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#pragma once
#include <stdint.h>
#include <osmocom/core/linuxlist.h>
#include <openbsc/gsm_data.h>
/* VLR subscriber authentication state */
enum vlr_sub_auth_state {
/* subscriber needs to be autenticated */
VLR_SUB_AS_NEEDS_AUTH,
/* waiting for AuthInfo from HLR/AUC */
VLR_SUB_AS_NEEDS_AUTH_WAIT_AI,
/* waiting for response from subscriber */
VLR_SUB_AS_WAIT_RESP,
/* successfully authenticated */
VLR_SUB_AS_AUTHENTICATED,
/* subscriber needs re-sync */
VLR_SUB_AS_NEEDS_RESYMC,
/* waiting for AuthInfo with ReSync */
VLR_SUB_AS_NEEDS_AUTH_WAIT_SAI_RESYNC,
/* waiting for response from subscr, resync case */
VLR_SUB_AS_WAIT_RESP_RESYNC,
/* waiting for IMSI from subscriber */
VLR_SUB_AS_WAIT_ID_IMSI,
/* authentication has failed */
VLR_SUB_AS_AUTH_FAILED,
};
enum vlr_sub_lu_state {
VLR_SUB_LS_WAIT_PVLR, /* Waiting for ID from PVLR */
VLR_SUB_LS_WAIT_AUTH, /* Waiting for Authentication */
VLR_SUB_LS_WAIT_IMSI, /* Waiting for IMSI from MS */
VLR_SUB_LS_WAIT_HLR_UPD, /* Waiting for end of HLR update */
VLR_SUB_LS_WAIT_IMEI_TMSI,/* Waiting for IMEI, TMSI allocated */
VLR_SUB_LS_WAIT_IMEI, /* Waiting for IMEI, no TMSI allocated */
};
enum vlr_sub_security_context {
VLR_SEC_CTX_NONE,
VLR_SEC_CTX_GSM,
VLR_SEC_CTX_UMTS,
};
#define OSMO_LBUF_DECL(name, xlen) \
struct { \
uint8_t buf[xlen]; \
size_t len; \
} name
struct vlr_instance;
/* The VLR subscriber is the part of the GSM subscirber state in VLR (CS) or
* SGSN (PS), particularly while interacting with the HLR via GSUP */
struct vlr_subscriber {
struct llist_head list;
struct vlr_instance *vlr;
/* Data from HLR */
char imsi[GSM23003_IMSI_MAX_DIGITS+1]; /* 2.1.1.1 */
char msisdn[15+1]; /* 2.1.2 */
OSMO_LBUF_DECL(hlr, 16); /* 2.4.7 */
uint32_t periodic_lu_timer; /* 2.4.24 */
uint32_t age_indicator; /* 2.17.1 */
/* Authentication Data */
struct gsm_auth_tuple auth_tuples[5]; /* 2.3.1-2.3.4 */
enum vlr_sub_auth_state auth_state;
struct gsm_auth_tuple *last_tuple;
enum vlr_sub_security_context sec_ctx;
char name[GSM_NAME_LENGTH]; /* proprietary */
/* Data local to VLR is below */
uint32_t tmsi; /* 2.1.4 */
/* some redundancy in information below? */
struct cell_global_id cgi; /* 2.4.16 */
uint16_t lac; /* 2.4.2 */
char imeisv[GSM23003_IMEISV_NUM_DIGITS+1]; /* 2.2.3 */
char imei[GSM23003_IMEISV_NUM_DIGITS+1]; /* 2.1.9 */
bool imsi_detached_flag; /* 2.7.1 */
bool conf_by_radio_contact_ind; /* 2.7.4.1 */
bool sub_dataconf_by_hlr_ind; /* 2.7.4.2 */
bool loc_conf_in_hlr_ind; /* 2.7.4.3 */
bool dormant_ind; /* 2.7.8 */
bool cancel_loc_rx; /* 2.7.8A */
bool ms_not_reachable_flag; /* 2.10.2 (MNRF) */
/* PS (SGSN) specific parts */
struct {
struct llist_head pdp_list;
uint8_t rac;
uint8_t sac;
} ps;
/* VLR specific parts */
struct {
} cs;
};
struct vlr_ops {
int (*tx_auth_req)(struct vlr_subscriber *vsub,
struct gsm_auth_tuple *at);
int (*tx_auth_rej)(struct vlr_subscriber *vsub, uint8_t cause);
void (*subscr_update)(struct vlr_subscriber *vsub);
};
struct vlr_instance {
struct llist_head subscribers;
struct gprs_gsup_client *gsup_client;
struct vlr_ops ops;
};
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