/* MS authorization and subscriber data handling */
#pragma once

#include <osmocom/core/linuxlist.h>

struct sgsn_config;
struct sgsn_instance;
struct sgsn_mm_ctx;
struct gsm_auth_tuple;

/* Authorization/ACL handling */
enum sgsn_auth_state {
	SGSN_AUTH_UNKNOWN,
	SGSN_AUTH_AUTHENTICATE,
	SGSN_AUTH_UMTS_RESYNC,
	SGSN_AUTH_ACCEPTED,
	SGSN_AUTH_REJECTED
};

extern const struct value_string *sgsn_auth_state_names;

void sgsn_auth_init(struct sgsn_instance *sgsn);
/* Request authorization */
enum sgsn_auth_state sgsn_auth_state(struct sgsn_mm_ctx *mm);
int sgsn_auth_request(struct sgsn_mm_ctx *mm);
void sgsn_auth_update(struct sgsn_mm_ctx *mm);
struct gsm_auth_tuple *sgsn_auth_get_tuple(struct sgsn_mm_ctx *mmctx,
					   unsigned key_seq);

/*
 * Authorization/ACL handling
 */
struct imsi_acl_entry {
	struct llist_head list;
	char imsi[OSMO_IMSI_BUF_SIZE];
};
struct imsi_acl_entry *sgsn_acl_lookup(const char *imsi, const struct sgsn_config *cfg);
int sgsn_acl_add(const char *imsi, struct sgsn_config *cfg);
int sgsn_acl_del(const char *imsi, struct sgsn_config *cfg);