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1 /*
2  * hostapd / Initialization and configuration
3  * Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi>
4  *
5  * This software may be distributed under the terms of the BSD license.
6  * See README for more details.
7  */
8 
9 #ifndef HOSTAPD_H
10 #define HOSTAPD_H
11 
12 #include "common/defs.h"
13 #include "ap_config.h"
14 
15 struct wpa_driver_ops;
16 struct wpa_ctrl_dst;
17 struct radius_server_data;
18 struct upnp_wps_device_sm;
19 struct hostapd_data;
20 struct sta_info;
21 struct hostap_sta_driver_data;
22 struct ieee80211_ht_capabilities;
23 struct full_dynamic_vlan;
24 enum wps_event;
25 union wps_event_data;
26 
27 struct hostapd_iface;
28 
29 struct hapd_interfaces {
30 	int (*reload_config)(struct hostapd_iface *iface);
31 	struct hostapd_config * (*config_read_cb)(const char *config_fname);
32 	int (*ctrl_iface_init)(struct hostapd_data *hapd);
33 	void (*ctrl_iface_deinit)(struct hostapd_data *hapd);
34 	int (*for_each_interface)(struct hapd_interfaces *interfaces,
35 				  int (*cb)(struct hostapd_iface *iface,
36 					    void *ctx), void *ctx);
37 	int (*driver_init)(struct hostapd_iface *iface);
38 
39 	size_t count;
40 	int global_ctrl_sock;
41 	char *global_iface_path;
42 	char *global_iface_name;
43 	gid_t ctrl_iface_group;
44 	struct hostapd_iface **iface;
45 };
46 
47 
48 struct hostapd_probereq_cb {
49 	int (*cb)(void *ctx, const u8 *sa, const u8 *da, const u8 *bssid,
50 		  const u8 *ie, size_t ie_len, int ssi_signal);
51 	void *ctx;
52 };
53 
54 #define HOSTAPD_RATE_BASIC 0x00000001
55 
56 struct hostapd_rate_data {
57 	int rate; /* rate in 100 kbps */
58 	int flags; /* HOSTAPD_RATE_ flags */
59 };
60 
61 struct hostapd_frame_info {
62 	u32 channel;
63 	u32 datarate;
64 	int ssi_signal; /* dBm */
65 };
66 
67 
68 /**
69  * struct hostapd_data - hostapd per-BSS data structure
70  */
71 struct hostapd_data {
72 	struct hostapd_iface *iface;
73 	struct hostapd_config *iconf;
74 	struct hostapd_bss_config *conf;
75 	int interface_added; /* virtual interface added for this BSS */
76 
77 	u8 own_addr[ETH_ALEN];
78 
79 	int num_sta; /* number of entries in sta_list */
80 	struct sta_info *sta_list; /* STA info list head */
81 #define STA_HASH_SIZE 256
82 #define STA_HASH(sta) (sta[5])
83 	struct sta_info *sta_hash[STA_HASH_SIZE];
84 
85 	/*
86 	 * Bitfield for indicating which AIDs are allocated. Only AID values
87 	 * 1-2007 are used and as such, the bit at index 0 corresponds to AID
88 	 * 1.
