wpa_auth.h revision c5ec7f57ead87efa365800228aa0b09a12d9e6c4
1/* 2 * hostapd - IEEE 802.11i-2004 / WPA Authenticator 3 * Copyright (c) 2004-2007, Jouni Malinen <j@w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9#ifndef WPA_AUTH_H 10#define WPA_AUTH_H 11 12#include "common/defs.h" 13#include "common/eapol_common.h" 14#include "common/wpa_common.h" 15 16#ifdef _MSC_VER 17#pragma pack(push, 1) 18#endif /* _MSC_VER */ 19 20/* IEEE Std 802.11r-2008, 11A.10.3 - Remote request/response frame definition 21 */ 22struct ft_rrb_frame { 23 u8 frame_type; /* RSN_REMOTE_FRAME_TYPE_FT_RRB */ 24 u8 packet_type; /* FT_PACKET_REQUEST/FT_PACKET_RESPONSE */ 25 le16 action_length; /* little endian length of action_frame */ 26 u8 ap_address[ETH_ALEN]; 27 /* 28 * Followed by action_length bytes of FT Action frame (from Category 29 * field to the end of Action Frame body. 30 */ 31} STRUCT_PACKED; 32 33#define RSN_REMOTE_FRAME_TYPE_FT_RRB 1 34 35#define FT_PACKET_REQUEST 0 36#define FT_PACKET_RESPONSE 1 37/* Vendor-specific types for R0KH-R1KH protocol; not defined in 802.11r */ 38#define FT_PACKET_R0KH_R1KH_PULL 200 39#define FT_PACKET_R0KH_R1KH_RESP 201 40#define FT_PACKET_R0KH_R1KH_PUSH 202 41 42#define FT_R0KH_R1KH_PULL_DATA_LEN 44 43#define FT_R0KH_R1KH_RESP_DATA_LEN 76 44#define FT_R0KH_R1KH_PUSH_DATA_LEN 88 45 46struct ft_r0kh_r1kh_pull_frame { 47 u8 frame_type; /* RSN_REMOTE_FRAME_TYPE_FT_RRB */ 48 u8 packet_type; /* FT_PACKET_R0KH_R1KH_PULL */ 49 le16 data_length; /* little endian length of data (44) */ 50 u8 ap_address[ETH_ALEN]; 51 52 u8 nonce[16]; 53 u8 pmk_r0_name[WPA_PMK_NAME_LEN]; 54 u8 r1kh_id[FT_R1KH_ID_LEN]; 55 u8 s1kh_id[ETH_ALEN]; 56 u8 pad[4]; /* 8-octet boundary for AES key wrap */ 57 u8 key_wrap_extra[8]; 58} STRUCT_PACKED; 59 60struct ft_r0kh_r1kh_resp_frame { 61 u8 frame_type; /* RSN_REMOTE_FRAME_TYPE_FT_RRB */ 62 u8 packet_type; /* FT_PACKET_R0KH_R1KH_RESP */ 63 le16 data_length; /* little endian length of data (76) */ 64 u8 ap_address[ETH_ALEN]; 65 66 u8 nonce[16]; /* copied from pull */ 67 u8 r1kh_id[FT_R1KH_ID_LEN]; /* copied from pull */ 68 u8 s1kh_id[ETH_ALEN]; /* copied from pull */ 69 u8 pmk_r1[PMK_LEN]; 70 u8 pmk_r1_name[WPA_PMK_NAME_LEN]; 71 le16 pairwise; 72 u8 pad[2]; /* 8-octet boundary for AES key wrap */ 73 u8 key_wrap_extra[8]; 74} STRUCT_PACKED; 75 76struct ft_r0kh_r1kh_push_frame { 77 u8 frame_type; /* RSN_REMOTE_FRAME_TYPE_FT_RRB */ 78 u8 packet_type; /* FT_PACKET_R0KH_R1KH_PUSH */ 79 le16 data_length; /* little endian length of data (88) */ 80 u8 ap_address[ETH_ALEN]; 81 82 /* Encrypted with AES key-wrap */ 83 u8 timestamp[4]; /* current time in seconds since unix epoch, little 84 * endian */ 85 u8 r1kh_id[FT_R1KH_ID_LEN]; 86 u8 s1kh_id[ETH_ALEN]; 87 u8 pmk_r0_name[WPA_PMK_NAME_LEN]; 88 u8 pmk_r1[PMK_LEN]; 89 u8 pmk_r1_name[WPA_PMK_NAME_LEN]; 90 le16 pairwise; 91 u8 pad[6]; /* 8-octet boundary for AES key wrap */ 92 u8 key_wrap_extra[8]; 93} STRUCT_PACKED; 94 95#ifdef _MSC_VER 96#pragma pack(pop) 97#endif /* _MSC_VER */ 98 99 100/* per STA state machine data */ 101 102struct wpa_authenticator; 103struct wpa_state_machine; 104struct rsn_pmksa_cache_entry; 105struct eapol_state_machine; 106 107 108struct ft_remote_r0kh { 109 struct ft_remote_r0kh *next; 110 u8 addr[ETH_ALEN]; 111 u8 id[FT_R0KH_ID_MAX_LEN]; 112 size_t id_len; 113 u8 key[16]; 114}; 115 116 117struct