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-rw-r--r--include/openbsc/bsc_nat.h123
1 files changed, 92 insertions, 31 deletions
diff --git a/include/openbsc/bsc_nat.h b/include/openbsc/bsc_nat.h
index f74cae2a8..97fa4fe2e 100644
--- a/include/openbsc/bsc_nat.h
+++ b/include/openbsc/bsc_nat.h
@@ -1,6 +1,6 @@
/*
- * (C) 2010 by Holger Hans Peter Freyther <zecke@selfish.org>
- * (C) 2010 by On-Waves
+ * (C) 2010-2011 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2010-2011 by On-Waves
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
@@ -23,22 +23,23 @@
#include "mgcp.h"
-#include <sys/types.h>
-#include <osmocore/select.h>
-#include <osmocore/msgb.h>
-#include <osmocore/msgfile.h>
-#include <osmocore/timer.h>
-#include <osmocore/write_queue.h>
-#include <osmocore/rate_ctr.h>
-#include <osmocore/statistics.h>
-#include <osmocore/protocol/gsm_04_08.h>
+#include <osmocom/core/select.h>
+#include <osmocom/core/msgb.h>
+#include <osmocom/core/msgfile.h>
+#include <osmocom/core/timer.h>
+#include <osmocom/core/write_queue.h>
+#include <osmocom/core/rate_ctr.h>
+#include <osmocom/core/statistics.h>
+#include <osmocom/gsm/protocol/gsm_04_08.h>
#include <regex.h>
#define DIR_BSC 1
#define DIR_MSC 2
+#define PAGIN_GROUP_UNASSIGNED -1
+
struct sccp_source_reference;
struct sccp_connections;
struct bsc_nat_parsed;
@@ -56,6 +57,16 @@ enum {
};
/*
+ * Is this terminated to the MSC, to the local machine (release
+ * handling for IMSI filtering) or to a USSD provider?
+ */
+enum {
+ NAT_CON_END_MSC,
+ NAT_CON_END_LOCAL,
+ NAT_CON_END_USSD,
+};
+
+/*
* Per BSC data structure
*/
struct bsc_connection {
@@ -65,17 +76,17 @@ struct bsc_connection {
int authenticated;
/* the fd we use to communicate */
- struct write_queue write_queue;
+ struct osmo_wqueue write_queue;
/* the BSS associated */
struct bsc_config *cfg;
/* a timeout node */
- struct timer_list id_timeout;
+ struct osmo_timer_list id_timeout;
/* pong timeout */
- struct timer_list ping_timeout;
- struct timer_list pong_timeout;
+ struct osmo_timer_list ping_timeout;
+ struct osmo_timer_list pong_timeout;
/* mgcp related code */
char *_endpoint_status;
@@ -125,6 +136,7 @@ struct bsc_config {
char *acc_lst_name;
int forbid_paging;
+ int paging_group;
/* audio handling */
int max_endpoints;
@@ -142,6 +154,14 @@ struct bsc_lac_entry {
uint16_t lac;
};
+struct bsc_nat_paging_group {
+ struct llist_head entry;
+
+ /* list of lac entries */
+ struct llist_head lists;
+ int nr;
+};
+
/**
* BSCs point of view of endpoints
*/
@@ -159,21 +179,21 @@ struct bsc_endpoint {
*/
struct bsc_nat_statistics {
struct {
- struct counter *conn;
- struct counter *calls;
+ struct osmo_counter *conn;
+ struct osmo_counter *calls;
} sccp;
struct {
- struct counter *reconn;
- struct counter *auth_fail;
+ struct osmo_counter *reconn;
+ struct osmo_counter *auth_fail;
} bsc;
struct {
- struct counter *reconn;
+ struct osmo_counter *reconn;
} msc;
struct {
- struct counter *reconn;
+ struct osmo_counter *reconn;
} ussd;
};
@@ -216,6 +236,9 @@ struct bsc_nat {
/* access lists */
struct llist_head access_lists;
+ /* paging groups */
+ struct llist_head paging_groups;
+
/* known BSC's */
struct llist_head bsc_configs;
int num_bsc;
@@ -227,8 +250,8 @@ struct bsc_nat {
int mgcp_length;
/* msc things */
- char *msc_ip;
- int msc_port;
+ struct llist_head dests;
+ struct bsc_msc_dest *main_dest;
struct bsc_msc_connection *msc_con;
char *token;
@@ -244,20 +267,37 @@ struct bsc_nat {
