move openbsc/* to repos root

This is the first step in creating this repository from the legacy openbsc.git.

Like all other Osmocom repositories, keep the autoconf and automake files in
the repository root. openbsc.git has been the sole exception, which ends now.

Change-Id: I9c6f2a448d9cb1cc088cf1cf6918b69d7e69b4e7

1 files changed, 107 insertions, 0 deletions

diff --git a/include/openbsc/bsc_msg_filter.h b/include/openbsc/bsc_msg_filter.h
new file mode 100644
index 000000000..a9dedf43c
--- /dev/null
+++ b/include/openbsc/bsc_msg_filter.h
@@ -0,0 +1,107 @@
+#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);