filter: Move the method definition to the filter module
Move the filter methods to the filter module. This is
still only usable for the NAT and the _dt/_cr filter
routines need to move back to the bsc_nat in the long
run.
diff --git a/openbsc/include/openbsc/bsc_msg_filter.h b/openbsc/include/openbsc/bsc_msg_filter.h
new file mode 100644
index 0000000..d9b3f6b
--- /dev/null
+++ b/openbsc/include/openbsc/bsc_msg_filter.h
@@ -0,0 +1,71 @@
+#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);
+