contrib/wpa_supplicant-0.5.8/wpa_i.h

   1 /*
   2  * wpa_supplicant - Internal WPA state machine definitions
   3  * Copyright (c) 2004-2006, 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_I_H
  16 #define WPA_I_H
  17
  18 struct rsn_pmksa_candidate;
  19
  20 #ifdef _MSC_VER
  21 #pragma pack(push, 1)
  22 #endif /* _MSC_VER */
  23
  24 /**
  25  * struct wpa_ptk - WPA Pairwise Transient Key
  26  * IEEE Std 802.11i-2004 - 8.5.1.2 Pairwise key hierarchy
  27  */
  28 struct wpa_ptk {
  29         u8 kck[16]; /* EAPOL-Key Key Confirmation Key (KCK) */
  30         u8 kek[16]; /* EAPOL-Key Key Encryption Key (KEK) */
  31         u8 tk1[16]; /* Temporal Key 1 (TK1) */
  32         union {
  33                 u8 tk2[16]; /* Temporal Key 2 (TK2) */
  34                 struct {
  35                         u8 tx_mic_key[8];
  36                         u8 rx_mic_key[8];
  37                 } auth;
  38         } u;
  39 } STRUCT_PACKED;
  40
  41 #ifdef _MSC_VER
  42 #pragma pack(pop)
  43 #endif /* _MSC_VER */
  44
  45
  46 #ifdef CONFIG_PEERKEY
  47 #define PEERKEY_MAX_IE_LEN 80
  48 struct wpa_peerkey {
  49         struct wpa_peerkey *next;
  50         int initiator; /* whether this end was initator for SMK handshake */
  51         u8 addr[ETH_ALEN]; /* other end MAC address */
  52         u8 inonce[WPA_NONCE_LEN]; /* Initiator Nonce */
  53         u8 pnonce[WPA_NONCE_LEN]; /* Peer Nonce */
  54         u8 rsnie_i[PEERKEY_MAX_IE_LEN]; /* Initiator RSN IE */
  55         size_t rsnie_i_len;
  56         u8 rsnie_p[PEERKEY_MAX_IE_LEN]; /* Peer RSN IE */
  57         size_t rsnie_p_len;
  58         u8 smk[PMK_LEN];
  59         int smk_complete;
  60         u8 smkid[PMKID_LEN];
  61         u32 lifetime;
  62         os_time_t expiration;
  63         int cipher; /* Selected cipher (WPA_CIPHER_*) */
  64         u8 replay_counter[WPA_REPLAY_COUNTER_LEN];
  65         int replay_counter_set;
  66
  67         struct wpa_ptk stk, tstk;
  68         int stk_set, tstk_set;
  69 };
  70 #else /* CONFIG_PEERKEY */
  71 struct wpa_peerkey;
  72 #endif /* CONFIG_PEERKEY */
  73
  74
  75 /**
  76  * struct wpa_sm - Internal WPA state machine data
  77  */
  78 struct wpa_sm {
  79         u8 pmk[PMK_LEN];
  80         size_t pmk_len;
  81         struct wpa_ptk ptk, tptk;
  82         int ptk_set, tptk_set;
  83         u8 snonce[WPA_NONCE_LEN];
  84         u8 anonce[WPA_NONCE_LEN]; /* ANonce from the last 1/4 msg */
  85         int renew_snonce;
  86         u8 rx_replay_counter[WPA_REPLAY_COUNTER_LEN];
  87         int rx_replay_counter_set;
  88         u8 request_counter[WPA_REPLAY_COUNTER_LEN];
  89
  90         struct eapol_sm *eapol; /* EAPOL state machine from upper level code */
  91
  92         struct rsn_pmksa_cache *pmksa; /* PMKSA cache */
  93         struct rsn_pmksa_cache_entry *cur_pmksa; /* current PMKSA entry */
  94         struct rsn_pmksa_candidate *pmksa_candidates;
  95
  96         struct l2_packet_data *l2_preauth;
  97         struct l2_packet_data *l2_preauth_br;
  98         u8 preauth_bssid[ETH_ALEN]; /* current RSN pre-auth peer or
  99                                      * 00:00:00:00:00:00 if no pre-auth is
 100                                      * in progress */
 101         struct eapol_sm *preauth_eapol;
 102
 103         struct wpa_sm_ctx *ctx;
 104
 105         void *scard_ctx; /* context for smartcard callbacks */
 106         int fast_reauth; /* whether EAP fast re-authentication is enabled */
 107
 108         struct wpa_ssid *cur_ssid;
 109
 110         u8 own_addr[ETH_ALEN];
 111         const char *ifname;
 112         const char *bridge_ifname;
 113         u8 bssid[ETH_ALEN];
 114
 115         unsigned int dot11RSNAConfigPMKLifetime;
 116         unsigned int dot11RSNAConfigPMKReauthThreshold;
 117         unsigned int dot11RSNAConfigSATimeout;
 118
