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6fc6879b JM |
1 | /* |
2 | * hostapd - IEEE 802.11i-2004 / WPA Authenticator: Internal definitions | |
3 | * Copyright (c) 2004-2007, 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 WPA_AUTH_I_H | |
16 | #define WPA_AUTH_I_H | |
17 | ||
22a299ee | 18 | /* max(dot11RSNAConfigGroupUpdateCount,dot11RSNAConfigPairwiseUpdateCount) */ |
bae61562 | 19 | #define RSNA_MAX_EAPOL_RETRIES 4 |
22a299ee | 20 | |
6fc6879b JM |
21 | struct wpa_group; |
22 | ||
23 | struct wpa_stsl_negotiation { | |
24 | struct wpa_stsl_negotiation *next; | |
25 | u8 initiator[ETH_ALEN]; | |
26 | u8 peer[ETH_ALEN]; | |
27 | }; | |
28 | ||
29 | ||
30 | struct wpa_state_machine { | |
31 | struct wpa_authenticator *wpa_auth; | |
32 | struct wpa_group *group; | |
33 | ||
34 | u8 addr[ETH_ALEN]; | |
35 | ||
36 | enum { | |
37 | WPA_PTK_INITIALIZE, WPA_PTK_DISCONNECT, WPA_PTK_DISCONNECTED, | |
38 | WPA_PTK_AUTHENTICATION, WPA_PTK_AUTHENTICATION2, | |
39 | WPA_PTK_INITPMK, WPA_PTK_INITPSK, WPA_PTK_PTKSTART, | |
40 | WPA_PTK_PTKCALCNEGOTIATING, WPA_PTK_PTKCALCNEGOTIATING2, | |
41 | WPA_PTK_PTKINITNEGOTIATING, WPA_PTK_PTKINITDONE | |
42 | } wpa_ptk_state; | |
43 | ||
44 | enum { | |
45 | WPA_PTK_GROUP_IDLE = 0, | |
46 | WPA_PTK_GROUP_REKEYNEGOTIATING, | |
47 | WPA_PTK_GROUP_REKEYESTABLISHED, | |
48 | WPA_PTK_GROUP_KEYERROR | |
49 | } wpa_ptk_group_state; | |
50 | ||
51 | Boolean Init; | |
52 | Boolean DeauthenticationRequest; | |
53 | Boolean AuthenticationRequest; | |
54 | Boolean ReAuthenticationRequest; | |
55 | Boolean Disconnect; | |
56 | int TimeoutCtr; | |
57 | int GTimeoutCtr; | |
58 | Boolean TimeoutEvt; | |
59 | Boolean EAPOLKeyReceived; | |
60 | Boolean EAPOLKeyPairwise; | |
61 | Boolean EAPOLKeyRequest; | |
62 | Boolean MICVerified; | |
63 | Boolean GUpdateStationKeys; | |
64 | u8 ANonce[WPA_NONCE_LEN]; | |
65 | u8 SNonce[WPA_NONCE_LEN]; | |
66 | u8 PMK[PMK_LEN]; | |
67 | struct wpa_ptk PTK; | |
68 | Boolean PTK_valid; | |
69 | Boolean pairwise_set; | |
70 | int keycount; | |
71 | Boolean Pair; | |
68921e24 | 72 | struct wpa_key_replay_counter { |
22a299ee JM |
73 | u8 counter[WPA_REPLAY_COUNTER_LEN]; |
74 | Boolean valid; | |
68921e24 JM |
75 | } key_replay[RSNA_MAX_EAPOL_RETRIES], |
76 | prev_key_replay[RSNA_MAX_EAPOL_RETRIES]; | |
6fc6879b JM |
77 | Boolean PInitAKeys; /* WPA only, not in IEEE 802.11i */ |
78 | Boolean PTKRequest; /* not in IEEE 802.11i state machine */ | |
79 | Boolean has_GTK; | |
9663596f | 80 | Boolean PtkGroupInit; /* init request for PTK Group state machine */ |
6fc6879b JM |
81 | |
82 | u8 *last_rx_eapol_key; /* starting from IEEE 802.1X header */ | |
83 | size_t last_rx_eapol_key_len; | |
84 | ||
85 | unsigned int changed:1; | |
86 | unsigned int in_step_loop:1; | |
87 | unsigned int pending_deinit:1; | |
88 | unsigned int started:1; | |
89 | unsigned int mgmt_frame_prot:1; | |
0d442aff | 90 | unsigned int rx_eapol_key_secure:1; |
68921e24 | 91 | unsigned int update_snonce:1; |
