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1 | /* |
2 | * WPA Supplicant / Network configuration structures | |
3 | * Copyright (c) 2003-2008, 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 CONFIG_SSID_H | |
16 | #define CONFIG_SSID_H | |
17 | ||
90973fb2 | 18 | #include "common/defs.h" |
6fc6879b JM |
19 | #include "eap_peer/eap_config.h" |
20 | ||
21 | #define MAX_SSID_LEN 32 | |
22 | ||
23 | ||
24 | #define DEFAULT_EAP_WORKAROUND ((unsigned int) -1) | |
25 | #define DEFAULT_EAPOL_FLAGS (EAPOL_FLAG_REQUIRE_KEY_UNICAST | \ | |
26 | EAPOL_FLAG_REQUIRE_KEY_BROADCAST) | |
27 | #define DEFAULT_PROTO (WPA_PROTO_WPA | WPA_PROTO_RSN) | |
28 | #define DEFAULT_KEY_MGMT (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X) | |
29 | #define DEFAULT_PAIRWISE (WPA_CIPHER_CCMP | WPA_CIPHER_TKIP) | |
30 | #define DEFAULT_GROUP (WPA_CIPHER_CCMP | WPA_CIPHER_TKIP | \ | |
31 | WPA_CIPHER_WEP104 | WPA_CIPHER_WEP40) | |
32 | #define DEFAULT_FRAGMENT_SIZE 1398 | |
33 | ||
34 | /** | |
35 | * struct wpa_ssid - Network configuration data | |
36 | * | |
37 | * This structure includes all the configuration variables for a network. This | |
38 | * data is included in the per-interface configuration data as an element of | |
39 | * the network list, struct wpa_config::ssid. Each network block in the | |
40 | * configuration is mapped to a struct wpa_ssid instance. | |
41 | */ | |
42 | struct wpa_ssid { | |
43 | /** | |
44 | * next - Next network in global list | |
45 | * | |
46 | * This pointer can be used to iterate over all networks. The head of | |
47 | * this list is stored in the ssid field of struct wpa_config. | |
48 | */ | |
49 | struct wpa_ssid *next; | |
50 | ||
51 | /** | |
52 | * pnext - Next network in per-priority list | |
53 | * | |
54 | * This pointer can be used to iterate over all networks in the same | |
55 | * priority class. The heads of these list are stored in the pssid | |
56 | * fields of struct wpa_config. | |
57 | */ | |
58 | struct wpa_ssid *pnext; | |
59 | ||
60 | /** | |
61 | * id - Unique id for the network | |
62 | * | |
63 | * This identifier is used as a unique identifier for each network | |
64 | * block when using the control interface. Each network is allocated an | |
65 | * id when it is being created, either when reading the configuration | |
66 | * file or when a new network is added through the control interface. | |
67 | */ | |
68 | int id; | |
69 | ||
70 | /** | |
71 | * priority - Priority group | |
72 | * | |
73 | * By default, all networks will get same priority group (0). If some | |
74 | * of the networks are more desirable, this field can be used to change | |
75 | * the order in which wpa_supplicant goes through the networks when | |
76 | * selecting a BSS. The priority groups will be iterated in decreasing | |
77 | * priority (i.e., the larger the priority value, the sooner the | |
78 | * network is matched against the scan results). Within each priority | |
79 | * group, networks will be selected based on security policy, signal | |
80 | * strength, etc. | |
81 | * | |
82 | * Please note that AP scanning with scan_ssid=1 and ap_scan=2 mode are | |
83 | * not using this priority to select the order for scanning. Instead, | |
84 | * they try the networks in the order that used in the configuration | |
85 | * file. | |
86 | */ | |
87 | int priority; | |
88 | ||
89 | /** | |
90 | * ssid - Service set identifier (network name) | |
91 | * | |
92 | * This is the SSID for the network. For wireless interfaces, this is | |
93 | * used to select which network will be used. If set to %NULL (or | |
94 | * ssid_len=0), any SSID can be used. For wired interfaces, this must | |