ft_remote_r1kh { 118 struct ft_remote_r1kh *next; 119 u8 addr[ETH_ALEN]; 120 u8 id[FT_R1KH_ID_LEN]; 121 u8 key[16]; 122}; 123 124 125struct wpa_auth_config { 126 int wpa; 127 int wpa_key_mgmt; 128 int wpa_pairwise; 129 int wpa_group; 130 int wpa_group_rekey; 131 int wpa_strict_rekey; 132 int wpa_gmk_rekey; 133 int wpa_ptk_rekey; 134 int rsn_pairwise; 135 int rsn_preauth; 136 int eapol_version; 137 int peerkey; 138 int wmm_enabled; 139 int wmm_uapsd; 140 int disable_pmksa_caching; 141 int okc; 142 int tx_status; 143#ifdef CONFIG_IEEE80211W 144 enum mfp_options ieee80211w; 145#endif /* CONFIG_IEEE80211W */ 146#ifdef CONFIG_IEEE80211R 147#define SSID_LEN 32 148 u8 ssid[SSID_LEN]; 149 size_t ssid_len; 150 u8 mobility_domain[MOBILITY_DOMAIN_ID_LEN]; 151 u8 r0_key_holder[FT_R0KH_ID_MAX_LEN]; 152 size_t r0_key_holder_len; 153 u8 r1_key_holder[FT_R1KH_ID_LEN]; 154 u32 r0_key_lifetime; 155 u32 reassociation_deadline; 156 struct ft_remote_r0kh *r0kh_list; 157 struct ft_remote_r1kh *r1kh_list; 158 int pmk_r1_push; 159 int ft_over_ds; 160#endif /* CONFIG_IEEE80211R */ 161}; 162 163typedef enum { 164 LOGGER_DEBUG, LOGGER_INFO, LOGGER_WARNING 165} logger_level; 166 167typedef enum { 168 WPA_EAPOL_portEnabled, WPA_EAPOL_portValid, WPA_EAPOL_authorized, 169 WPA_EAPOL_portControl_Auto, WPA_EAPOL_keyRun, WPA_EAPOL_keyAvailable, 170 WPA_EAPOL_keyDone, WPA_EAPOL_inc_EapolFramesTx 171} wpa_eapol_variable; 172 173struct wpa_auth_callbacks { 174 void *ctx; 175 void (*logger)(void *ctx, const u8 *addr, logger_level level, 176 const char *txt); 177 void (*disconnect)(void *ctx, const u8 *addr, u16 reason); 178 void (*mic_failure_report)(void *ctx, const u8 *addr); 179 void (*set_eapol)(void *ctx, const u8 *addr, wpa_eapol_variable var, 180 int value); 181 int (*get_eapol)(void *ctx, const u8 *addr, wpa_eapol_variable var); 182 const u8 * (*get_psk)(void *ctx, const u8 *addr, const u8 *prev_psk); 183 int (*get_msk)(void *ctx, const u8 *addr, u8 *msk, size_t *len); 184 int (*set_key)(void *ctx, int vlan_id, enum wpa_alg alg, 185 const u8 *addr, int idx, u8 *key, size_t key_len); 186 int (*get_seqnum)(void *ctx, const u8 *addr, int idx, u8 *seq); 187 int (*send_eapol)(void *ctx, const u8 *addr, const u8 *data, 188 size_t data_len, int encrypt); 189 int (*for_each_sta)(void *ctx, int (*cb)(struct wpa_state_machine *sm, 190 void *ctx), void *cb_ctx); 191 int (*for_each_auth)(void *ctx, int (*cb)(struct wpa_authenticator *a, 192 void *ctx), void *cb_ctx); 193 int (*send_ether)(void *ctx, const u8 *dst, u16 proto, const u8 *data, 194 size_t data_len); 195#ifdef CONFIG_IEEE80211R 196 struct wpa_state_machine * (*add_sta)(void *ctx, const u8 *sta_addr); 197 int (*send_ft_action)(void *ctx, const u8 *dst, 198 const u8 *data, size_t data_len); 199#endif /* CONFIG_IEEE80211R */ 200}; 201 202struct wpa_authenticator * wpa_init(const u8 *addr, 203 struct wpa_auth_config *conf, 204 struct wpa_auth_callbacks *cb); 205int wpa_init_keys(struct wpa_authenticator *wpa_auth); 206void wpa_deinit(struct wpa_authenticator *wpa_auth); 207int wpa_reconfig(struct wpa_authenticator *wpa_auth, 208 struct wpa_auth_config *conf); 209 210enum { 211 WPA_IE_OK, WPA_INVALID_IE, WPA_INVALID_GROUP, WPA_INVALID_PAIRWISE, 212 WPA_INVALID_AKMP, WPA_NOT_ENABLED, WPA_ALLOC_FAIL, 213 WPA_MGMT_FRAME_PROTECTION_VIOLATION, WPA_INVALID_MGMT_GROUP_CIPHER, 214 