| /* |
| * hostapd - IEEE 802.11i-2004 / WPA Authenticator: Internal definitions |
| * Copyright (c) 2004-2015, Jouni Malinen <j@w1.fi> |
| * |
| * 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]; |
| u16 auth_alg; |
| |
| 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; |
| |
| bool Init; |
| bool DeauthenticationRequest; |
| bool AuthenticationRequest; |
| bool ReAuthenticationRequest; |
| bool Disconnect; |
| u16 disconnect_reason; /* specific reason code to use with Disconnect */ |
| u32 TimeoutCtr; |
| u32 GTimeoutCtr; |
| bool TimeoutEvt; |
| bool EAPOLKeyReceived; |
| bool EAPOLKeyPairwise; |
| bool EAPOLKeyRequest; |
| bool MICVerified; |
| bool 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; |
| u8 keyidx_active; |
| bool use_ext_key_id; |
| bool PTK_valid; |
| bool pairwise_set; |
| bool tk_already_set; |
| int keycount; |
| bool Pair; |
| struct wpa_key_replay_counter { |
| u8 counter[WPA_REPLAY_COUNTER_LEN]; |
| bool valid; |
| } key_replay[RSNA_MAX_EAPOL_RETRIES], |
| prev_key_replay[RSNA_MAX_EAPOL_RETRIES]; |
| bool PInitAKeys; /* WPA only, not in IEEE 802.11i */ |
| bool PTKRequest; /* not in IEEE 802.11i state machine */ |
| bool has_GTK; |
| bool 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; |
| |
| #ifdef CONFIG_OCV |
| int ocv_enabled; |
| #endif /* CONFIG_OCV */ |
| |
| u8 req_replay_counter[WPA_REPLAY_COUNTER_LEN]; |
| int req_replay_counter_used; |
| |
| u8 *wpa_ie; |
| size_t wpa_ie_len; |
| u8 *rsnxe; |
| size_t rsnxe_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_MAX]; /* PSK or the second 256 bits of MSK, or the |
| * first 384 bits of MSK */ |
| size_t xxkey_len; |
| u8 pmk_r1[PMK_LEN_MAX]; |
| unsigned int pmk_r1_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_DPP2 |
| struct wpabuf *dpp_z; |
| #endif /* CONFIG_DPP2 */ |
| |
| #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; |
| |
| bool GInit; |
| int GKeyDoneStations; |
| bool GTKReKey; |
| int GTK_len; |
| int GN, GM; |
| bool 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]; |
| bool changed; |
| bool first_sta_seen; |
| bool reject_4way_hs_for_entropy; |
| u8 IGTK[2][WPA_IGTK_MAX_LEN]; |
| u8 BIGTK[2][WPA_IGTK_MAX_LEN]; |
| int GN_igtk, GM_igtk; |
| int GN_bigtk, GM_bigtk; |
| /* 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); |
| int wpa_write_rsnxe(struct wpa_auth_config *conf, u8 *buf, size_t len); |
| 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, ...) |
| PRINTF_FORMAT(4, 5); |
| 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, int use_sha384, |
| 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 rsnxe_used); |
| int wpa_auth_derive_ptk_ft(struct wpa_state_machine *sm, 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 retry); |
| int wpa_ft_store_pmk_fils(struct wpa_state_machine *sm, const u8 *pmk_r0, |
| const u8 *pmk_r0_name); |
| #endif /* CONFIG_IEEE80211R_AP */ |
| |
| #endif /* WPA_AUTH_I_H */ |
