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1 /*
2  * hostapd / Configuration definitions and helpers functions
3  * Copyright (c) 2003-2009, Jouni Malinen <j@w1.fi>
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2 as
7  * published by the Free Software Foundation.
8  *
9  * Alternatively, this software may be distributed under the terms of BSD
10  * license.
11  *
12  * See README and COPYING for more details.
13  */
14 
15 #ifndef HOSTAPD_CONFIG_H
16 #define HOSTAPD_CONFIG_H
17 
18 #include "common/defs.h"
19 #include "ip_addr.h"
20 #include "common/wpa_common.h"
21 #include "wps/wps.h"
22 
23 #define MAX_STA_COUNT 2007
24 #define MAX_VLAN_ID 4094
25 
26 typedef u8 macaddr[ETH_ALEN];
27 
28 struct mac_acl_entry {
29 	macaddr addr;
30 	int vlan_id;
31 };
32 
33 struct hostapd_radius_servers;
34 struct ft_remote_r0kh;
35 struct ft_remote_r1kh;
36 
37 #define HOSTAPD_MAX_SSID_LEN 32
38 
39 #define NUM_WEP_KEYS 4
40 struct hostapd_wep_keys {
41 	u8 idx;
42 	u8 *key[NUM_WEP_KEYS];
43 	size_t len[NUM_WEP_KEYS];
44 	int keys_set;
45 	size_t default_len; /* key length used for dynamic key generation */
46 };
47 
48 typedef enum hostap_security_policy {
49 	SECURITY_PLAINTEXT = 0,
50 	SECURITY_STATIC_WEP = 1,
51 	SECURITY_IEEE_802_1X = 2,
52 	SECURITY_WPA_PSK = 3,
53 	SECURITY_WPA = 4
54 } secpolicy;
55 
56 struct hostapd_ssid {
57 	char ssid[HOSTAPD_MAX_SSID_LEN + 1];
58 	size_t ssid_len;
59 	int ssid_set;
60 
61 	char vlan[IFNAMSIZ + 1];
62 	secpolicy security_policy;
63 
64 	struct hostapd_wpa_psk *wpa_psk;
65 	char *wpa_passphrase;
66 	char *wpa_psk_file;
67 
68 	struct hostapd_wep_keys wep;
69 
70 #define DYNAMIC_VLAN_DISABLED 0
71 #define DYNAMIC_VLAN_OPTIONAL 1
72 #define DYNAMIC_VLAN_REQUIRED 2
73 	int dynamic_vlan;
74 #ifdef CONFIG_FULL_DYNAMIC_VLAN
75 	char *vlan_tagged_interface;
76 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
77 	struct hostapd_wep_keys **dyn_vlan_keys;
78 	size_t max_dyn_vlan_keys;
79 };
80 
81 
82 #define VLAN_ID_WILDCARD -1
83 
84 struct hostapd_vlan {
85 	struct hostapd_vlan *next;
86 	int vlan_id; /* VLAN ID or -1 (VLAN_ID_WILDCARD) for wildcard entry */
87 	char ifname[IFNAMSIZ + 1];
88 	int dynamic_vlan;
89 #ifdef CONFIG_FULL_DYNAMIC_VLAN
90 
91 #define DVLAN_CLEAN_BR 	0x1
92 #define DVLAN_CLEAN_VLAN	0x2
93 #define DVLAN_CLEAN_VLAN_PORT	0x4
94 #define DVLAN_CLEAN_WLAN_PORT	0x8
95 	int clean;
96 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
97 };
98 
99 #define PMK_LEN 32
100 struct hostapd_wpa_psk {
101 	struct hostapd_wpa_psk *next;
102 	int group;
103 	u8 psk[PMK_LEN];
104 	u8 addr[ETH_ALEN];
105 };
106 
107 #define EAP_USER_MAX_METHODS 8
108 struct hostapd_eap_user {
109 	struct hostapd_eap_user *next;
110 	u8 *identity;
111 	size_t identity_len;
112 	struct {
113 		int vendor;
114 		u32 method;
115 	} methods[EAP_USER_MAX_METHODS];
116 	u8 *password;
117 	size_t password_len;
118 	int phase2;
