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#pragma once
#include <osmocom/core/msgb.h>
#include <osmocom/core/msgfile.h>
#include <osmocom/core/linuxrbtree.h>
#include <osmocom/core/linuxlist.h>
#include <regex.h>
/* TODO: remove */
struct bsc_nat_parsed;
struct bsc_connection;
struct nat_sccp_connection;
struct bsc_nat_reject_cause {
int lu_reject_cause;
int cm_reject_cause;
};
struct bsc_nat_barr_entry {
struct rb_node node;
char *imsi;
int cm_reject_cause;
int lu_reject_cause;
};
enum bsc_nat_acc_ctr {
ACC_LIST_BSC_FILTER,
ACC_LIST_NAT_FILTER,
};
struct bsc_nat_acc_lst {
struct llist_head list;
/* counter */
struct rate_ctr_group *stats;
/* the name of the list */
const char *name;
struct llist_head fltr_list;
};
struct bsc_nat_acc_lst_entry {
struct llist_head list;
/* the filter */
char *imsi_allow;
regex_t imsi_allow_re;
char *imsi_deny;
regex_t imsi_deny_re;
/* reject reasons for the access lists */
int cm_reject_cause;
int lu_reject_cause;
};
int bsc_nat_barr_adapt(void *ctx, struct rb_root *rbtree, const struct osmo_config_list *);
int bsc_nat_barr_find(struct rb_root *root, const char *imsi, int *cm, int *lu);
/**
* Content filtering.
*/
int bsc_nat_filter_sccp_cr(struct bsc_connection *bsc, struct msgb *msg,
struct bsc_nat_parsed *, int *con_type, char **imsi,
struct bsc_nat_reject_cause *cause);
int bsc_nat_filter_dt(struct bsc_connection *bsc, struct msgb *msg,
struct nat_sccp_connection *con, struct bsc_nat_parsed *parsed,
struct bsc_nat_reject_cause *cause);
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