89 	 */
90 #define AID_WORDS ((2008 + 31) / 32)
91 	u32 sta_aid[AID_WORDS];
92 
93 	const struct wpa_driver_ops *driver;
94 	void *drv_priv;
95 
96 	void (*new_assoc_sta_cb)(struct hostapd_data *hapd,
97 				 struct sta_info *sta, int reassoc);
98 
99 	void *msg_ctx; /* ctx for wpa_msg() calls */
100 	void *msg_ctx_parent; /* parent interface ctx for wpa_msg() calls */
101 
102 	struct radius_client_data *radius;
103 	u32 acct_session_id_hi, acct_session_id_lo;
104 	struct radius_das_data *radius_das;
105 
106 	struct iapp_data *iapp;
107 
108 	struct hostapd_cached_radius_acl *acl_cache;
109 	struct hostapd_acl_query_data *acl_queries;
110 
111 	struct wpa_authenticator *wpa_auth;
112 	struct eapol_authenticator *eapol_auth;
113 
114 	struct rsn_preauth_interface *preauth_iface;
115 	time_t michael_mic_failure;
116 	int michael_mic_failures;
117 	int tkip_countermeasures;
118 
119 	int ctrl_sock;
120 	struct wpa_ctrl_dst *ctrl_dst;
121 
122 	void *ssl_ctx;
123 	void *eap_sim_db_priv;
124 	struct radius_server_data *radius_srv;
125 
126 	int parameter_set_count;
127 
128 	/* Time Advertisement */
129 	u8 time_update_counter;
130 	struct wpabuf *time_adv;
131 
132 #ifdef CONFIG_FULL_DYNAMIC_VLAN
133 	struct full_dynamic_vlan *full_dynamic_vlan;
134 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
135 
136 	struct l2_packet_data *l2;
137 	struct wps_context *wps;
138 
139 	int beacon_set_done;
140 	struct wpabuf *wps_beacon_ie;
141 	struct wpabuf *wps_probe_resp_ie;
142 #ifdef CONFIG_WPS
143 	unsigned int ap_pin_failures;
144 	unsigned int ap_pin_failures_consecutive;
145 	struct upnp_wps_device_sm *wps_upnp;
146 	unsigned int ap_pin_lockout_time;
147 #endif /* CONFIG_WPS */
148 
149 	struct hostapd_probereq_cb *probereq_cb;
150 	size_t num_probereq_cb;
151 
152 	void (*public_action_cb)(void *ctx, const u8 *buf, size_t len,
153 				 int freq);
154 	void *public_action_cb_ctx;
155 	void (*public_action_cb2)(void *ctx, const u8 *buf, size_t len,
156 				  int freq);
157 	void *public_action_cb2_ctx;
158 
159 	int (*vendor_action_cb)(void *ctx, const u8 *buf, size_t len,
160 				int freq);
161 	void *vendor_action_cb_ctx;
162 
163 	void (*wps_reg_success_cb)(void *ctx, const u8 *mac_addr,
164 				   const u8 *uuid_e);
165 	void *wps_reg_success_cb_ctx;
166 
167 	void (*wps_event_cb)(void *ctx, enum wps_event event,
168 			     union wps_event_data *data);
169 	void *wps_event_cb_ctx;
170 
171 	void (*sta_authorized_cb)(void *ctx, const u8 *mac_addr,
172 				  int authorized, const u8 *p2p_dev_addr);
173 	void *sta_authorized_cb_ctx;
174 
175 	void (*setup_complete_cb)(void *ctx);
176 	void *setup_complete_cb_ctx;
177 
178 #ifdef CONFIG_P2P
179 	struct p2p_data *p2p;
180 	struct p2p_group *p2p_group;
181 	struct wpabuf *p2p_beacon_ie;
182 	struct wpabuf *p2p_probe_resp_ie;
183 
184 	/* Number of non-P2P association stations */
185 	int num_sta_no_p2p;
186 
187 	/* Periodic NoA (used only when no non-P2P clients in the group) */
188 	int noa_enabled;
189 	int noa_start;
190 	int noa_duration;
191 #endif /* CONFIG_P2P */
192 #ifdef CONFIG_INTERWORKING
193 	size_t gas_frag_limit;
194 #endif /* CONFIG_INTERWORKING */
195 
196 #ifdef CONFIG_SQLITE
197 	struct hostapd_eap_user tmp_eap_user;
198 #endif /* CONFIG_SQLITE */
199 
200 #ifdef CONFIG_SAE
201 	/** Key used for generating SAE anti-clogging tokens */
202 	u8 sae_token_key[8];
203 	os_time_t last_sae_token_key_update;
204 #endif /* CONFIG_SAE */
205 };
206 
207 
208 /**
209  * struct hostapd_iface - hostapd per-interface data structure
210  */
211 struct hostapd_iface {
212 	struct hapd_interfaces *interfaces;
213 	void *owner;
214 	char *config_fname;
215 	struct hostapd_config *conf;
216 
217 	size_t num_bss;
218 	struct hostapd_data **bss;
219 
220 	int num_ap; /* number of entries in ap_list */
221 	struct ap_info *ap_list; /* AP info list head */
222 	struct ap_info *ap_hash[STA_HASH_SIZE];
223 
224 	unsigned int drv_flags;
