/** * pmksa_cache_auth_add_entry - Add a PMKSA cache entry * @pmksa: Pointer to PMKSA cache data from pmksa_cache_auth_init() * @entry: Pointer to PMKSA cache entry * * This function adds PMKSA cache entry to the PMKSA cache. If an old entry is * already in the cache for the same Supplicant, this entry will be replaced * with the new entry. PMKID will be calculated based on the PMK. */ int pmksa_cache_auth_add_entry(struct rsn_pmksa_cache *pmksa, struct rsn_pmksa_cache_entry *entry) { struct rsn_pmksa_cache_entry *pos; if (entry == NULL) return -1; /* Replace an old entry for the same STA (if found) with the new entry */ pos = pmksa_cache_auth_get(pmksa, entry->spa, NULL); if (pos) pmksa_cache_free_entry(pmksa, pos); if (pmksa->pmksa_count >= pmksa_cache_max_entries && pmksa->pmksa) { /* Remove the oldest entry to make room for the new entry */ wpa_printf(MSG_DEBUG, "RSN: removed the oldest PMKSA cache " "entry (for " MACSTR ") to make room for new one", MAC2STR(pmksa->pmksa->spa)); pmksa_cache_free_entry(pmksa, pmksa->pmksa); } pmksa_cache_link_entry(pmksa, entry); return 0; }
/** * pmksa_cache_auth_add - Add a PMKSA cache entry * @pmksa: Pointer to PMKSA cache data from pmksa_cache_auth_init() * @pmk: The new pairwise master key * @pmk_len: PMK length in bytes, usually PMK_LEN (32) * @pmkid: Calculated PMKID * @kck: Key confirmation key or %NULL if not yet derived * @kck_len: KCK length in bytes * @aa: Authenticator address * @spa: Supplicant address * @session_timeout: Session timeout * @eapol: Pointer to EAPOL state machine data * @akmp: WPA_KEY_MGMT_* used in key derivation * Returns: Pointer to the added PMKSA cache entry or %NULL on error * * This function create a PMKSA entry for a new PMK and adds it to the PMKSA * cache. If an old entry is already in the cache for the same Supplicant, * this entry will be replaced with the new entry. PMKID will be calculated * based on the PMK. */ struct rsn_pmksa_cache_entry * pmksa_cache_auth_add(struct rsn_pmksa_cache *pmksa, const u8 *pmk, size_t pmk_len, const u8 *pmkid, const u8 *kck, size_t kck_len, const u8 *aa, const u8 *spa, int session_timeout, struct eapol_state_machine *eapol, int akmp) { struct rsn_pmksa_cache_entry *entry, *pos; struct os_reltime now; if (pmk_len > PMK_LEN_MAX) return NULL; if (wpa_key_mgmt_suite_b(akmp) && !kck) return NULL; entry = os_zalloc(sizeof(*entry)); if (entry == NULL) return NULL; os_memcpy(entry->pmk, pmk, pmk_len); entry->pmk_len = pmk_len; if (pmkid) os_memcpy(entry->pmkid, pmkid, PMKID_LEN); else if (akmp == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) rsn_pmkid_suite_b_192(kck, kck_len, aa, spa, entry->pmkid); else if (wpa_key_mgmt_suite_b(akmp)) rsn_pmkid_suite_b(kck, kck_len, aa, spa, entry->pmkid); else rsn_pmkid(pmk, pmk_len, aa, spa, entry->pmkid, wpa_key_mgmt_sha256(akmp)); os_get_reltime(&now); entry->expiration = now.sec; if (session_timeout > 0) entry->expiration += session_timeout; else entry->expiration += dot11RSNAConfigPMKLifetime; entry->akmp = akmp; os_memcpy(entry->spa, spa, ETH_ALEN); pmksa_cache_from_eapol_data(entry, eapol); /* Replace an old entry for the same STA (if found) with the new entry */ pos = pmksa_cache_auth_get(pmksa, spa, NULL); if (pos) pmksa_cache_free_entry(pmksa, pos); if (pmksa->pmksa_count >= pmksa_cache_max_entries && pmksa->pmksa) { /* Remove the oldest entry to make room for the new entry */ wpa_printf(MSG_DEBUG, "RSN: removed the oldest PMKSA cache " "entry (for " MACSTR ") to make room for new one", MAC2STR(pmksa->pmksa->spa)); pmksa_cache_free_entry(pmksa, pmksa->pmksa); } pmksa_cache_link_entry(pmksa, entry); return entry; }
struct rsn_pmksa_cache_entry * pmksa_cache_add_okc(struct rsn_pmksa_cache *pmksa, const struct rsn_pmksa_cache_entry *old_entry, const u8 *aa, const u8 *pmkid) { struct rsn_pmksa_cache_entry *entry; entry = os_zalloc(sizeof(*entry)); if (entry == NULL) return NULL; os_memcpy(entry->pmkid, pmkid, PMKID_LEN); os_memcpy(entry->pmk, old_entry->pmk, old_entry->pmk_len); entry->pmk_len = old_entry->pmk_len; entry->expiration = old_entry->expiration; entry->akmp = old_entry->akmp; os_memcpy(entry->spa, old_entry->spa, ETH_ALEN); entry->opportunistic = 1; if (old_entry->identity) { entry->identity = os_malloc(old_entry->identity_len); if (entry->identity) { entry->identity_len = old_entry->identity_len; os_memcpy(entry->identity, old_entry->identity, old_entry->identity_len); } } if (old_entry->cui) entry->cui = wpabuf_dup(old_entry->cui); #ifndef CONFIG_NO_RADIUS radius_copy_class(&entry->radius_class, &old_entry->radius_class); #endif /* CONFIG_NO_RADIUS */ entry->eap_type_authsrv = old_entry->eap_type_authsrv; if (old_entry->vlan_desc) { entry->vlan_desc = os_zalloc(sizeof(struct vlan_description)); if (entry->vlan_desc) *entry->vlan_desc = *old_entry->vlan_desc; } else { entry->vlan_desc = NULL; } entry->opportunistic = 1; pmksa_cache_link_entry(pmksa, entry); return entry; }