119 	int force_version;
120 	unsigned int wildcard_prefix:1;
121 	unsigned int password_hash:1; /* whether password is hashed with
122 				       * nt_password_hash() */
123 	int ttls_auth; /* EAP_TTLS_AUTH_* bitfield */
124 };
125 
126 
127 #define NUM_TX_QUEUES 4
128 
129 struct hostapd_tx_queue_params {
130 	int aifs;
131 	int cwmin;
132 	int cwmax;
133 	int burst; /* maximum burst time in 0.1 ms, i.e., 10 = 1 ms */
134 };
135 
136 struct hostapd_wmm_ac_params {
137 	int cwmin;
138 	int cwmax;
139 	int aifs;
140 	int txop_limit; /* in units of 32us */
141 	int admission_control_mandatory;
142 };
143 
144 
145 /**
146  * struct hostapd_bss_config - Per-BSS configuration
147  */
148 struct hostapd_bss_config {
149 	char iface[IFNAMSIZ + 1];
150 	char bridge[IFNAMSIZ + 1];
151 	char wds_bridge[IFNAMSIZ + 1];
152 
153 	enum hostapd_logger_level logger_syslog_level, logger_stdout_level;
154 
155 	unsigned int logger_syslog; /* module bitfield */
156 	unsigned int logger_stdout; /* module bitfield */
157 
158 	char *dump_log_name; /* file name for state dump (SIGUSR1) */
159 
160 	int max_num_sta; /* maximum number of STAs in station table */
161 
162 	int dtim_period;
163 
164 	int ieee802_1x; /* use IEEE 802.1X */
165 	int eapol_version;
166 	int eap_server; /* Use internal EAP server instead of external
167 			 * RADIUS server */
168 	struct hostapd_eap_user *eap_user;
169 	char *eap_sim_db;
170 	struct hostapd_ip_addr own_ip_addr;
171 	char *nas_identifier;
172 	struct hostapd_radius_servers *radius;
173 	int acct_interim_interval;
174 
175 	struct hostapd_ssid ssid;
176 
177 	char *eap_req_id_text; /* optional displayable message sent with
178 				* EAP Request-Identity */
179 	size_t eap_req_id_text_len;
180 	int eapol_key_index_workaround;
181 
182 	size_t default_wep_key_len;
183 	int individual_wep_key_len;
184 	int wep_rekeying_period;
185 	int broadcast_key_idx_min, broadcast_key_idx_max;
186 	int eap_reauth_period;
187 
188 	int ieee802_11f; /* use IEEE 802.11f (IAPP) */
189 	char iapp_iface[IFNAMSIZ + 1]; /* interface used with IAPP broadcast
190 					* frames */
191 
192 	enum {
193 		ACCEPT_UNLESS_DENIED = 0,
194 		DENY_UNLESS_ACCEPTED = 1,
195 		USE_EXTERNAL_RADIUS_AUTH = 2
196 	} macaddr_acl;
197 	struct mac_acl_entry *accept_mac;
198 	int num_accept_mac;
199 	struct mac_acl_entry *deny_mac;
200 	int num_deny_mac;
201 	int wds_sta;
202 	int isolate;
203 
204 	int auth_algs; /* bitfield of allowed IEEE 802.11 authentication
205 			* algorithms, WPA_AUTH_ALG_{OPEN,SHARED,LEAP} */
206 
207 	int wpa; /* bitfield of WPA_PROTO_WPA, WPA_PROTO_RSN */
208 	int wpa_key_mgmt;
209 #ifdef CONFIG_IEEE80211W
210 	enum mfp_options ieee80211w;
211 	/* dot11AssociationSAQueryMaximumTimeout (in TUs) */
212 	unsigned int assoc_sa_query_max_timeout;
213 	/* dot11AssociationSAQueryRetryTimeout (in TUs) */
214 	int assoc_sa_query_retry_timeout;
215 #endif /* CONFIG_IEEE80211W */