/* number rewriting */
char *num_rewr_name;
- struct msg_entries *num_rewr;
+ struct llist_head num_rewr;
+
+ char *smsc_rewr_name;
+ struct llist_head smsc_rewr;
+ char *tpdest_match_name;
+ struct llist_head tpdest_match;
/* USSD messages we want to match */
char *ussd_lst_name;
char *ussd_query;
+ regex_t ussd_query_re;
char *ussd_token;
char *ussd_local;
- struct bsc_fd ussd_listen;
+ struct osmo_fd ussd_listen;
struct bsc_nat_ussd_con *ussd_con;
+ /* for maintainenance */
+ int blocked;
+
/* statistics */
struct bsc_nat_statistics stats;
};
+struct bsc_nat_ussd_con {
+ struct osmo_wqueue queue;
+ struct bsc_nat *nat;
+ int authorized;
+
+ struct osmo_timer_list auth_timeout;
+};
+
/* create and init the structures */
struct bsc_config *bsc_config_alloc(struct bsc_nat *nat, const char *token);
struct bsc_config *bsc_config_num(struct bsc_nat *nat, int num);
@@ -285,7 +325,7 @@ struct bsc_nat_parsed *bsc_nat_parse(struct msgb *msg);
*/
int bsc_nat_filter_ipa(int direction, struct msgb *msg, struct bsc_nat_parsed *parsed);
int bsc_nat_vty_init(struct bsc_nat *nat);
-struct bsc_connection *bsc_nat_find_bsc(struct bsc_nat *nat, struct msgb *msg, int *_lac);
+int bsc_nat_find_paging(struct msgb *msg, const uint8_t **,int *len);
/**
* Content filtering.
@@ -326,12 +366,12 @@ uint32_t bsc_mgcp_extract_ci(const char *resp);
int bsc_write(struct bsc_connection *bsc, struct msgb *msg, int id);
-int bsc_do_write(struct write_queue *queue, struct msgb *msg, int id);
-int bsc_write_msg(struct write_queue *queue, struct msgb *msg);
-int bsc_write_cb(struct bsc_fd *bfd, struct msgb *msg);
+int bsc_do_write(struct osmo_wqueue *queue, struct msgb *msg, int id);
+int bsc_write_msg(struct osmo_wqueue *queue, struct msgb *msg);
+int bsc_write_cb(struct osmo_fd *bfd, struct msgb *msg);
/* IMSI allow/deny handling */
-void bsc_parse_reg(void *ctx, regex_t *reg, char **imsi, int argc, const char **argv);
+int bsc_parse_reg(void *ctx, regex_t *reg, char **imsi, int argc, const char **argv) __attribute__ ((warn_unused_result));
struct bsc_nat_acc_lst *bsc_nat_acc_lst_find(struct bsc_nat *nat, const char *name);
struct bsc_nat_acc_lst *bsc_nat_acc_lst_get(struct bsc_nat *nat, const char *name);
void bsc_nat_acc_lst_delete(struct bsc_nat_acc_lst *lst);
@@ -350,6 +390,27 @@ int bsc_ussd_init(struct bsc_nat *nat);
int bsc_check_ussd(struct sccp_connections *con, struct bsc_nat_parsed *parsed, struct msgb *msg);
int bsc_close_ussd_connections(struct bsc_nat *nat);
-struct msgb *bsc_nat_rewrite_setup(struct bsc_nat *nat, struct msgb *msg, struct bsc_nat_parsed *, const char *imsi);
+struct msgb *bsc_nat_rewrite_msg(struct bsc_nat *nat, struct msgb *msg, struct bsc_nat_parsed *, const char *imsi);
+
+/** paging group handling */
+struct bsc_nat_paging_group *bsc_nat_paging_group_num(struct bsc_nat *nat, int group);
+struct bsc_nat_paging_group *bsc_nat_paging_group_create(struct bsc_nat *nat, int group);
+void bsc_nat_paging_group_delete(struct bsc_nat_paging_group *);
+void bsc_nat_paging_group_add_lac(struct bsc_nat_paging_group *grp, int lac);
+void bsc_nat_paging_group_del_lac(struct bsc_nat_paging_group *grp, int lac);
+
+/**
+ * Number rewriting support below
+ */
+struct bsc_nat_num_rewr_entry {
+ struct llist_head list;
+
+ regex_t msisdn_reg;
+ regex_t num_reg;
+
+ char *replace;
+};
+
+void bsc_nat_num_rewr_entry_adapt(void *ctx, struct llist_head *head, const struct osmo_config_list *);
#endif