 119         unsigned int dot11RSNA4WayHandshakeFailures;
 120
 121         /* Selected configuration (based on Beacon/ProbeResp WPA IE) */
 122         unsigned int proto;
 123         unsigned int pairwise_cipher;
 124         unsigned int group_cipher;
 125         unsigned int key_mgmt;
 126         unsigned int mgmt_group_cipher;
 127
 128         u8 *assoc_wpa_ie; /* Own WPA/RSN IE from (Re)AssocReq */
 129         size_t assoc_wpa_ie_len;
 130         u8 *ap_wpa_ie, *ap_rsn_ie;
 131         size_t ap_wpa_ie_len, ap_rsn_ie_len;
 132
 133 #ifdef CONFIG_PEERKEY
 134         struct wpa_peerkey *peerkey;
 135 #endif /* CONFIG_PEERKEY */
 136 };
 137
 138
 139 static inline void wpa_sm_set_state(struct wpa_sm *sm, wpa_states state)
 140 {
 141         sm->ctx->set_state(sm->ctx->ctx, state);
 142 }
 143
 144 static inline wpa_states wpa_sm_get_state(struct wpa_sm *sm)
 145 {
 146         return sm->ctx->get_state(sm->ctx->ctx);
 147 }
 148
 149 static inline void wpa_sm_req_scan(struct wpa_sm *sm, int sec, int usec)
 150 {
 151         sm->ctx->req_scan(sm->ctx->ctx, sec, usec);
 152 }
 153
 154 static inline void wpa_sm_deauthenticate(struct wpa_sm *sm, int reason_code)
 155 {
 156         sm->ctx->deauthenticate(sm->ctx->ctx, reason_code);
 157 }
 158
 159 static inline void wpa_sm_disassociate(struct wpa_sm *sm, int reason_code)
 160 {
 161         sm->ctx->disassociate(sm->ctx->ctx, reason_code);
 162 }
 163
 164 static inline int wpa_sm_set_key(struct wpa_sm *sm, wpa_alg alg,
 165                                  const u8 *addr, int key_idx, int set_tx,
 166                                  const u8 *seq, size_t seq_len,
 167                                  const u8 *key, size_t key_len)
 168 {
 169         return sm->ctx->set_key(sm->ctx->ctx, alg, addr, key_idx, set_tx,
 170                                 seq, seq_len, key, key_len);
 171 }
 172
 173 static inline struct wpa_ssid * wpa_sm_get_ssid(struct wpa_sm *sm)
 174 {
 175         return sm->ctx->get_ssid(sm->ctx->ctx);
 176 }
 177
 178 static inline int wpa_sm_get_bssid(struct wpa_sm *sm, u8 *bssid)
 179 {
 180         return sm->ctx->get_bssid(sm->ctx->ctx, bssid);
 181 }
 182
 183 static inline int wpa_sm_ether_send(struct wpa_sm *sm, const u8 *dest,
 184                                     u16 proto, const u8 *buf, size_t len)
 185 {
 186         return sm->ctx->ether_send(sm->ctx->ctx, dest, proto, buf, len);
 187 }
 188
 189 static inline int wpa_sm_get_beacon_ie(struct wpa_sm *sm)
 190 {
 191         return sm->ctx->get_beacon_ie(sm->ctx->ctx);
 192 }
 193
 194 static inline void wpa_sm_cancel_auth_timeout(struct wpa_sm *sm)
 195 {
 196         sm->ctx->cancel_auth_timeout(sm->ctx->ctx);
 197 }
 198
 199 static inline u8 * wpa_sm_alloc_eapol(struct wpa_sm *sm, u8 type,
 200                                       const void *data, u16 data_len,
 201                                       size_t *msg_len, void **data_pos)
 202 {
 203         return sm->ctx->alloc_eapol(sm->ctx->ctx, type, data, data_len,
 204                                     msg_len, data_pos);
 205 }
 206
 207 static inline int wpa_sm_add_pmkid(struct wpa_sm *sm, const u8 *bssid,
 208                                    const u8 *pmkid)
 209 {
 210         return sm->ctx->add_pmkid(sm->ctx->ctx, bssid, pmkid);
 211 }
 212
 213 static inline int wpa_sm_remove_pmkid(struct wpa_sm *sm, const u8 *bssid,
 214                                       const u8 *pmkid)
 215 {
 216         return sm->ctx->remove_pmkid(sm->ctx->ctx, bssid, pmkid);
 217 }
 218
 219 static inline int wpa_sm_mlme_setprotection(struct wpa_sm *sm, const u8 *addr,
 220                                             int protect_type, int key_type)
 221 {
 222         return sm->ctx->mlme_setprotection(sm->ctx->ctx, addr, protect_type,
 223                                            key_type);
 224 }
 225
 226 #endif /* WPA_I_H */