216 	int wpa_pairwise;
217 	int wpa_group;
218 	int wpa_group_rekey;
219 	int wpa_strict_rekey;
220 	int wpa_gmk_rekey;
221 	int wpa_ptk_rekey;
222 	int rsn_pairwise;
223 	int rsn_preauth;
224 	char *rsn_preauth_interfaces;
225 	int peerkey;
226 
227 #ifdef CONFIG_IEEE80211R
228 	/* IEEE 802.11r - Fast BSS Transition */
229 	u8 mobility_domain[MOBILITY_DOMAIN_ID_LEN];
230 	u8 r1_key_holder[FT_R1KH_ID_LEN];
231 	u32 r0_key_lifetime;
232 	u32 reassociation_deadline;
233 	struct ft_remote_r0kh *r0kh_list;
234 	struct ft_remote_r1kh *r1kh_list;
235 	int pmk_r1_push;
236 	int ft_over_ds;
237 #endif /* CONFIG_IEEE80211R */
238 
239 	char *ctrl_interface; /* directory for UNIX domain sockets */
240 #ifndef CONFIG_NATIVE_WINDOWS
241 	gid_t ctrl_interface_gid;
242 #endif /* CONFIG_NATIVE_WINDOWS */
243 	int ctrl_interface_gid_set;
244 
245 	char *ca_cert;
246 	char *server_cert;
247 	char *private_key;
248 	char *private_key_passwd;
249 	int check_crl;
250 	char *dh_file;
251 	u8 *pac_opaque_encr_key;
252 	u8 *eap_fast_a_id;
253 	size_t eap_fast_a_id_len;
254 	char *eap_fast_a_id_info;
255 	int eap_fast_prov;
256 	int pac_key_lifetime;
257 	int pac_key_refresh_time;
258 	int eap_sim_aka_result_ind;
259 	int tnc;
260 	int fragment_size;
261 	u16 pwd_group;
262 
263 	char *radius_server_clients;
264 	int radius_server_auth_port;
265 	int radius_server_ipv6;
266 
267 	char *test_socket; /* UNIX domain socket path for driver_test */
268 
269 	int use_pae_group_addr; /* Whether to send EAPOL frames to PAE group
270 				 * address instead of individual address
271 				 * (for driver_wired.c).
272 				 */
273 
274 	int ap_max_inactivity;
275 	int ignore_broadcast_ssid;
276 
277 	int wmm_enabled;
278 	int wmm_uapsd;
279 
280 	struct hostapd_vlan *vlan, *vlan_tail;
281 
282 	macaddr bssid;
283 
284 	/*
285 	 * Maximum listen interval that STAs can use when associating with this
286 	 * BSS. If a STA tries to use larger value, the association will be
287 	 * denied with status code 51.
288 	 */
289 	u16 max_listen_interval;
290 
291 	int disable_pmksa_caching;
292 	int okc; /* Opportunistic Key Caching */
293 
294 	int wps_state;
295 #ifdef CONFIG_WPS
296 	int ap_setup_locked;
297 	u8 uuid[16];
298 	char *wps_pin_requests;
299 	char *device_name;
300 	char *manufacturer;
301 	char *model_name;
302 	char *model_number;
303 	char *serial_number;
304 	u8 device_type[WPS_DEV_TYPE_LEN];
305 	char *config_methods;
306 	u8 os_version[4];
307 	char *ap_pin;
308 	int skip_cred_build;
309 	u8 *extra_cred;
310 	size_t extra_cred_len;
311 	int wps_cred_processing;
312 	u8 *ap_settings;
313 	size_t ap_settings_len;
314 	char *upnp_iface;
315 	char *friendly_name;
316 	char *manufacturer_url;
317 	char *model_description;
318 	char *model_url;
319 	char *upc;
320 	struct wpabuf *wps_vendor_ext[MAX_WPS_VENDOR_EXTENSIONS];
321 #endif /* CONFIG_WPS */
322 	int pbc_in_m1;
323 
324 #define P2P_ENABLED BIT(0)
