/* * hostapd - IEEE 802.11i-2004 / WPA Authenticator: Internal definitions * Copyright (c) 2004-2015, Jouni Malinen * * This software may be distributed under the terms of the BSD license. * See README for more details. */ #ifndef WPA_AUTH_I_H #define WPA_AUTH_I_H #include "utils/list.h" /* max(dot11RSNAConfigGroupUpdateCount,dot11RSNAConfigPairwiseUpdateCount) */ #define RSNA_MAX_EAPOL_RETRIES 4 struct wpa_group; struct wpa_state_machine { struct wpa_authenticator *wpa_auth; struct wpa_group *group; u8 addr[ETH_ALEN]; u8 p2p_dev_addr[ETH_ALEN]; enum { WPA_PTK_INITIALIZE, WPA_PTK_DISCONNECT, WPA_PTK_DISCONNECTED, WPA_PTK_AUTHENTICATION, WPA_PTK_AUTHENTICATION2, WPA_PTK_INITPMK, WPA_PTK_INITPSK, WPA_PTK_PTKSTART, WPA_PTK_PTKCALCNEGOTIATING, WPA_PTK_PTKCALCNEGOTIATING2, WPA_PTK_PTKINITNEGOTIATING, WPA_PTK_PTKINITDONE } wpa_ptk_state; enum { WPA_PTK_GROUP_IDLE = 0, WPA_PTK_GROUP_REKEYNEGOTIATING, WPA_PTK_GROUP_REKEYESTABLISHED, WPA_PTK_GROUP_KEYERROR } wpa_ptk_group_state; Boolean Init; Boolean DeauthenticationRequest; Boolean AuthenticationRequest; Boolean ReAuthenticationRequest; Boolean Disconnect; u16 disconnect_reason; /* specific reason code to use with Disconnect */ u32 TimeoutCtr; u32 GTimeoutCtr; Boolean TimeoutEvt; Boolean EAPOLKeyReceived; Boolean EAPOLKeyPairwise; Boolean EAPOLKeyRequest; Boolean MICVerified; Boolean GUpdateStationKeys; u8 ANonce[WPA_NONCE_LEN]; u8 SNonce[WPA_NONCE_LEN]; u8 alt_SNonce[WPA_NONCE_LEN]; u8 alt_replay_counter[WPA_REPLAY_COUNTER_LEN]; u8 PMK[PMK_LEN_MAX]; unsigned int pmk_len; u8 pmkid[PMKID_LEN]; /* valid if pmkid_set == 1 */ struct wpa_ptk PTK; Boolean PTK_valid; Boolean pairwise_set; Boolean tk_already_set; int keycount; Boolean Pair; struct wpa_key_replay_counter { u8 counter[WPA_REPLAY_COUNTER_LEN]; Boolean valid; } key_replay[RSNA_MAX_EAPOL_RETRIES], prev_key_replay[RSNA_MAX_EAPOL_RETRIES]; Boolean PInitAKeys; /* WPA only, not in IEEE 802.11i */ Boolean PTKRequest; /* not in IEEE 802.11i state machine */ Boolean has_GTK; Boolean PtkGroupInit; /* init request for PTK Group state machine */ u8 *last_rx_eapol_key; /* starting from IEEE 802.1X header */ size_t last_rx_eapol_key_len; unsigned int changed:1; unsigned int in_step_loop:1; unsigned int pending_deinit:1; unsigned int started:1; unsigned int mgmt_frame_prot:1; unsigned int rx_eapol_key_secure:1; unsigned int update_snonce:1; unsigned int alt_snonce_valid:1; #ifdef CONFIG_IEEE80211R_AP unsigned int ft_completed:1; unsigned int pmk_r1_name_valid:1; #endif /* CONFIG_IEEE80211R_AP */ unsigned int is_wnmsleep:1; unsigned int pmkid_set:1; u8 req_replay_counter[WPA_REPLAY_COUNTER_LEN]; int req_replay_counter_used; u8 *wpa_ie; size_t wpa_ie_len; enum { WPA_VERSION_NO_WPA = 0 /* WPA not used */, WPA_VERSION_WPA = 1 /* WPA / IEEE 802.11i/D3.0 */, WPA_VERSION_WPA2 = 2 /* WPA2 / IEEE 802.11i */ } wpa; int pairwise; /* Pairwise cipher suite, WPA_CIPHER_* */ int wpa_key_mgmt; /* the selected WPA_KEY_MGMT_* */ struct rsn_pmksa_cache_entry *pmksa; u32 dot11RSNAStatsTKIPLocalMICFailures; u32 dot11RSNAStatsTKIPRemoteMICFailures; #ifdef CONFIG_IEEE80211R_AP u8 xxkey[PMK_LEN]; /* PSK or the second 256 bits of MSK */ size_t xxkey_len; u8 pmk_r1_name[WPA_PMK_NAME_LEN]; /* PMKR1Name derived from FT Auth * Request */ u8 r0kh_id[FT_R0KH_ID_MAX_LEN]; /* R0KH-ID from FT Auth Request */ size_t r0kh_id_len; u8 sup_pmk_r1_name[WPA_PMK_NAME_LEN]; /* PMKR1Name from EAPOL-Key * message 2/4 */ u8 *assoc_resp_ftie; void (*ft_pending_cb)(void *ctx, const u8 *dst, const u8 *bssid, u16 auth_transaction, u16 status, const u8 *ies, size_t ies_len); void *ft_pending_cb_ctx; struct wpabuf *ft_pending_req_ies; u8 ft_pending_pull_nonce[FT_RRB_NONCE_LEN]; u8 ft_pending_auth_transaction; u8 ft_pending_current_ap[ETH_ALEN]; int ft_pending_pull_left_retries; #endif /* CONFIG_IEEE80211R_AP */ int pending_1_of_4_timeout; #ifdef CONFIG_P2P u8 ip_addr[4]; #endif /* CONFIG_P2P */ #ifdef CONFIG_FILS u8 fils_key_auth_sta[FILS_MAX_KEY_AUTH_LEN]; u8 fils_key_auth_ap[FILS_MAX_KEY_AUTH_LEN]; size_t fils_key_auth_len; unsigned int fils_completed:1; #endif /* CONFIG_FILS */ #ifdef CONFIG_TESTING_OPTIONS void (*eapol_status_cb)(void *ctx1, void *ctx2); void *eapol_status_cb_ctx1; void *eapol_status_cb_ctx2; #endif /* CONFIG_TESTING_OPTIONS */ }; /* per group key state machine data */ struct wpa_group { struct wpa_group *next; int vlan_id; Boolean GInit; int GKeyDoneStations; Boolean GTKReKey; int GTK_len; int GN, GM; Boolean GTKAuthenticator; u8 Counter[WPA_NONCE_LEN]; enum { WPA_GROUP_GTK_INIT = 0, WPA_GROUP_SETKEYS, WPA_GROUP_SETKEYSDONE, WPA_GROUP_FATAL_FAILURE } wpa_group_state; u8 GMK[WPA_GMK_LEN]; u8 GTK[2][WPA_GTK_MAX_LEN]; u8 GNonce[WPA_NONCE_LEN]; Boolean changed; Boolean first_sta_seen; Boolean reject_4way_hs_for_entropy; #ifdef CONFIG_IEEE80211W u8 IGTK[2][WPA_IGTK_MAX_LEN]; int GN_igtk, GM_igtk; #endif /* CONFIG_IEEE80211W */ /* Number of references except those in struct wpa_group->next */ unsigned int references; unsigned int num_setup_iface; }; struct wpa_ft_pmk_cache; /* per authenticator data */ struct wpa_authenticator { struct wpa_group *group; unsigned int dot11RSNAStatsTKIPRemoteMICFailures; u32 dot11RSNAAuthenticationSuiteSelected; u32 dot11RSNAPairwiseCipherSelected; u32 dot11RSNAGroupCipherSelected; u8 dot11RSNAPMKIDUsed[PMKID_LEN]; u32 dot11RSNAAuthenticationSuiteRequested; /* FIX: update */ u32 dot11RSNAPairwiseCipherRequested; /* FIX: update */ u32 dot11RSNAGroupCipherRequested; /* FIX: update */ unsigned int dot11RSNATKIPCounterMeasuresInvoked; unsigned int dot11RSNA4WayHandshakeFailures; struct wpa_auth_config conf; const struct wpa_auth_callbacks *cb; void *cb_ctx; u8 *wpa_ie; size_t wpa_ie_len; u8 addr[ETH_ALEN]; struct rsn_pmksa_cache *pmksa; struct wpa_ft_pmk_cache *ft_pmk_cache; #ifdef CONFIG_P2P struct bitfield *ip_pool; #endif /* CONFIG_P2P */ }; #ifdef CONFIG_IEEE80211R_AP #define FT_REMOTE_SEQ_BACKLOG 16 struct ft_remote_seq_rx { u32 dom; struct os_reltime time_offset; /* local time - offset = remote time */ /* accepted sequence numbers: (offset ... offset + 0x40000000] * (except those in last) * dropped sequence numbers: (offset - 0x40000000 ... offset] * all others trigger SEQ_REQ message (except first message) */ u32 last[FT_REMOTE_SEQ_BACKLOG]; unsigned int num_last; u32 offsetidx; struct dl_list queue; /* send nonces + rrb msgs awaiting seq resp */ }; struct ft_remote_seq_tx { u32 dom; /* non zero if initialized */ u32 seq; }; struct ft_remote_seq { struct ft_remote_seq_rx rx; struct ft_remote_seq_tx tx; }; #endif /* CONFIG_IEEE80211R_AP */ int wpa_write_rsn_ie(struct wpa_auth_config *conf, u8 *buf, size_t len, const u8 *pmkid); void wpa_auth_logger(struct wpa_authenticator *wpa_auth, const u8 *addr, logger_level level, const char *txt); void wpa_auth_vlogger(struct wpa_authenticator *wpa_auth, const u8 *addr, logger_level level, const char *fmt, ...); void __wpa_send_eapol(struct wpa_authenticator *wpa_auth, struct wpa_state_machine *sm, int key_info, const u8 *key_rsc, const u8 *nonce, const u8 *kde, size_t kde_len, int keyidx, int encr, int force_version); int wpa_auth_for_each_sta(struct wpa_authenticator *wpa_auth, int (*cb)(struct wpa_state_machine *sm, void *ctx), void *cb_ctx); int wpa_auth_for_each_auth(struct wpa_authenticator *wpa_auth, int (*cb)(struct wpa_authenticator *a, void *ctx), void *cb_ctx); #ifdef CONFIG_IEEE80211R_AP int wpa_write_mdie(struct wpa_auth_config *conf, u8 *buf, size_t len); int wpa_write_ftie(struct wpa_auth_config *conf, const u8 *r0kh_id, size_t r0kh_id_len, const u8 *anonce, const u8 *snonce, u8 *buf, size_t len, const u8 *subelem, size_t subelem_len); int wpa_auth_derive_ptk_ft(struct wpa_state_machine *sm, const u8 *pmk, struct wpa_ptk *ptk); struct wpa_ft_pmk_cache * wpa_ft_pmk_cache_init(void); void wpa_ft_pmk_cache_deinit(struct wpa_ft_pmk_cache *cache); void wpa_ft_install_ptk(struct wpa_state_machine *sm); int wpa_ft_store_pmk_r0(struct wpa_authenticator *wpa_auth, const u8 *spa, const u8 *pmk_r0, const u8 *pmk_r0_name, int pairwise); #endif /* CONFIG_IEEE80211R_AP */ #endif /* WPA_AUTH_I_H */