95 | * be set to %NULL. Note: SSID may contain any characters, even nul | |
96 | * (ASCII 0) and as such, this should not be assumed to be a nul | |
97 | * terminated string. ssid_len defines how many characters are valid | |
98 | * and the ssid field is not guaranteed to be nul terminated. | |
99 | */ | |
100 | u8 *ssid; | |
101 | ||
102 | /** | |
103 | * ssid_len - Length of the SSID | |
104 | */ | |
105 | size_t ssid_len; | |
106 | ||
107 | /** | |
108 | * bssid - BSSID | |
109 | * | |
110 | * If set, this network block is used only when associating with the AP | |
111 | * using the configured BSSID | |
2c5d725c JM |
112 | * |
113 | * If this is a persistent P2P group (disabled == 2), this is the GO | |
114 | * Device Address. | |
6fc6879b JM |
115 | */ |
116 | u8 bssid[ETH_ALEN]; | |
117 | ||
118 | /** | |
119 | * bssid_set - Whether BSSID is configured for this network | |
120 | */ | |
121 | int bssid_set; | |
122 | ||
123 | /** | |
124 | * psk - WPA pre-shared key (256 bits) | |
125 | */ | |
126 | u8 psk[32]; | |
127 | ||
128 | /** | |
129 | * psk_set - Whether PSK field is configured | |
130 | */ | |
131 | int psk_set; | |
132 | ||
133 | /** | |
134 | * passphrase - WPA ASCII passphrase | |
135 | * | |
136 | * If this is set, psk will be generated using the SSID and passphrase | |
137 | * configured for the network. ASCII passphrase must be between 8 and | |
138 | * 63 characters (inclusive). | |
139 | */ | |
140 | char *passphrase; | |
141 | ||
142 | /** | |
143 | * pairwise_cipher - Bitfield of allowed pairwise ciphers, WPA_CIPHER_* | |
144 | */ | |
145 | int pairwise_cipher; | |
146 | ||
147 | /** | |
148 | * group_cipher - Bitfield of allowed group ciphers, WPA_CIPHER_* | |
149 | */ | |
150 | int group_cipher; | |
151 | ||
152 | /** | |
153 | * key_mgmt - Bitfield of allowed key management protocols | |
154 | * | |
155 | * WPA_KEY_MGMT_* | |
156 | */ | |
157 | int key_mgmt; | |
158 | ||
159 | /** | |
160 | * proto - Bitfield of allowed protocols, WPA_PROTO_* | |
161 | */ | |
162 | int proto; | |
163 | ||
164 | /** | |
165 | * auth_alg - Bitfield of allowed authentication algorithms | |
166 | * | |
167 | * WPA_AUTH_ALG_* | |
168 | */ | |
169 | int auth_alg; | |
170 | ||
171 | /** | |
172 | * scan_ssid - Scan this SSID with Probe Requests | |
173 | * | |
174 | * scan_ssid can be used to scan for APs using hidden SSIDs. | |
175 | * Note: Many drivers do not support this. ap_mode=2 can be used with | |
176 | * such drivers to use hidden SSIDs. | |
177 | */ | |
178 | int scan_ssid; | |
179 | ||
180 | #ifdef IEEE8021X_EAPOL | |
181 | #define EAPOL_FLAG_REQUIRE_KEY_UNICAST BIT(0) | |
182 | #define EAPOL_FLAG_REQUIRE_KEY_BROADCAST BIT(1) | |
183 | /** | |
184 | * eapol_flags - Bit field of IEEE 802.1X/EAPOL options (EAPOL_FLAG_*) | |
185 | */ | |
186 | int eapol_flags; | |
187 | ||
188 | /** | |
189 | * eap - EAP peer configuration for this network | |
190 | */ | |
191 | struct eap_peer_config eap; | |
192 | #endif /* IEEE8021X_EAPOL */ | |
193 | ||
194 | #define NUM_WEP_KEYS 4 | |
195 | #define MAX_WEP_KEY_LEN 16 | |
196 | /** | |
197 | * wep_key - WEP keys | |
198 | */ | |
199 | u8 wep_key[NUM_WEP_KEYS][MAX_WEP_KEY_LEN]; | |
200 | ||
201 | /** | |
202 | * wep_key_len - WEP key lengths | |
203 | */ | |
204 | size_t wep_key_len[NUM_WEP_KEYS]; | |
205 | ||
206 | /** | |
207 | * wep_tx_keyidx - Default key index for TX frames using WEP | |
208 | */ | |
209 | int wep_tx_keyidx; | |
210 | ||
211 | /** | |
212 | * proactive_key_caching - Enable proactive key caching | |
213 | * | |
214 | * This field can be used to enable proactive key caching which is also | |
215 | * known as opportunistic PMKSA caching for WPA2. This is disabled (0) | |
216 | * by default. Enable by setting this to 1. | |