225 
226 	/*
227 	 * A bitmap of supported protocols for probe response offload. See
228 	 * struct wpa_driver_capa in driver.h
229 	 */
230 	unsigned int probe_resp_offloads;
231 
232 	/* extended capabilities supported by the driver */
233 	const u8 *extended_capa, *extended_capa_mask;
234 	unsigned int extended_capa_len;
235 
236 	struct hostapd_hw_modes *hw_features;
237 	int num_hw_features;
238 	struct hostapd_hw_modes *current_mode;
239 	/* Rates that are currently used (i.e., filtered copy of
240 	 * current_mode->channels */
241 	int num_rates;
242 	struct hostapd_rate_data *current_rates;
243 	int *basic_rates;
244 	int freq;
245 
246 	u16 hw_flags;
247 
248 	/* Number of associated Non-ERP stations (i.e., stations using 802.11b
249 	 * in 802.11g BSS) */
250 	int num_sta_non_erp;
251 
252 	/* Number of associated stations that do not support Short Slot Time */
253 	int num_sta_no_short_slot_time;
254 
255 	/* Number of associated stations that do not support Short Preamble */
256 	int num_sta_no_short_preamble;
257 
258 	int olbc; /* Overlapping Legacy BSS Condition */
259 
260 	/* Number of HT associated stations that do not support greenfield */
261 	int num_sta_ht_no_gf;
262 
263 	/* Number of associated non-HT stations */
264 	int num_sta_no_ht;
265 
266 	/* Number of HT associated stations 20 MHz */
267 	int num_sta_ht_20mhz;
268 
269 	/* Overlapping BSS information */
270 	int olbc_ht;
271 
272 	u16 ht_op_mode;
273 	void (*scan_cb)(struct hostapd_iface *iface);
274 };
275 
276 /* hostapd.c */
277 int hostapd_for_each_interface(struct hapd_interfaces *interfaces,
278 			       int (*cb)(struct hostapd_iface *iface,
279 					 void *ctx), void *ctx);
280 int hostapd_reload_config(struct hostapd_iface *iface);
281 struct hostapd_data *
282 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
283 		       struct hostapd_config *conf,
284 		       struct hostapd_bss_config *bss);
285 int hostapd_setup_interface(struct hostapd_iface *iface);
286 int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err);
287 void hostapd_interface_deinit(struct hostapd_iface *iface);
288 void hostapd_interface_free(struct hostapd_iface *iface);
289 void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
290 			   int reassoc);
291 void hostapd_interface_deinit_free(struct hostapd_iface *iface);
292 int hostapd_enable_iface(struct hostapd_iface *hapd_iface);
293 int hostapd_reload_iface(struct hostapd_iface *hapd_iface);
294 int hostapd_disable_iface(struct hostapd_iface *hapd_iface);
295 int hostapd_add_iface(struct hapd_interfaces *ifaces, char *buf);
296 int hostapd_remove_iface(struct hapd_interfaces *ifaces, char *buf);
297 
298 /* utils.c */
299 int hostapd_register_probereq_cb(struct hostapd_data *hapd,
300 				 int (*cb)(void *ctx, const u8 *sa,
301 					   const u8 *da, const u8 *bssid,
302 					   const u8 *ie, size_t ie_len,
303 					   int ssi_signal),
304 				 void *ctx);
305 void hostapd_prune_associations(struct hostapd_data *hapd, const u8 *addr);
306 
307 /* drv_callbacks.c (TODO: move to somewhere else?) */
308 int hostapd_notif_assoc(struct hostapd_data *hapd, const u8 *addr,
309 			const u8 *ie, size_t ielen, int reassoc);
310 void hostapd_notif_disassoc(struct hostapd_data *hapd, const u8 *addr);
311 void hostapd_event_sta_low_ack(struct hostapd_data *hapd, const u8 *addr);
312 void hostapd_event_connect_failed_reason(struct hostapd_data *hapd,
313 					 const u8 *addr, int reason_code);
314 int hostapd_probe_req_rx(struct hostapd_data *hapd, const u8 *sa, const u8 *da,
315 			 const u8 *bssid, const u8 *ie, size_t ie_len,
316 			 int ssi_signal);
317 void hostapd_event_ch_switch(struct hostapd_data *hapd, int freq, int ht,
318 			     int offset);
319 
320 const struct hostapd_eap_user *
321 hostapd_get_eap_user(struct hostapd_data *hapd, const u8 *identity,
322 		     size_t identity_len, int phase2);
323 
324 #endif /* HOSTAPD_H */
325