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Store a copy of Association Request RSNXE in AP mode for later use
[thirdparty/hostap.git] / src / ap / wpa_auth_i.h
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1/*
2 * hostapd - IEEE 802.11i-2004 / WPA Authenticator: Internal definitions
98cd3d1c 3 * Copyright (c) 2004-2015, Jouni Malinen <j@w1.fi>
6fc6879b 4 *
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5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
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7 */
8
9#ifndef WPA_AUTH_I_H
10#define WPA_AUTH_I_H
11
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12#include "utils/list.h"
13
22a299ee 14/* max(dot11RSNAConfigGroupUpdateCount,dot11RSNAConfigPairwiseUpdateCount) */
bae61562 15#define RSNA_MAX_EAPOL_RETRIES 4
22a299ee 16
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17struct wpa_group;
18
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19struct wpa_state_machine {
20 struct wpa_authenticator *wpa_auth;
21 struct wpa_group *group;
22
23 u8 addr[ETH_ALEN];
94ddef3e 24 u8 p2p_dev_addr[ETH_ALEN];
36536639 25 u16 auth_alg;
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26
27 enum {
28 WPA_PTK_INITIALIZE, WPA_PTK_DISCONNECT, WPA_PTK_DISCONNECTED,
29 WPA_PTK_AUTHENTICATION, WPA_PTK_AUTHENTICATION2,
30 WPA_PTK_INITPMK, WPA_PTK_INITPSK, WPA_PTK_PTKSTART,
31 WPA_PTK_PTKCALCNEGOTIATING, WPA_PTK_PTKCALCNEGOTIATING2,
32 WPA_PTK_PTKINITNEGOTIATING, WPA_PTK_PTKINITDONE
33 } wpa_ptk_state;
34
35 enum {
36 WPA_PTK_GROUP_IDLE = 0,
37 WPA_PTK_GROUP_REKEYNEGOTIATING,
38 WPA_PTK_GROUP_REKEYESTABLISHED,
39 WPA_PTK_GROUP_KEYERROR
40 } wpa_ptk_group_state;
41
42 Boolean Init;
43 Boolean DeauthenticationRequest;
44 Boolean AuthenticationRequest;
45 Boolean ReAuthenticationRequest;
46 Boolean Disconnect;
567da5bb 47 u16 disconnect_reason; /* specific reason code to use with Disconnect */
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48 u32 TimeoutCtr;
49 u32 GTimeoutCtr;
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50 Boolean TimeoutEvt;
51 Boolean EAPOLKeyReceived;
52 Boolean EAPOLKeyPairwise;
53 Boolean EAPOLKeyRequest;
54 Boolean MICVerified;
55 Boolean GUpdateStationKeys;
56 u8 ANonce[WPA_NONCE_LEN];
57 u8 SNonce[WPA_NONCE_LEN];
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58 u8 alt_SNonce[WPA_NONCE_LEN];
59 u8 alt_replay_counter[WPA_REPLAY_COUNTER_LEN];
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60 u8 PMK[PMK_LEN_MAX];
61 unsigned int pmk_len;
9d94e4bb 62 u8 pmkid[PMKID_LEN]; /* valid if pmkid_set == 1 */
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63 struct wpa_ptk PTK;
64 Boolean PTK_valid;
65 Boolean pairwise_set;
0e3bd7ac 66 Boolean tk_already_set;
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67 int keycount;
68 Boolean Pair;
68921e24 69 struct wpa_key_replay_counter {
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70 u8 counter[WPA_REPLAY_COUNTER_LEN];
71 Boolean valid;
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72 } key_replay[RSNA_MAX_EAPOL_RETRIES],
73 prev_key_replay[RSNA_MAX_EAPOL_RETRIES];
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74 Boolean PInitAKeys; /* WPA only, not in IEEE 802.11i */
75 Boolean PTKRequest; /* not in IEEE 802.11i state machine */
76 Boolean has_GTK;
9663596f 77 Boolean PtkGroupInit; /* init request for PTK Group state machine */
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78
79 u8 *last_rx_eapol_key; /* starting from IEEE 802.1X header */
80 size_t last_rx_eapol_key_len;
81
82 unsigned int changed:1;
83 unsigned int in_step_loop:1;
84 unsigned int pending_deinit:1;
85 unsigned int started:1;
86 unsigned int mgmt_frame_prot:1;
0d442aff 87 unsigned int rx_eapol_key_secure:1;
68921e24 88 unsigned int update_snonce:1;
f23c5b17 89 unsigned int alt_snonce_valid:1;
4ec1fd8e 90#ifdef CONFIG_IEEE80211R_AP
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91 unsigned int ft_completed:1;
92 unsigned int pmk_r1_name_valid:1;
4ec1fd8e 93#endif /* CONFIG_IEEE80211R_AP */
d32d94db 94 unsigned int is_wnmsleep:1;
9d94e4bb 95 unsigned int pmkid_set:1;
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96#ifdef CONFIG_OCV