6fc6879b JM |
92 | #ifdef CONFIG_IEEE80211R |
93 | unsigned int ft_completed:1; | |
94 | unsigned int pmk_r1_name_valid:1; | |
95 | #endif /* CONFIG_IEEE80211R */ | |
96 | ||
97 | u8 req_replay_counter[WPA_REPLAY_COUNTER_LEN]; | |
98 | int req_replay_counter_used; | |
99 | ||
100 | u8 *wpa_ie; | |
101 | size_t wpa_ie_len; | |
102 | ||
103 | enum { | |
104 | WPA_VERSION_NO_WPA = 0 /* WPA not used */, | |
105 | WPA_VERSION_WPA = 1 /* WPA / IEEE 802.11i/D3.0 */, | |
106 | WPA_VERSION_WPA2 = 2 /* WPA2 / IEEE 802.11i */ | |
107 | } wpa; | |
108 | int pairwise; /* Pairwise cipher suite, WPA_CIPHER_* */ | |
109 | int wpa_key_mgmt; /* the selected WPA_KEY_MGMT_* */ | |
110 | struct rsn_pmksa_cache_entry *pmksa; | |
111 | ||
112 | u32 dot11RSNAStatsTKIPLocalMICFailures; | |
113 | u32 dot11RSNAStatsTKIPRemoteMICFailures; | |
114 | ||
115 | #ifdef CONFIG_IEEE80211R | |
116 | u8 xxkey[PMK_LEN]; /* PSK or the second 256 bits of MSK */ | |
117 | size_t xxkey_len; | |
118 | u8 pmk_r1_name[WPA_PMK_NAME_LEN]; /* PMKR1Name derived from FT Auth | |
119 | * Request */ | |
120 | u8 r0kh_id[FT_R0KH_ID_MAX_LEN]; /* R0KH-ID from FT Auth Request */ | |
121 | size_t r0kh_id_len; | |
26e23750 JM |
122 | u8 sup_pmk_r1_name[WPA_PMK_NAME_LEN]; /* PMKR1Name from EAPOL-Key |
123 | * message 2/4 */ | |
0f857f43 | 124 | u8 *assoc_resp_ftie; |
6fc6879b | 125 | #endif /* CONFIG_IEEE80211R */ |
e4bf4db9 JM |
126 | |
127 | int pending_1_of_4_timeout; | |
6fc6879b JM |
128 | }; |
129 | ||
130 | ||
131 | /* per group key state machine data */ | |
132 | struct wpa_group { | |
133 | struct wpa_group *next; | |
134 | int vlan_id; | |
135 | ||
136 | Boolean GInit; | |
137 | int GKeyDoneStations; | |
138 | Boolean GTKReKey; | |
139 | int GTK_len; | |
140 | int GN, GM; | |
141 | Boolean GTKAuthenticator; | |
142 | u8 Counter[WPA_NONCE_LEN]; | |
143 | ||
144 | enum { | |
145 | WPA_GROUP_GTK_INIT = 0, | |
146 | WPA_GROUP_SETKEYS, WPA_GROUP_SETKEYSDONE | |
147 | } wpa_group_state; | |
148 | ||
149 | u8 GMK[WPA_GMK_LEN]; | |
150 | u8 GTK[2][WPA_GTK_MAX_LEN]; | |
151 | u8 GNonce[WPA_NONCE_LEN]; | |
152 | Boolean changed; | |
1bdb7ab3 | 153 | Boolean first_sta_seen; |
08704cd8 | 154 | Boolean reject_4way_hs_for_entropy; |
6fc6879b JM |
155 | #ifdef CONFIG_IEEE80211W |
156 | u8 IGTK[2][WPA_IGTK_LEN]; | |
157 | int GN_igtk, GM_igtk; | |
158 | #endif /* CONFIG_IEEE80211W */ | |
159 | }; | |
160 | ||
161 | ||
162 | struct wpa_ft_pmk_cache; | |
163 | ||
164 | /* per authenticator data */ | |
165 | struct wpa_authenticator { | |
166 | struct wpa_group *group; | |
167 | ||
168 | unsigned int dot11RSNAStatsTKIPRemoteMICFailures; | |
169 | u32 dot11RSNAAuthenticationSuiteSelected; | |
170 | u32 dot11RSNAPairwiseCipherSelected; | |
171 | u32 dot11RSNAGroupCipherSelected; | |
172 | u8 dot11RSNAPMKIDUsed[PMKID_LEN]; | |
173 | u32 dot11RSNAAuthenticationSuiteRequested; /* FIX: update */ | |
174 | u32 dot11RSNAPairwiseCipherRequested; /* FIX: update */ | |
