros, Inc.
5 *
6 * This software may be distributed under the terms of the BSD license.
7 * See README for more details.
8 */
9
10 #include "includes.h"
11
12 #include "common.h"
13 #include "common/ieee802_11_defs.h"
14 #include "common/wpa_ctrl.h"
15 #include "hostapd.h"
16 #include "ap_config.h"
17 #include "ap_drv_ops.h"
18 #include "sta_info.h"
19 #include "hs20.h"
20
21
hostapd_eid_hs20_indication(struct hostapd_data * hapd,u8 * eid)22 u8 * hostapd_eid_hs20_indication(struct hostapd_data *hapd, u8 *eid)
23 {
24 u8 conf;
25 if (!hapd->conf->hs20)
26 return eid;
27 *eid++ = WLAN_EID_VENDOR_SPECIFIC;
28 *eid++ = hapd->conf->hs20_release < 2 ? 5 : 7;
29 WPA_PUT_BE24(eid, OUI_WFA);
30 eid += 3;
31 *eid++ = HS20_INDICATION_OUI_TYPE;
32 conf = (hapd->conf->hs20_release - 1) << 4; /* Release Number */
33 if (hapd->conf->hs20_release >= 2)
34 conf |= HS20_ANQP_DOMAIN_ID_PRESENT;
35 if (hapd->conf->disable_dgaf)
36 conf |= HS20_DGAF_DISABLED;
37 *eid++ = conf;
38 if (hapd->conf->hs20_release >= 2) {
39 WPA_PUT_LE16(eid, hapd->conf->anqp_domain_id);
40 eid += 2;
41 }
42
43 return eid;
44 }
45
46
hs20_send_wnm_notification_deauth_req(struct hostapd_data * hapd,const u8 * addr,const struct wpabuf * payload)47 int hs20_send_wnm_notification_deauth_req(struct hostapd_data *hapd,
48 const u8 *addr,
49 const struct wpabuf *payload)
50 {
51 struct wpabuf *buf;
52 int ret;
53
54 /* TODO: should refuse to send notification if the STA is not associated
55 * or if the STA did not indicate support for WNM-Notification */
56
57 buf = wpabuf_alloc(4 + 6 + wpabuf_len(payload));
58 if (buf == NULL)
59 return -1;
60
61 wpabuf_put_u8(buf, WLAN_ACTION_WNM);
62 wpabuf_put_u8(buf, WNM_NOTIFICATION_REQ);
63 wpabuf_put_u8(buf, 1); /* Dialog token */
64 wpabuf_put_u8(buf, 1); /* Type - 1 reserved for WFA */
65
66 /* Deauthentication Imminent Notice subelement */
67 wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC);
68 wpabuf_put_u8(buf, 4 + wpabuf_len(payload));
69 wpabuf_put_be24(buf, OUI_WFA);
70 wpabuf_put_u8(buf, HS20_WNM_DEAUTH_IMMINENT_NOTICE);
71 wpabuf_put_buf(buf, payload);
72
73 ret = hostapd_drv_send_action(hapd, hapd->iface->freq, 0, addr,
74 wpabuf_head(buf), wpabuf_len(buf));
75
76 wpabuf_free(buf);
77
78 return ret;
79 }
80
81
hs20_send_wnm_notification_t_c(struct hostapd_data * hapd,const u8 * addr,const char * url)82 int hs20_send_wnm_notification_t_c(struct hostapd_data *hapd,
83 const u8 *addr, const char *url)
84 {
85 struct wpabuf *buf;
86 int ret;
87 size_t url_len;
88
89 if (!url) {
90 wpa_printf(MSG_INFO, "HS 2.0: No T&C Server URL available");
91 return -1;
92 }
93
94 url_len = os_strlen(url);
95 if (5 + url_len > 255) {
96 wpa_printf(MSG_INFO,
97 "HS 2.0: Too long T&C Server URL for WNM-Notification: '%s'",
98 url);
99 return -1;
100 }
101
102 buf = wpabuf_alloc(4 + 7 + url_len);
103 if (!buf)
104 return -1;
105
106 wpabuf_put_u8(buf, WLAN_ACTION_WNM);
107 wpabuf_put_u8(buf, WNM_NOTIFICATION_REQ);
108 wpabuf_put_u8(buf, 1); /* Dialog token */
109 wpabuf_put_u8(buf, 1); /* Type - 1 reserved for WFA */
110
111 /* Terms and Conditions Acceptance subelement */
112 wpabuf_put_u8(buf, WLAN_EID_VENDOR_SPECIFIC);
113 wpabuf_put_u8(buf, 4 + 1 + url_len);
114 wpabuf_put_be24(buf, OUI_WFA);
115 wpabuf_put_u8(buf, HS20_WNM_T_C_ACCEPTANCE);
116 wpabuf_put_u8(buf, url_len);
117 wpabuf_put_str(buf, url);
118
119 ret = hostapd_drv_send_action(hapd, hapd->iface->freq, 0, addr,
120 wpabuf_head(buf), wpabuf_len(buf));
121
122 wpabuf_free(buf);
123
124 return ret;
125 }
126
127
hs20_t_c_filtering(struct hostapd_data * hapd,struct sta_info * sta,int enabled)128 void hs20_t_c_filtering(struct hostapd_data *hapd, struct sta_info *sta,
129 int enabled)
130 {
131 if (enabled) {
132 wpa_printf(MSG_DEBUG,
133 "HS 2.0: Terms and Conditions filtering required for "
134 MACSTR, MAC2STR(sta->addr));
135 sta->hs20_t_c_filtering = 1;
136 /* TODO: Enable firewall filtering for the STA */
137 wpa_msg(hapd->msg_ctx, MSG_INFO, HS20_T_C_FILTERING_ADD MACSTR,
138 MAC2STR(sta->addr));
139 } else {
140 wpa_printf(MSG_DEBUG,
141 "HS 2.0: Terms and Conditions filtering not required for "
142 MACSTR, MAC2STR(sta->addr));
143 sta->hs20_t_c_filtering = 0;
144 /* TODO: Disable firewall filtering for the STA */
145 wpa_msg(hapd->msg_ctx, MSG_INFO,
146 HS20_T_C_FILTERING_REMOVE MACSTR, MAC2STR(sta->addr));
147 }
148 }
149