97 unsigned int ocv_enabled:1;
98#endif /* CONFIG_OCV */
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99
100 u8 req_replay_counter[WPA_REPLAY_COUNTER_LEN];
101 int req_replay_counter_used;
102
103 u8 *wpa_ie;
104 size_t wpa_ie_len;
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105 u8 *rsnxe;
106 size_t rsnxe_len;
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107
108 enum {
109 WPA_VERSION_NO_WPA = 0 /* WPA not used */,
110 WPA_VERSION_WPA = 1 /* WPA / IEEE 802.11i/D3.0 */,
111 WPA_VERSION_WPA2 = 2 /* WPA2 / IEEE 802.11i */
112 } wpa;
113 int pairwise; /* Pairwise cipher suite, WPA_CIPHER_* */
114 int wpa_key_mgmt; /* the selected WPA_KEY_MGMT_* */
115 struct rsn_pmksa_cache_entry *pmksa;
116
117 u32 dot11RSNAStatsTKIPLocalMICFailures;
118 u32 dot11RSNAStatsTKIPRemoteMICFailures;
119
4ec1fd8e 120#ifdef CONFIG_IEEE80211R_AP
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121 u8 xxkey[PMK_LEN_MAX]; /* PSK or the second 256 bits of MSK, or the
122 * first 384 bits of MSK */
6fc6879b 123 size_t xxkey_len;
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124 u8 pmk_r1[PMK_LEN_MAX];
125 unsigned int pmk_r1_len;
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126 u8 pmk_r1_name[WPA_PMK_NAME_LEN]; /* PMKR1Name derived from FT Auth
127 * Request */
128 u8 r0kh_id[FT_R0KH_ID_MAX_LEN]; /* R0KH-ID from FT Auth Request */
129 size_t r0kh_id_len;
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130 u8 sup_pmk_r1_name[WPA_PMK_NAME_LEN]; /* PMKR1Name from EAPOL-Key
131 * message 2/4 */
0f857f43 132 u8 *assoc_resp_ftie;
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133
134 void (*ft_pending_cb)(void *ctx, const u8 *dst, const u8 *bssid,
135 u16 auth_transaction, u16 status,
136 const u8 *ies, size_t ies_len);
137 void *ft_pending_cb_ctx;
138 struct wpabuf *ft_pending_req_ies;
245fc96e 139 u8 ft_pending_pull_nonce[FT_RRB_NONCE_LEN];
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140 u8 ft_pending_auth_transaction;
141 u8 ft_pending_current_ap[ETH_ALEN];
3a46cf93 142 int ft_pending_pull_left_retries;
4ec1fd8e 143#endif /* CONFIG_IEEE80211R_AP */
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144
145 int pending_1_of_4_timeout;
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146
147#ifdef CONFIG_P2P
148 u8 ip_addr[4];
149#endif /* CONFIG_P2P */
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150
151#ifdef CONFIG_FILS
152 u8 fils_key_auth_sta[FILS_MAX_KEY_AUTH_LEN];
153 u8 fils_key_auth_ap[FILS_MAX_KEY_AUTH_LEN];
154 size_t fils_key_auth_len;
07e0117d 155 unsigned int fils_completed:1;
c4fd6d8a 156#endif /* CONFIG_FILS */
3d695328 157
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158#ifdef CONFIG_DPP2
159 struct wpabuf *dpp_z;
160#endif /* CONFIG_DPP2 */
161
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162#ifdef CONFIG_TESTING_OPTIONS
163 void (*eapol_status_cb)(void *ctx1, void *ctx2);
164 void *eapol_status_cb_ctx1;
165 void *eapol_status_cb_ctx2;
166#endif /* CONFIG_TESTING_OPTIONS */
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167};
168
169
170/* per group key state machine data */
171struct wpa_group {
172 struct wpa_group *next;
173 int vlan_id;
174
175 Boolean GInit;
176 int GKeyDoneStations;
177 Boolean GTKReKey;
178 int GTK_len;
179 int GN, GM;
180 Boolean GTKAuthenticator;
181 u8 Counter[WPA_NONCE_LEN];
182
183 enum {
184 WPA_GROUP_GTK_INIT = 0,
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185 WPA_GROUP_SETKEYS, WPA_GROUP_SETKEYSDONE,
186 WPA_GROUP_FATAL_FAILURE
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187 } wpa_group_state;
188
189 u8 GMK[WPA_GMK_LEN];
190 u8 GTK[2][WPA_GTK_MAX_LEN];
191 u8 GNonce[WPA_NONCE_LEN];
192 Boolean changed;
1bdb7ab3 193 Boolean first_sta_seen;
08704cd8 194 Boolean reject_4way_hs_for_entropy;
8dd9f9cd 195 u8 IGTK[2][WPA_IGTK_MAX_LEN];
6fc6879b 196 int GN_igtk, GM_igtk;
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197 /* Number of references except those in struct wpa_group->next */
198 unsigned int references;
7cebc8e2 199 unsigned int num_setup_iface;
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200};
201
202
203struct wpa_ft_pmk_cache;
204
205/* per authenticator data */