WPA_INVALID_MDIE, WPA_INVALID_PROTO 215}; 216 217int wpa_validate_wpa_ie(struct wpa_authenticator *wpa_auth, 218 struct wpa_state_machine *sm, 219 const u8 *wpa_ie, size_t wpa_ie_len, 220 const u8 *mdie, size_t mdie_len); 221int wpa_auth_uses_mfp(struct wpa_state_machine *sm); 222struct wpa_state_machine * 223wpa_auth_sta_init(struct wpa_authenticator *wpa_auth, const u8 *addr); 224int wpa_auth_sta_associated(struct wpa_authenticator *wpa_auth, 225 struct wpa_state_machine *sm); 226void wpa_auth_sta_no_wpa(struct wpa_state_machine *sm); 227void wpa_auth_sta_deinit(struct wpa_state_machine *sm); 228void wpa_receive(struct wpa_authenticator *wpa_auth, 229 struct wpa_state_machine *sm, 230 u8 *data, size_t data_len); 231typedef enum { 232 WPA_AUTH, WPA_ASSOC, WPA_DISASSOC, WPA_DEAUTH, WPA_REAUTH, 233 WPA_REAUTH_EAPOL, WPA_ASSOC_FT 234} wpa_event; 235void wpa_remove_ptk(struct wpa_state_machine *sm); 236int wpa_auth_sm_event(struct wpa_state_machine *sm, wpa_event event); 237void wpa_auth_sm_notify(struct wpa_state_machine *sm); 238void wpa_gtk_rekey(struct wpa_authenticator *wpa_auth); 239int wpa_get_mib(struct wpa_authenticator *wpa_auth, char *buf, size_t buflen); 240int wpa_get_mib_sta(struct wpa_state_machine *sm, char *buf, size_t buflen); 241void wpa_auth_countermeasures_start(struct wpa_authenticator *wpa_auth); 242int wpa_auth_pairwise_set(struct wpa_state_machine *sm); 243int wpa_auth_get_pairwise(struct wpa_state_machine *sm); 244int wpa_auth_sta_key_mgmt(struct wpa_state_machine *sm); 245int wpa_auth_sta_wpa_version(struct wpa_state_machine *sm); 246int wpa_auth_sta_clear_pmksa(struct wpa_state_machine *sm, 247 struct rsn_pmksa_cache_entry *entry); 248struct rsn_pmksa_cache_entry * 249wpa_auth_sta_get_pmksa(struct wpa_state_machine *sm); 250void wpa_auth_sta_local_mic_failure_report(struct wpa_state_machine *sm); 251const u8 * wpa_auth_get_wpa_ie(struct wpa_authenticator *wpa_auth, 252 size_t *len); 253int wpa_auth_pmksa_add(struct wpa_state_machine *sm, const u8 *pmk, 254 int session_timeout, struct eapol_state_machine *eapol); 255int wpa_auth_pmksa_add_preauth(struct wpa_authenticator *wpa_auth, 256 const u8 *pmk, size_t len, const u8 *sta_addr, 257 int session_timeout, 258 struct eapol_state_machine *eapol); 259int wpa_auth_sta_set_vlan(struct wpa_state_machine *sm, int vlan_id); 260void wpa_auth_eapol_key_tx_status(struct wpa_authenticator *wpa_auth, 261 struct wpa_state_machine *sm, int ack); 262 263#ifdef CONFIG_IEEE80211R 264u8 * wpa_sm_write_assoc_resp_ies(struct wpa_state_machine *sm, u8 *pos, 265 size_t max_len, int auth_alg, 266 const u8 *req_ies, size_t req_ies_len); 267void wpa_ft_process_auth(struct wpa_state_machine *sm, const u8 *bssid, 268 u16 auth_transaction, const u8 *ies, size_t ies_len, 269 void (*cb)(void *ctx, const u8 *dst, const u8 *bssid, 270 u16 auth_transaction, u16 resp, 271 const u8 *ies, size_t ies_len), 272 void *ctx); 273u16 wpa_ft_validate_reassoc(struct wpa_state_machine *sm, const u8 *ies, 274 size_t ies_len); 275int wpa_ft_action_rx(struct wpa_state_machine *sm, const u8 *data, size_t len); 276int wpa_ft_rrb_rx(struct wpa_authenticator *wpa_auth, const u8 *src_addr, 277 const u8 *data, size_t data_len); 278void wpa_ft_push_pmk_r1(struct wpa_authenticator *wpa_auth, const u8 *addr); 279#endif /* CONFIG_IEEE80211R */ 280 281#endif /* WPA_AUTH_H */ 282