108 lines
2.4 KiB
C
108 lines
2.4 KiB
C
#pragma once
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#include <osmocom/core/msgb.h>
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#include <osmocom/core/msgfile.h>
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#include <osmocom/core/linuxrbtree.h>
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#include <osmocom/core/linuxlist.h>
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#include <regex.h>
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struct vty;
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struct gsm48_hdr;
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struct bsc_filter_reject_cause {
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int lu_reject_cause;
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int cm_reject_cause;
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};
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struct bsc_filter_barr_entry {
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struct rb_node node;
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char *imsi;
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int cm_reject_cause;
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int lu_reject_cause;
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};
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enum bsc_filter_acc_ctr {
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ACC_LIST_LOCAL_FILTER,
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ACC_LIST_GLOBAL_FILTER,
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};
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struct bsc_msg_acc_lst {
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struct llist_head list;
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/* counter */
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struct rate_ctr_group *stats;
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/* the name of the list */
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const char *name;
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struct llist_head fltr_list;
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};
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struct bsc_msg_acc_lst_entry {
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struct llist_head list;
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/* the filter */
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char *imsi_allow;
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regex_t imsi_allow_re;
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char *imsi_deny;
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regex_t imsi_deny_re;
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/* reject reasons for the access lists */
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int cm_reject_cause;
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int lu_reject_cause;
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};
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enum {
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FLT_CON_TYPE_NONE,
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FLT_CON_TYPE_LU,
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FLT_CON_TYPE_CM_SERV_REQ,
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FLT_CON_TYPE_PAG_RESP,
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FLT_CON_TYPE_SSA,
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FLT_CON_TYPE_LOCAL_REJECT,
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FLT_CON_TYPE_OTHER,
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};
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struct bsc_filter_state {
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char *imsi;
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int imsi_checked;
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int con_type;
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};
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struct bsc_filter_request {
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void *ctx;
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struct rb_root *black_list;
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struct llist_head *access_lists;
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const char *local_lst_name;
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const char *global_lst_name;
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int bsc_nr;
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};
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int bsc_filter_barr_adapt(void *ctx, struct rb_root *rbtree, const struct osmo_config_list *);
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int bsc_filter_barr_find(struct rb_root *root, const char *imsi, int *cm, int *lu);
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/**
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* Content filtering.
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*/
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int bsc_msg_filter_initial(struct gsm48_hdr *hdr, size_t size,
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struct bsc_filter_request *req,
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int *con_type, char **imsi,
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struct bsc_filter_reject_cause *cause);
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int bsc_msg_filter_data(struct gsm48_hdr *hdr, size_t size,
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struct bsc_filter_request *req,
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struct bsc_filter_state *state,
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struct bsc_filter_reject_cause *cause);
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/* IMSI allow/deny handling */
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struct bsc_msg_acc_lst *bsc_msg_acc_lst_find(struct llist_head *lst, const char *name);
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struct bsc_msg_acc_lst *bsc_msg_acc_lst_get(void *ctx, struct llist_head *lst, const char *name);
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void bsc_msg_acc_lst_delete(struct bsc_msg_acc_lst *lst);
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struct bsc_msg_acc_lst_entry *bsc_msg_acc_lst_entry_create(struct bsc_msg_acc_lst *);
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int bsc_msg_acc_lst_check_allow(struct bsc_msg_acc_lst *lst, const char *imsi);
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void bsc_msg_lst_vty_init(void *ctx, struct llist_head *lst, int node);
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void bsc_msg_acc_lst_write(struct vty *vty, struct bsc_msg_acc_lst *lst);
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