206struct wpa_authenticator {
207 struct wpa_group *group;
208
209 unsigned int dot11RSNAStatsTKIPRemoteMICFailures;
210 u32 dot11RSNAAuthenticationSuiteSelected;
211 u32 dot11RSNAPairwiseCipherSelected;
212 u32 dot11RSNAGroupCipherSelected;
213 u8 dot11RSNAPMKIDUsed[PMKID_LEN];
214 u32 dot11RSNAAuthenticationSuiteRequested; /* FIX: update */
215 u32 dot11RSNAPairwiseCipherRequested; /* FIX: update */
216 u32 dot11RSNAGroupCipherRequested; /* FIX: update */
217 unsigned int dot11RSNATKIPCounterMeasuresInvoked;
218 unsigned int dot11RSNA4WayHandshakeFailures;
219
6fc6879b 220 struct wpa_auth_config conf;
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221 const struct wpa_auth_callbacks *cb;
222 void *cb_ctx;
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223
224 u8 *wpa_ie;
225 size_t wpa_ie_len;
226
227 u8 addr[ETH_ALEN];
228
229 struct rsn_pmksa_cache *pmksa;
230 struct wpa_ft_pmk_cache *ft_pmk_cache;
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231
232#ifdef CONFIG_P2P
233 struct bitfield *ip_pool;
234#endif /* CONFIG_P2P */
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235};
236
237
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238#ifdef CONFIG_IEEE80211R_AP
239
240#define FT_REMOTE_SEQ_BACKLOG 16
241struct ft_remote_seq_rx {
242 u32 dom;
243 struct os_reltime time_offset; /* local time - offset = remote time */
244
245 /* accepted sequence numbers: (offset ... offset + 0x40000000]
246 * (except those in last)
247 * dropped sequence numbers: (offset - 0x40000000 ... offset]
248 * all others trigger SEQ_REQ message (except first message)
249 */
250 u32 last[FT_REMOTE_SEQ_BACKLOG];
251 unsigned int num_last;
252 u32 offsetidx;
253
254 struct dl_list queue; /* send nonces + rrb msgs awaiting seq resp */
255};
256
257struct ft_remote_seq_tx {
258 u32 dom; /* non zero if initialized */
259 u32 seq;
260};
261
262struct ft_remote_seq {
263 struct ft_remote_seq_rx rx;
264 struct ft_remote_seq_tx tx;
265};
266
267#endif /* CONFIG_IEEE80211R_AP */
268
269
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270int wpa_write_rsn_ie(struct wpa_auth_config *conf, u8 *buf, size_t len,
271 const u8 *pmkid);
3134bb13 272int wpa_write_rsnxe(struct wpa_auth_config *conf, u8 *buf, size_t len);
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273void wpa_auth_logger(struct wpa_authenticator *wpa_auth, const u8 *addr,
274 logger_level level, const char *txt);
275void wpa_auth_vlogger(struct wpa_authenticator *wpa_auth, const u8 *addr,
276 logger_level level, const char *fmt, ...);
277void __wpa_send_eapol(struct wpa_authenticator *wpa_auth,
278 struct wpa_state_machine *sm, int key_info,
279 const u8 *key_rsc, const u8 *nonce,
280 const u8 *kde, size_t kde_len,
281 int keyidx, int encr, int force_version);
282int wpa_auth_for_each_sta(struct wpa_authenticator *wpa_auth,
283 int (*cb)(struct wpa_state_machine *sm, void *ctx),
284 void *cb_ctx);
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285int wpa_auth_for_each_auth(struct wpa_authenticator *wpa_auth,
286 int (*cb)(struct wpa_authenticator *a, void *ctx),
287 void *cb_ctx);
6fc6879b 288
4ec1fd8e 289#ifdef CONFIG_IEEE80211R_AP
6fc6879b 290int wpa_write_mdie(struct wpa_auth_config *conf, u8 *buf, size_t len);
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291int wpa_write_ftie(struct wpa_auth_config *conf, int use_sha384,
292 const u8 *r0kh_id, size_t r0kh_id_len,
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293 const u8 *anonce, const u8 *snonce,
294 u8 *buf, size_t len, const u8 *subelem,
295 size_t subelem_len);
267c366f 296int wpa_auth_derive_ptk_ft(struct wpa_state_machine *sm, struct wpa_ptk *ptk);
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297struct wpa_ft_pmk_cache * wpa_ft_pmk_cache_init(void);
298void wpa_ft_pmk_cache_deinit(struct wpa_ft_pmk_cache *cache);
0e84c254 299void wpa_ft_install_ptk(struct wpa_state_machine *sm);
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300int wpa_ft_store_pmk_fils(struct wpa_state_machine *sm, const u8 *pmk_r0,
301 const u8 *pmk_r0_name);
4ec1fd8e 302#endif /* CONFIG_IEEE80211R_AP */
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303
304#endif /* WPA_AUTH_I_H */