217 | * | |
218 | * Proactive key caching is used to make supplicant assume that the APs | |
219 | * are using the same PMK and generate PMKSA cache entries without | |
220 | * doing RSN pre-authentication. This requires support from the AP side | |
221 | * and is normally used with wireless switches that co-locate the | |
222 | * authenticator. | |
223 | */ | |
224 | int proactive_key_caching; | |
225 | ||
226 | /** | |
227 | * mixed_cell - Whether mixed cells are allowed | |
228 | * | |
229 | * This option can be used to configure whether so called mixed cells, | |
230 | * i.e., networks that use both plaintext and encryption in the same | |
231 | * SSID, are allowed. This is disabled (0) by default. Enable by | |
232 | * setting this to 1. | |
233 | */ | |
234 | int mixed_cell; | |
235 | ||
236 | #ifdef IEEE8021X_EAPOL | |
237 | ||
238 | /** | |
239 | * leap - Number of EAP methods using LEAP | |
240 | * | |
241 | * This field should be set to 1 if LEAP is enabled. This is used to | |
242 | * select IEEE 802.11 authentication algorithm. | |
243 | */ | |
244 | int leap; | |
245 | ||
246 | /** | |
247 | * non_leap - Number of EAP methods not using LEAP | |
248 | * | |
249 | * This field should be set to >0 if any EAP method other than LEAP is | |
250 | * enabled. This is used to select IEEE 802.11 authentication | |
251 | * algorithm. | |
252 | */ | |
253 | int non_leap; | |
254 | ||
255 | /** | |
256 | * eap_workaround - EAP workarounds enabled | |
257 | * | |
258 | * wpa_supplicant supports number of "EAP workarounds" to work around | |
259 | * interoperability issues with incorrectly behaving authentication | |
260 | * servers. This is recommended to be enabled by default because some | |
261 | * of the issues are present in large number of authentication servers. | |
262 | * | |
263 | * Strict EAP conformance mode can be configured by disabling | |
264 | * workarounds with eap_workaround = 0. | |
265 | */ | |
266 | unsigned int eap_workaround; | |
267 | ||
268 | #endif /* IEEE8021X_EAPOL */ | |
269 | ||
270 | /** | |
271 | * mode - IEEE 802.11 operation mode (Infrastucture/IBSS) | |
272 | * | |
273 | * 0 = infrastructure (Managed) mode, i.e., associate with an AP. | |
274 | * | |
275 | * 1 = IBSS (ad-hoc, peer-to-peer) | |
276 | * | |
1581b38b JM |
277 | * 2 = AP (access point) |
278 | * | |
2c5d725c JM |
279 | * 3 = P2P Group Owner (can be set in the configuration file) |
280 | * | |
281 | * 4 = P2P Group Formation (used internally; not in configuration | |
282 | * files) | |
283 | * | |
6fc6879b JM |
284 | * Note: IBSS can only be used with key_mgmt NONE (plaintext and |
285 | * static WEP) and key_mgmt=WPA-NONE (fixed group key TKIP/CCMP). In | |
286 | * addition, ap_scan has to be set to 2 for IBSS. WPA-None requires | |
287 | * following network block options: proto=WPA, key_mgmt=WPA-NONE, | |
288 | * pairwise=NONE, group=TKIP (or CCMP, but not both), and psk must also | |
289 | * be set (either directly or using ASCII passphrase). | |
290 | */ | |
d7dcba70 JM |
291 | enum wpas_mode { |
292 | WPAS_MODE_INFRA = 0, | |
293 | WPAS_MODE_IBSS = 1, | |
294 | WPAS_MODE_AP = 2, | |
2c5d725c JM |
295 | WPAS_MODE_P2P_GO = 3, |
296 | WPAS_MODE_P2P_GROUP_FORMATION = 4, | |
d7dcba70 | 297 | } mode; |
6fc6879b JM |
298 | |
299 | /** | |
300 | * disabled - Whether this network is currently disabled | |
301 | * | |
302 | * 0 = this network can be used (default). | |
303 | * 1 = this network block is disabled (can be enabled through | |
304 | * ctrl_iface, e.g., with wpa_cli or wpa_gui). | |
2c5d725c JM |
305 | * 2 = this network block includes parameters for a persistent P2P |
306 | * group (can be used with P2P ctrl_iface commands) | |
