| #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> |
| |
| struct vty; |
| struct gsm48_hdr; |
| |
| struct bsc_filter_reject_cause { |
| int lu_reject_cause; |
| int cm_reject_cause; |
| }; |
| |
| struct bsc_filter_barr_entry { |
| struct rb_node node; |
| |
| char *imsi; |
| int cm_reject_cause; |
| int lu_reject_cause; |
| }; |
| |
| enum bsc_filter_acc_ctr { |
| ACC_LIST_LOCAL_FILTER, |
| ACC_LIST_GLOBAL_FILTER, |
| }; |
| |
| struct bsc_msg_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_msg_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; |
| }; |
| |
| enum { |
| FLT_CON_TYPE_NONE, |
| FLT_CON_TYPE_LU, |
| FLT_CON_TYPE_CM_SERV_REQ, |
| FLT_CON_TYPE_PAG_RESP, |
| FLT_CON_TYPE_SSA, |
| FLT_CON_TYPE_LOCAL_REJECT, |
| FLT_CON_TYPE_OTHER, |
| }; |
| |
| |
| struct bsc_filter_state { |
| char *imsi; |
| int imsi_checked; |
| int con_type; |
| }; |
| |
| struct bsc_filter_request { |
| void *ctx; |
| struct rb_root *black_list; |
| struct llist_head *access_lists; |
| const char *local_lst_name; |
| const char *global_lst_name; |
| int bsc_nr; |
| }; |
| |
| |
| int bsc_filter_barr_adapt(void *ctx, struct rb_root *rbtree, const struct osmo_config_list *); |
| int bsc_filter_barr_find(struct rb_root *root, const char *imsi, int *cm, int *lu); |
| |
| /** |
| * Content filtering. |
| */ |
| int bsc_msg_filter_initial(struct gsm48_hdr *hdr, size_t size, |
| struct bsc_filter_request *req, |
| int *con_type, char **imsi, |
| struct bsc_filter_reject_cause *cause); |
| int bsc_msg_filter_data(struct gsm48_hdr *hdr, size_t size, |
| struct bsc_filter_request *req, |
| struct bsc_filter_state *state, |
| struct bsc_filter_reject_cause *cause); |
| |
| /* IMSI allow/deny handling */ |
| struct bsc_msg_acc_lst *bsc_msg_acc_lst_find(struct llist_head *lst, const char *name); |
| struct bsc_msg_acc_lst *bsc_msg_acc_lst_get(void *ctx, struct llist_head *lst, const char *name); |
| void bsc_msg_acc_lst_delete(struct bsc_msg_acc_lst *lst); |
| |
| struct bsc_msg_acc_lst_entry *bsc_msg_acc_lst_entry_create(struct bsc_msg_acc_lst *); |
| int bsc_msg_acc_lst_check_allow(struct bsc_msg_acc_lst *lst, const char *imsi); |
| |
| void bsc_msg_lst_vty_init(void *ctx, struct llist_head *lst, int node); |
| void bsc_msg_acc_lst_write(struct vty *vty, struct bsc_msg_acc_lst *lst); |