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1 /*
2  * hostapd / EAP-SIM database/authenticator gateway
3  * Copyright (c) 2005-2008, 2012, 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 EAP_SIM_DB_H
10 #define EAP_SIM_DB_H
11 
12 #include "eap_common/eap_sim_common.h"
13 
14 /* Identity prefixes */
15 #define EAP_SIM_PERMANENT_PREFIX '1'
16 #define EAP_SIM_PSEUDONYM_PREFIX '3'
17 #define EAP_SIM_REAUTH_ID_PREFIX '5'
18 #define EAP_AKA_PERMANENT_PREFIX '0'
19 #define EAP_AKA_PSEUDONYM_PREFIX '2'
20 #define EAP_AKA_REAUTH_ID_PREFIX '4'
21 #define EAP_AKA_PRIME_PERMANENT_PREFIX '6'
22 #define EAP_AKA_PRIME_PSEUDONYM_PREFIX '7'
23 #define EAP_AKA_PRIME_REAUTH_ID_PREFIX '8'
24 
25 enum eap_sim_db_method {
26 	EAP_SIM_DB_SIM,
27 	EAP_SIM_DB_AKA,
28 	EAP_SIM_DB_AKA_PRIME
29 };
30 
31 struct eap_sim_db_data;
32 
33 struct eap_sim_db_data *
34 eap_sim_db_init(const char *config, unsigned int db_timeout,
35 		void (*get_complete_cb)(void *ctx, void *session_ctx),
36 		void *ctx);
37 
38 void eap_sim_db_deinit(void *priv);
39 
40 int eap_sim_db_get_gsm_triplets(struct eap_sim_db_data *data,
41 				const char *username, int max_chal,
42 				u8 *_rand, u8 *kc, u8 *sres,
43 				void *cb_session_ctx);
44 
45 #define EAP_SIM_DB_FAILURE -1
46 #define EAP_SIM_DB_PENDING -2
47 
48 char * eap_sim_db_get_next_pseudonym(struct eap_sim_db_data *data,
49 				     enum eap_sim_db_method method);
50 
51 char * eap_sim_db_get_next_reauth_id(struct eap_sim_db_data *data,
52 				     enum eap_sim_db_method method);
53 
54 int eap_sim_db_add_pseudonym(struct eap_sim_db_data *data,
55 			     const char *permanent, char *pseudonym);
56 
57 int eap_sim_db_add_reauth(struct eap_sim_db_data *data, const char *permanent,
58 			  char *reauth_id, u16 counter, const u8 *mk);
59 int eap_sim_db_add_reauth_prime(struct eap_sim_db_data *data,
60 				const char *permanent,
61 				char *reauth_id, u16 counter, const u8 *k_encr,
62 				const u8 *k_aut, const u8 *k_re);
63 
64 const char * eap_sim_db_get_permanent(struct eap_sim_db_data *data,
65 				      const char *pseudonym);
66 
67 struct eap_sim_reauth {
68 	struct eap_sim_reauth *next;
69 	char *permanent; /* Permanent username */
70 	char *reauth_id; /* Fast re-authentication username */
71 	u16 counter;
72 	u8 mk[EAP_SIM_MK_LEN];
73 	u8 k_encr[EAP_SIM_K_ENCR_LEN];
74 	u8 k_aut[EAP_AKA_PRIME_K_AUT_LEN];
75 	u8 k_re[EAP_AKA_PRIME_K_RE_LEN];
76 };
77 
78 struct eap_sim_reauth *
79 eap_sim_db_get_reauth_entry(struct eap_sim_db_data *data,
80 			    const char *reauth_id);
81 
82 void eap_sim_db_remove_reauth(struct eap_sim_db_data *data,
83 			      struct eap_sim_reauth *reauth);
84 
85 int eap_sim_db_get_aka_auth(struct eap_sim_db_data *data, const char *username,
86 			    u8 *_rand, u8 *autn, u8 *ik, u8 *ck,
87 			    u8 *res, size_t *res_len, void *cb_session_ctx);
88 
89 int eap_sim_db_resynchronize(struct eap_sim_db_data *data,
90 			     const char *username, const u8 *auts,
91 			     const u8 *_rand);
92 
93 char * sim_get_username(const u8 *identity, size_t identity_len);
94 
95 #endif /* EAP_SIM_DB_H */
96