235 lines
6.7 KiB
C
235 lines
6.7 KiB
C
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/*
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* hostapd - IEEE 802.11i-2004 / WPA Authenticator: Internal definitions
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* Copyright (c) 2004-2007, Jouni Malinen <j@w1.fi>
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#ifndef WPA_AUTH_I_H
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#define WPA_AUTH_I_H
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/* max(dot11RSNAConfigGroupUpdateCount,dot11RSNAConfigPairwiseUpdateCount) */
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#define RSNA_MAX_EAPOL_RETRIES 4
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struct wpa_group;
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struct wpa_stsl_negotiation {
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struct wpa_stsl_negotiation *next;
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u8 initiator[ETH_ALEN];
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u8 peer[ETH_ALEN];
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};
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struct wpa_state_machine {
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struct wpa_authenticator *wpa_auth;
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struct wpa_group *group;
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u8 addr[ETH_ALEN];
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enum {
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WPA_PTK_INITIALIZE, WPA_PTK_DISCONNECT, WPA_PTK_DISCONNECTED,
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WPA_PTK_AUTHENTICATION, WPA_PTK_AUTHENTICATION2,
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WPA_PTK_INITPMK, WPA_PTK_INITPSK, WPA_PTK_PTKSTART,
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WPA_PTK_PTKCALCNEGOTIATING, WPA_PTK_PTKCALCNEGOTIATING2,
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WPA_PTK_PTKINITNEGOTIATING, WPA_PTK_PTKINITDONE
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} wpa_ptk_state;
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enum {
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WPA_PTK_GROUP_IDLE = 0,
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WPA_PTK_GROUP_REKEYNEGOTIATING,
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WPA_PTK_GROUP_REKEYESTABLISHED,
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WPA_PTK_GROUP_KEYERROR
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} wpa_ptk_group_state;
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Boolean Init;
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Boolean DeauthenticationRequest;
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Boolean AuthenticationRequest;
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Boolean ReAuthenticationRequest;
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Boolean Disconnect;
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int TimeoutCtr;
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int GTimeoutCtr;
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Boolean TimeoutEvt;
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Boolean EAPOLKeyReceived;
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Boolean EAPOLKeyPairwise;
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Boolean EAPOLKeyRequest;
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Boolean MICVerified;
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Boolean GUpdateStationKeys;
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u8 ANonce[WPA_NONCE_LEN];
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u8 SNonce[WPA_NONCE_LEN];
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u8 PMK[PMK_LEN];
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struct wpa_ptk PTK;
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Boolean PTK_valid;
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Boolean pairwise_set;
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int keycount;
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Boolean Pair;
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struct wpa_key_replay_counter {
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u8 counter[WPA_REPLAY_COUNTER_LEN];
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Boolean valid;
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} key_replay[RSNA_MAX_EAPOL_RETRIES],
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prev_key_replay[RSNA_MAX_EAPOL_RETRIES];
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Boolean PInitAKeys; /* WPA only, not in IEEE 802.11i */
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Boolean PTKRequest; /* not in IEEE 802.11i state machine */
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Boolean has_GTK;
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Boolean PtkGroupInit; /* init request for PTK Group state machine */
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u8 *last_rx_eapol_key; /* starting from IEEE 802.1X header */
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size_t last_rx_eapol_key_len;
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unsigned int changed:1;
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unsigned int in_step_loop:1;
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unsigned int pending_deinit:1;
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unsigned int started:1;
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unsigned int mgmt_frame_prot:1;
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unsigned int rx_eapol_key_secure:1;
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unsigned int update_snonce:1;
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#ifdef CONFIG_IEEE80211R
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unsigned int ft_completed:1;
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unsigned int pmk_r1_name_valid:1;
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#endif /* CONFIG_IEEE80211R */
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unsigned int is_wnmsleep:1;
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u8 req_replay_counter[WPA_REPLAY_COUNTER_LEN];
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int req_replay_counter_used;
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u8 *wpa_ie;
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size_t wpa_ie_len;
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enum {
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WPA_VERSION_NO_WPA = 0 /* WPA not used */,
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WPA_VERSION_WPA = 1 /* WPA / IEEE 802.11i/D3.0 */,
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WPA_VERSION_WPA2 = 2 /* WPA2 / IEEE 802.11i */
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} wpa;
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int pairwise; /* Pairwise cipher suite, WPA_CIPHER_* */
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int wpa_key_mgmt; /* the selected WPA_KEY_MGMT_* */
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// struct rsn_pmksa_cache_entry *pmksa;
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// u32 dot11RSNAStatsTKIPLocalMICFailures;
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// u32 dot11RSNAStatsTKIPRemoteMICFailures;
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#ifdef CONFIG_IEEE80211R
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u8 xxkey[PMK_LEN]; /* PSK or the second 256 bits of MSK */
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size_t xxkey_len;
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u8 pmk_r1_name[WPA_PMK_NAME_LEN]; /* PMKR1Name derived from FT Auth
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* Request */
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u8 r0kh_id[FT_R0KH_ID_MAX_LEN]; /* R0KH-ID from FT Auth Request */
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size_t r0kh_id_len;
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u8 sup_pmk_r1_name[WPA_PMK_NAME_LEN]; /* PMKR1Name from EAPOL-Key
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* message 2/4 */
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u8 *assoc_resp_ftie;
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#endif /* CONFIG_IEEE80211R */