175 | u32 dot11RSNAGroupCipherRequested; /* FIX: update */ | |
176 | unsigned int dot11RSNATKIPCounterMeasuresInvoked; | |
177 | unsigned int dot11RSNA4WayHandshakeFailures; | |
178 | ||
179 | struct wpa_stsl_negotiation *stsl_negotiations; | |
180 | ||
181 | struct wpa_auth_config conf; | |
182 | struct wpa_auth_callbacks cb; | |
183 | ||
184 | u8 *wpa_ie; | |
185 | size_t wpa_ie_len; | |
186 | ||
187 | u8 addr[ETH_ALEN]; | |
188 | ||
189 | struct rsn_pmksa_cache *pmksa; | |
190 | struct wpa_ft_pmk_cache *ft_pmk_cache; | |
191 | }; | |
192 | ||
193 | ||
194 | int wpa_write_rsn_ie(struct wpa_auth_config *conf, u8 *buf, size_t len, | |
195 | const u8 *pmkid); | |
196 | void wpa_auth_logger(struct wpa_authenticator *wpa_auth, const u8 *addr, | |
197 | logger_level level, const char *txt); | |
198 | void wpa_auth_vlogger(struct wpa_authenticator *wpa_auth, const u8 *addr, | |
199 | logger_level level, const char *fmt, ...); | |
200 | void __wpa_send_eapol(struct wpa_authenticator *wpa_auth, | |
201 | struct wpa_state_machine *sm, int key_info, | |
202 | const u8 *key_rsc, const u8 *nonce, | |
203 | const u8 *kde, size_t kde_len, | |
204 | int keyidx, int encr, int force_version); | |
205 | int wpa_auth_for_each_sta(struct wpa_authenticator *wpa_auth, | |
206 | int (*cb)(struct wpa_state_machine *sm, void *ctx), | |
207 | void *cb_ctx); | |
bf98f7f3 JM |
208 | int wpa_auth_for_each_auth(struct wpa_authenticator *wpa_auth, |
209 | int (*cb)(struct wpa_authenticator *a, void *ctx), | |
210 | void *cb_ctx); | |
6fc6879b JM |
211 | |
212 | #ifdef CONFIG_PEERKEY | |
213 | int wpa_stsl_remove(struct wpa_authenticator *wpa_auth, | |
214 | struct wpa_stsl_negotiation *neg); | |
215 | void wpa_smk_error(struct wpa_authenticator *wpa_auth, | |
216 | struct wpa_state_machine *sm, struct wpa_eapol_key *key); | |
217 | void wpa_smk_m1(struct wpa_authenticator *wpa_auth, | |
218 | struct wpa_state_machine *sm, struct wpa_eapol_key *key); | |
219 | void wpa_smk_m3(struct wpa_authenticator *wpa_auth, | |
220 | struct wpa_state_machine *sm, struct wpa_eapol_key *key); | |
221 | #endif /* CONFIG_PEERKEY */ | |
222 | ||
223 | #ifdef CONFIG_IEEE80211R | |
224 | int wpa_write_mdie(struct wpa_auth_config *conf, u8 *buf, size_t len); | |
86dfabb8 JM |
225 | int wpa_write_ftie(struct wpa_auth_config *conf, const u8 *r0kh_id, |
226 | size_t r0kh_id_len, | |
227 | const u8 *anonce, const u8 *snonce, | |
228 | u8 *buf, size_t len, const u8 *subelem, | |
229 | size_t subelem_len); | |
6fc6879b | 230 | int wpa_auth_derive_ptk_ft(struct wpa_state_machine *sm, const u8 *pmk, |
c0a61908 | 231 | struct wpa_ptk *ptk, size_t ptk_len); |
6fc6879b JM |
232 | struct wpa_ft_pmk_cache * wpa_ft_pmk_cache_init(void); |
233 | void wpa_ft_pmk_cache_deinit(struct wpa_ft_pmk_cache *cache); | |
0e84c254 | 234 | void wpa_ft_install_ptk(struct wpa_state_machine *sm); |
6fc6879b JM |
235 | #endif /* CONFIG_IEEE80211R */ |
236 | ||
237 | #endif /* WPA_AUTH_I_H */ |