6fc6879b JM |
307 | */ |
308 | int disabled; | |
309 | ||
310 | /** | |
311 | * peerkey - Whether PeerKey handshake for direct links is allowed | |
312 | * | |
313 | * This is only used when both RSN/WPA2 and IEEE 802.11e (QoS) are | |
314 | * enabled. | |
315 | * | |
316 | * 0 = disabled (default) | |
317 | * 1 = enabled | |
318 | */ | |
319 | int peerkey; | |
320 | ||
321 | /** | |
322 | * id_str - Network identifier string for external scripts | |
323 | * | |
324 | * This value is passed to external ctrl_iface monitors in | |
325 | * WPA_EVENT_CONNECTED event and wpa_cli sets this as WPA_ID_STR | |
326 | * environment variable for action scripts. | |
327 | */ | |
328 | char *id_str; | |
329 | ||
330 | #ifdef CONFIG_IEEE80211W | |
331 | /** | |
332 | * ieee80211w - Whether management frame protection is enabled | |
333 | * | |
334 | * This value is used to configure policy for management frame | |
335 | * protection (IEEE 802.11w). 0 = disabled, 1 = optional, 2 = required. | |
336 | */ | |
c746331b | 337 | enum mfp_options ieee80211w; |
6fc6879b JM |
338 | #endif /* CONFIG_IEEE80211W */ |
339 | ||
340 | /** | |
341 | * frequency - Channel frequency in megahertz (MHz) for IBSS | |
342 | * | |
343 | * This value is used to configure the initial channel for IBSS (adhoc) | |
344 | * networks, e.g., 2412 = IEEE 802.11b/g channel 1. It is ignored in | |
345 | * the infrastructure mode. In addition, this value is only used by the | |
346 | * station that creates the IBSS. If an IBSS network with the | |
347 | * configured SSID is already present, the frequency of the network | |
348 | * will be used instead of this configured value. | |
349 | */ | |
350 | int frequency; | |
581a8cde JM |
351 | |
352 | /** | |
353 | * wpa_ptk_rekey - Maximum lifetime for PTK in seconds | |
354 | * | |
355 | * This value can be used to enforce rekeying of PTK to mitigate some | |
356 | * attacks against TKIP deficiencies. | |
357 | */ | |
358 | int wpa_ptk_rekey; | |
d3a98225 JM |
359 | |
360 | /** | |
361 | * scan_freq - Array of frequencies to scan or %NULL for all | |
362 | * | |
363 | * This is an optional zero-terminated array of frequencies in | |
364 | * megahertz (MHz) to include in scan requests when searching for this | |
365 | * network. This can be used to speed up scanning when the network is | |
366 | * known to not use all possible channels. | |
367 | */ | |
368 | int *scan_freq; | |
60b94c98 JM |
369 | |
370 | /** | |
371 | * bgscan - Background scan and roaming parameters or %NULL if none | |
372 | * | |
373 | * This is an optional set of parameters for background scanning and | |
374 | * roaming within a network (ESS) in following format: | |
375 | * <bgscan module name>:<module parameters> | |
376 | */ | |
377 | char *bgscan; | |
b766a9a2 JM |
378 | |
379 | /** | |
380 | * freq_list - Array of allowed frequencies or %NULL for all | |
381 | * | |
382 | * This is an optional zero-terminated array of frequencies in | |
383 | * megahertz (MHz) to allow for selecting the BSS. If set, scan results | |
384 | * that do not match any of the specified frequencies are not | |
385 | * considered when selecting a BSS. | |
386 | */ | |
387 | int *freq_list; | |
2c5d725c JM |
388 | |
389 | /** | |
390 | * p2p_group - Network generated as a P2P group (used internally) | |
391 | */ | |
392 | int p2p_group; | |
393 | ||
394 | /** | |
395 | * p2p_persistent_group - Whether this is a persistent group | |
396 | */ | |
397 | int p2p_persistent_group; | |
398 | ||
399 | /** | |
400 | * temporary - Whether this network is temporary and not to be saved | |
401 | */ | |
402 | int temporary; | |
6fc6879b JM |
403 | }; |
404 | ||
405 | #endif /* CONFIG_SSID_H */ |