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int pending_1_of_4_timeout;
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};
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/* per group key state machine data */
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struct wpa_group {
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struct wpa_group *next;
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int vlan_id;
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Boolean GInit;
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int GKeyDoneStations;
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Boolean GTKReKey;
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int GTK_len;
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int GN, GM;
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Boolean GTKAuthenticator;
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u8 Counter[WPA_NONCE_LEN];
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enum {
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WPA_GROUP_GTK_INIT = 0,
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WPA_GROUP_SETKEYS, WPA_GROUP_SETKEYSDONE
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} wpa_group_state;
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u8 GMK[WPA_GMK_LEN];
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u8 GTK[2][WPA_GTK_MAX_LEN];
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u8 GNonce[WPA_NONCE_LEN];
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Boolean changed;
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Boolean first_sta_seen;
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Boolean reject_4way_hs_for_entropy;
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#ifdef CONFIG_IEEE80211W
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u8 IGTK[2][WPA_IGTK_LEN];
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int GN_igtk, GM_igtk;
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#endif /* CONFIG_IEEE80211W */
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};
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struct wpa_ft_pmk_cache;
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/* per authenticator data */
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struct wpa_authenticator {
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struct wpa_group *group;
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// unsigned int dot11RSNAStatsTKIPRemoteMICFailures;
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// u32 dot11RSNAAuthenticationSuiteSelected;
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// u32 dot11RSNAPairwiseCipherSelected;
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// u32 dot11RSNAGroupCipherSelected;
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// u8 dot11RSNAPMKIDUsed[PMKID_LEN];
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// u32 dot11RSNAAuthenticationSuiteRequested; /* FIX: update */
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// u32 dot11RSNAPairwiseCipherRequested; /* FIX: update */
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// u32 dot11RSNAGroupCipherRequested; /* FIX: update */
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// unsigned int dot11RSNATKIPCounterMeasuresInvoked;
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// unsigned int dot11RSNA4WayHandshakeFailures;
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// struct wpa_stsl_negotiation *stsl_negotiations;
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struct wpa_auth_config conf;
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// struct wpa_auth_callbacks cb;
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u8 *wpa_ie;
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size_t wpa_ie_len;
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u8 addr[ETH_ALEN];
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// struct rsn_pmksa_cache *pmksa;
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// struct wpa_ft_pmk_cache *ft_pmk_cache;
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};
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int wpa_write_rsn_ie(struct wpa_auth_config *conf, u8 *buf, size_t len,
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const u8 *pmkid);
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#if 0
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void wpa_auth_logger(struct wpa_authenticator *wpa_auth, const u8 *addr,
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logger_level level, const char *txt);
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void wpa_auth_vlogger(struct wpa_authenticator *wpa_auth, const u8 *addr,
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logger_level level, const char *fmt, ...);
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#endif
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void __wpa_send_eapol(struct wpa_authenticator *wpa_auth,
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struct wpa_state_machine *sm, int key_info,
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const u8 *key_rsc, const u8 *nonce,
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const u8 *kde, size_t kde_len,
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int keyidx, int encr, int force_version);
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int wpa_auth_for_each_sta(struct wpa_authenticator *wpa_auth,
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int (*cb)(struct wpa_state_machine *sm, void *ctx),
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void *cb_ctx);
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int wpa_auth_for_each_auth(struct wpa_authenticator *wpa_auth,
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int (*cb)(struct wpa_authenticator *a, void *ctx),
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void *cb_ctx);
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#ifdef CONFIG_PEERKEY
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int wpa_stsl_remove(struct wpa_authenticator *wpa_auth,
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struct wpa_stsl_negotiation *neg);
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void wpa_smk_error(struct wpa_authenticator *wpa_auth,
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struct wpa_state_machine *sm, struct wpa_eapol_key *key);
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void wpa_smk_m1(struct wpa_authenticator *wpa_auth,
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struct wpa_state_machine *sm, struct wpa_eapol_key *key);
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void wpa_smk_m3(struct wpa_authenticator *wpa_auth,
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struct wpa_state_machine *sm, struct wpa_eapol_key *key);
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#endif /* CONFIG_PEERKEY */
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#ifdef CONFIG_IEEE80211R
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int wpa_write_mdie(struct wpa_auth_config *conf, u8 *buf, size_t len);
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int wpa_write_ftie(struct wpa_auth_config *conf, const u8 *r0kh_id,
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size_t r0kh_id_len,
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const u8 *anonce, const u8 *snonce,
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u8 *buf, size_t len, const u8 *subelem,
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size_t subelem_len);
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int wpa_auth_derive_ptk_ft(struct wpa_state_machine *sm, const u8 *pmk,
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struct wpa_ptk *ptk, size_t ptk_len);
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struct wpa_ft_pmk_cache * wpa_ft_pmk_cache_init(void);
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void wpa_ft_pmk_cache_deinit(struct wpa_ft_pmk_cache *cache);
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void wpa_ft_install_ptk(struct wpa_state_machine *sm);
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#endif /* CONFIG_IEEE80211R */
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#endif /* WPA_AUTH_I_H */
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