325 #define P2P_GROUP_OWNER BIT(1)
326 #define P2P_GROUP_FORMATION BIT(2)
327 #define P2P_MANAGE BIT(3)
328 #define P2P_ALLOW_CROSS_CONNECTION BIT(4)
329 	int p2p;
330 
331 	int disassoc_low_ack;
332 
333 #define TDLS_PROHIBIT BIT(0)
334 #define TDLS_PROHIBIT_CHAN_SWITCH BIT(1)
335 	int tdls;
336 	int disable_11n;
337 };
338 
339 
340 /**
341  * struct hostapd_config - Per-radio interface configuration
342  */
343 struct hostapd_config {
344 	struct hostapd_bss_config *bss, *last_bss;
345 	size_t num_bss;
346 
347 	u16 beacon_int;
348 	int rts_threshold;
349 	int fragm_threshold;
350 	u8 send_probe_response;
351 	u8 channel;
352 	enum hostapd_hw_mode hw_mode; /* HOSTAPD_MODE_IEEE80211A, .. */
353 	enum {
354 		LONG_PREAMBLE = 0,
355 		SHORT_PREAMBLE = 1
356 	} preamble;
357 	enum {
358 		CTS_PROTECTION_AUTOMATIC = 0,
359 		CTS_PROTECTION_FORCE_ENABLED = 1,
360 		CTS_PROTECTION_FORCE_DISABLED = 2,
361 		CTS_PROTECTION_AUTOMATIC_NO_OLBC = 3,
362 	} cts_protection_type;
363 
364 	int *supported_rates;
365 	int *basic_rates;
366 
367 	const struct wpa_driver_ops *driver;
368 
369 	int ap_table_max_size;
370 	int ap_table_expiration_time;
371 
372 	char country[3]; /* first two octets: country code as described in
373 			  * ISO/IEC 3166-1. Third octet:
374 			  * ' ' (ascii 32): all environments
375 			  * 'O': Outdoor environemnt only
376 			  * 'I': Indoor environment only
377 			  */
378 
379 	int ieee80211d;
380 
381 	struct hostapd_tx_queue_params tx_queue[NUM_TX_QUEUES];
382 
383 	/*
384 	 * WMM AC parameters, in same order as 802.1D, i.e.
385 	 * 0 = BE (best effort)
386 	 * 1 = BK (background)
387 	 * 2 = VI (video)
388 	 * 3 = VO (voice)
389 	 */
390 	struct hostapd_wmm_ac_params wmm_ac_params[4];
391 
392 	int ht_op_mode_fixed;
393 	u16 ht_capab;
394 	int ieee80211n;
395 	int secondary_channel;
396 	int require_ht;
397 };
398 
399 
400 int hostapd_mac_comp(const void *a, const void *b);
401 int hostapd_mac_comp_empty(const void *a);
402 struct hostapd_config * hostapd_config_defaults(void);
403 void hostapd_config_defaults_bss(struct hostapd_bss_config *bss);
404 void hostapd_config_free(struct hostapd_config *conf);
405 int hostapd_maclist_found(struct mac_acl_entry *list, int num_entries,
406 			  const u8 *addr, int *vlan_id);
407 int hostapd_rate_found(int *list, int rate);
408 int hostapd_wep_key_cmp(struct hostapd_wep_keys *a,
409 			struct hostapd_wep_keys *b);
410 const u8 * hostapd_get_psk(const struct hostapd_bss_config *conf,
411 			   const u8 *addr, const u8 *prev_psk);
412 int hostapd_setup_wpa_psk(struct hostapd_bss_config *conf);
413 const char * hostapd_get_vlan_id_ifname(struct hostapd_vlan *vlan,
414 					int vlan_id);
415 const struct hostapd_eap_user *
416 hostapd_get_eap_user(const struct hostapd_bss_config *conf, const u8 *identity,
417 		     size_t identity_len, int phase2);
418 
419 #endif /* HOSTAPD_CONFIG_H */
420