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      1 /*
      2  * hostapd - PMKSA cache for IEEE 802.11i RSN
      3  * Copyright (c) 2004-2008, 2012, Jouni Malinen <j (at) 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 PMKSA_CACHE_H
     10 #define PMKSA_CACHE_H
     11 
     12 #include "radius/radius.h"
     13 
     14 /**
     15  * struct rsn_pmksa_cache_entry - PMKSA cache entry
     16  */
     17 struct rsn_pmksa_cache_entry {
     18 	struct rsn_pmksa_cache_entry *next, *hnext;
     19 	u8 pmkid[PMKID_LEN];
     20 	u8 pmk[PMK_LEN_MAX];
     21 	size_t pmk_len;
     22 	os_time_t expiration;
     23 	int akmp; /* WPA_KEY_MGMT_* */
     24 	u8 spa[ETH_ALEN];
     25 
     26 	u8 *identity;
     27 	size_t identity_len;
     28 	struct wpabuf *cui;
     29 	struct radius_class_data radius_class;
     30 	u8 eap_type_authsrv;
     31 	struct vlan_description *vlan_desc;
     32 	int opportunistic;
     33 
     34 	u64 acct_multi_session_id;
     35 };
     36 
     37 struct rsn_pmksa_cache;
     38 
     39 struct rsn_pmksa_cache *
     40 pmksa_cache_auth_init(void (*free_cb)(struct rsn_pmksa_cache_entry *entry,
     41 				      void *ctx), void *ctx);
     42 void pmksa_cache_auth_deinit(struct rsn_pmksa_cache *pmksa);
     43 struct rsn_pmksa_cache_entry *
     44 pmksa_cache_auth_get(struct rsn_pmksa_cache *pmksa,
     45 		     const u8 *spa, const u8 *pmkid);
     46 struct rsn_pmksa_cache_entry * pmksa_cache_get_okc(
     47 	struct rsn_pmksa_cache *pmksa, const u8 *spa, const u8 *aa,
     48 	const u8 *pmkid);
     49 struct rsn_pmksa_cache_entry *
     50 pmksa_cache_auth_add(struct rsn_pmksa_cache *pmksa,
     51 		     const u8 *pmk, size_t pmk_len, const u8 *pmkid,
     52 		     const u8 *kck, size_t kck_len,
     53 		     const u8 *aa, const u8 *spa, int session_timeout,
     54 		     struct eapol_state_machine *eapol, int akmp);
     55 struct rsn_pmksa_cache_entry *
     56 pmksa_cache_auth_create_entry(const u8 *pmk, size_t pmk_len, const u8 *pmkid,
     57 			      const u8 *kck, size_t kck_len, const u8 *aa,
     58 			      const u8 *spa, int session_timeout,
     59 			      struct eapol_state_machine *eapol, int akmp);
     60 int pmksa_cache_auth_add_entry(struct rsn_pmksa_cache *pmksa,
     61 			       struct rsn_pmksa_cache_entry *entry);
     62 struct rsn_pmksa_cache_entry *
     63 pmksa_cache_add_okc(struct rsn_pmksa_cache *pmksa,
     64 		    const struct rsn_pmksa_cache_entry *old_entry,
     65 		    const u8 *aa, const u8 *pmkid);
     66 void pmksa_cache_to_eapol_data(struct hostapd_data *hapd,
     67 			       struct rsn_pmksa_cache_entry *entry,
     68 			       struct eapol_state_machine *eapol);
     69 void pmksa_cache_free_entry(struct rsn_pmksa_cache *pmksa,
     70 			    struct rsn_pmksa_cache_entry *entry);
     71 int pmksa_cache_auth_radius_das_disconnect(struct rsn_pmksa_cache *pmksa,
     72 					   struct radius_das_attrs *attr);
     73 int pmksa_cache_auth_list(struct rsn_pmksa_cache *pmksa, char *buf, size_t len);
     74 void pmksa_cache_auth_flush(struct rsn_pmksa_cache *pmksa);
     75 int pmksa_cache_auth_list_mesh(struct rsn_pmksa_cache *pmksa, const u8 *addr,
     76 			       char *buf, size_t len);
     77 
     78 #endif /* PMKSA_CACHE_H */
     79