wpa_auth_i.h revision 1f69aa52ea2e0a73ac502565df8c666ee49cab6a
1d59149d3f449800012d74d897e7b2fcfef80449eEric Anholt/* 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 18/* max(dot11RSNAConfigGroupUpdateCount,dot11RSNAConfigPairwiseUpdateCount) */ 19#define RSNA_MAX_EAPOL_RETRIES 4 20 21struct wpa_group; 22 23struct wpa_stsl_negotiation { 24 struct wpa_stsl_negotiation *next; 25 u8 initiator[ETH_ALEN]; 26 u8 peer[ETH_ALEN]; 27}; 28 29 30struct 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; 72 struct { 73 u8 counter[WPA_REPLAY_COUNTER_LEN]; 74 Boolean valid; 75 } key_replay[RSNA_MAX_EAPOL_RETRIES]; 76 Boolean PInitAKeys; /* WPA only, not in IEEE 802.11i */ 77 Boolean PTKRequest; /* not in IEEE 802.11i state machine */ 78 Boolean has_GTK; 79 Boolean PtkGroupInit; /* init request for PTK Group state machine */ 80 81 u8 *last_rx_eapol_key; /* starting from IEEE 802.1X header */ 82 size_t last_rx_eapol_key_len; 83 84 unsigned int changed:1; 85 unsigned int in_step_loop:1; 86 unsigned int pending_deinit:1; 87 unsigned int started:1; 88 unsigned int mgmt_frame_prot:1; 89 unsigned int rx_eapol_key_secure:1; 90#ifdef CONFIG_IEEE80211R 91 unsigned int ft_completed:1; 92 unsigned int pmk_r1_name_valid:1; 93#endif /* CONFIG_IEEE80211R */ 94 95 u8 req_replay_counter[WPA_REPLAY_COUNTER_LEN]; 96 int req_replay_counter_used; 97 98 u8 *wpa_ie; 99 size_t wpa_ie_len; 100 101 enum { 102 WPA_VERSION_NO_WPA = 0 /* WPA not used */, 103 WPA_VERSION_WPA = 1 /* WPA / IEEE 802.11i/D3.0 */, 104 WPA_VERSION_WPA2 = 2 /* WPA2 / IEEE 802.11i */ 105 } wpa; 106 int pairwise; /* Pairwise cipher suite, WPA_CIPHER_* */ 107 int wpa_key_mgmt; /* the selected WPA_KEY_MGMT_* */ 108 struct rsn_pmksa_cache_entry *pmksa; 109 110 u32 dot11RSNAStatsTKIPLocalMICFailures; 111 u32 dot11RSNAStatsTKIPRemoteMICFailures; 112 113#ifdef CONFIG_IEEE80211R 114 u8 xxkey[PMK_LEN]; /* PSK or the second 256 bits of MSK */ 115 size_t xxkey_len; 116 u8 pmk_r1_name[WPA_PMK_NAME_LEN]; /* PMKR1Name derived from FT Auth 117 * Request */ 118 u8 r0kh_id[FT_R0KH_ID_MAX_LEN]; /* R0KH-ID from FT Auth Request */ 119 size_t r0kh_id_len; 120 u8 sup_pmk_r1_name[WPA_PMK_NAME_LEN]; /* PMKR1Name from EAPOL-Key 121 * message 2/4 */ 122 u8 *assoc_resp_ftie; 123#endif /* CONFIG_IEEE80211R */ 124 125 int pending_1_of_4_timeout; 126}; 127 128 129/* per group key state machine data */ 130struct wpa_group { 131 struct wpa_group *next; 132 int vlan_id; 133 134 Boolean GInit; 135 int GKeyDoneStations; 136 Boolean GTKReKey; 137 int GTK_len; 138 int GN, GM; 139 Boolean GTKAuthenticator; 140 u8 Counter[WPA_NONCE_LEN]; 141 142 enum { 143 WPA_GROUP_GTK_INIT = 0, 144 WPA_GROUP_SETKEYS, WPA_GROUP_SETKEYSDONE 145 } wpa_group_state; 146 147 u8 GMK[WPA_GMK_LEN]; 148 u8 GTK[2][WPA_GTK_MAX_LEN]; 149 u8 GNonce[WPA_NONCE_LEN]; 150 Boolean changed; 151 Boolean first_sta_seen; 152 Boolean reject_4way_hs_for_entropy; 153#ifdef CONFIG_IEEE80211W 154 u8 IGTK[2][WPA_IGTK_LEN]; 155 int GN_igtk, GM_igtk; 156#endif /* CONFIG_IEEE80211W */ 157}; 158 159 160struct wpa_ft_pmk_cache; 161 162/* per authenticator data */ 163struct wpa_authenticator { 164 struct wpa_group *group; 165 166 unsigned int dot11RSNAStatsTKIPRemoteMICFailures; 167 u32 dot11RSNAAuthenticationSuiteSelected; 168 u32 dot11RSNAPairwiseCipherSelected; 169 u32 dot11RSNAGroupCipherSelected; 170 u8 dot11RSNAPMKIDUsed[PMKID_LEN]; 171 u32 dot11RSNAAuthenticationSuiteRequested; /* FIX: update */ 172 u32 dot11RSNAPairwiseCipherRequested; /* FIX: update */ 173 u32 dot11RSNAGroupCipherRequested; /* FIX: update */ 174 unsigned int dot11RSNATKIPCounterMeasuresInvoked; 175 unsigned int dot11RSNA4WayHandshakeFailures; 176 177 struct wpa_stsl_negotiation *stsl_negotiations; 178 179 struct wpa_auth_config conf; 180 struct wpa_auth_callbacks cb; 181 182 u8 *wpa_ie; 183 size_t wpa_ie_len; 184 185 u8 addr[ETH_ALEN]; 186 187 struct rsn_pmksa_cache *pmksa; 188 struct wpa_ft_pmk_cache *ft_pmk_cache; 189}; 190 191 192int wpa_write_rsn_ie(struct wpa_auth_config *conf, u8 *buf, size_t len, 193 const u8 *pmkid); 194void wpa_auth_logger(struct wpa_authenticator *wpa_auth, const u8 *addr, 195 logger_level level, const char *txt); 196void wpa_auth_vlogger(struct wpa_authenticator *wpa_auth, const u8 *addr, 197 logger_level level, const char *fmt, ...); 198void __wpa_send_eapol(struct wpa_authenticator *wpa_auth, 199 struct wpa_state_machine *sm, int key_info, 200 const u8 *key_rsc, const u8 *nonce, 201 const u8 *kde, size_t kde_len, 202 int keyidx, int encr, int force_version); 203int wpa_auth_for_each_sta(struct wpa_authenticator *wpa_auth, 204 int (*cb)(struct wpa_state_machine *sm, void *ctx), 205 void *cb_ctx); 206int wpa_auth_for_each_auth(struct wpa_authenticator *wpa_auth, 207 int (*cb)(struct wpa_authenticator *a, void *ctx), 208 void *cb_ctx); 209 210#ifdef CONFIG_PEERKEY 211int wpa_stsl_remove(struct wpa_authenticator *wpa_auth, 212 struct wpa_stsl_negotiation *neg); 213void wpa_smk_error(struct wpa_authenticator *wpa_auth, 214 struct wpa_state_machine *sm, struct wpa_eapol_key *key); 215void wpa_smk_m1(struct wpa_authenticator *wpa_auth, 216 struct wpa_state_machine *sm, struct wpa_eapol_key *key); 217void wpa_smk_m3(struct wpa_authenticator *wpa_auth, 218 struct wpa_state_machine *sm, struct wpa_eapol_key *key); 219#endif /* CONFIG_PEERKEY */ 220 221#ifdef CONFIG_IEEE80211R 222int wpa_write_mdie(struct wpa_auth_config *conf, u8 *buf, size_t len); 223int wpa_write_ftie(struct wpa_auth_config *conf, const u8 *r0kh_id, 224 size_t r0kh_id_len, 225 const u8 *anonce, const u8 *snonce, 226 u8 *buf, size_t len, const u8 *subelem, 227 size_t subelem_len); 228int wpa_auth_derive_ptk_ft(struct wpa_state_machine *sm, const u8 *pmk, 229 struct wpa_ptk *ptk, size_t ptk_len); 230struct wpa_ft_pmk_cache * wpa_ft_pmk_cache_init(void); 231void wpa_ft_pmk_cache_deinit(struct wpa_ft_pmk_cache *cache); 232void wpa_ft_install_ptk(struct wpa_state_machine *sm); 233#endif /* CONFIG_IEEE80211R */ 234 235#endif /* WPA_AUTH_I_H */ 236