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76328bdc91
Add mslookup client to find remote home HLRs of unknown IMSIs, and proxy/forward GSUP for those to the right remote HLR instances. Add remote_hlr.c to manage one GSUP client per remote HLR GSUP address. Add proxy.c to keep state about remotely handled IMSIs (remote GSUP address, MSISDN, and probably more in future patches). The mslookup_server that determines whether a given MSISDN is attached locally now also needs to look in the proxy record: it is always the osmo-hlr immediately peering for the MSC that should respond to mslookup service address queries like SIP and SMPP. (Only gsup.hlr service is always answered by the home HLR.) Add dgsm.c to set up an mdns mslookup client, ask for IMSI homes, and to decide which GSUP is handled locally and which needs to go to a remote HLR. Add full VTY config and VTY tests. For a detailed overview of the D-GSM and mslookup related files, please see the elaborate comment at the top of mslookup.c (already added in an earlier patch). Change-Id: I2fe453553c90e6ee527ed13a13089900efd488aa
122 lines
3.4 KiB
C
122 lines
3.4 KiB
C
/* OsmoHLR generic header */
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/* (C) 2017 sysmocom s.f.m.c. GmbH <info@sysmocom.de>
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* All Rights Reserved
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*
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* Author: Max Suraev <msuraev@sysmocom.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#pragma once
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#include <stdbool.h>
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#include <osmocom/core/linuxlist.h>
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#include <osmocom/gsm/ipa.h>
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#include <osmocom/core/tdef.h>
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#include <osmocom/core/sockaddr_str.h>
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#include <osmocom/hlr/dgsm.h>
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#define HLR_DEFAULT_DB_FILE_PATH "hlr.db"
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struct hlr_euse;
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struct osmo_gsup_conn;
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enum osmo_gsup_message_type;
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extern struct osmo_tdef g_hlr_tdefs[];
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struct hlr {
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/* GSUP server pointer */
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struct osmo_gsup_server *gs;
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/* DB context */
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char *db_file_path;
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struct db_context *dbc;
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/* Control Interface */
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struct ctrl_handle *ctrl;
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const char *ctrl_bind_addr;
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/* Local bind addr */
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char *gsup_bind_addr;
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struct ipaccess_unit gsup_unit_name;
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struct llist_head euse_list;
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struct hlr_euse *euse_default;
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/* NCSS (call independent) session guard timeout value */
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int ncss_guard_timeout;
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struct llist_head ussd_routes;
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struct llist_head ss_sessions;
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bool store_imei;
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bool subscr_create_on_demand;
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/* Bitmask of DB_SUBSCR_FLAG_* */
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uint8_t subscr_create_on_demand_flags;
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unsigned int subscr_create_on_demand_rand_msisdn_len;
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struct {
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bool allow_startup;
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struct {
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/* Whether the mslookup server should be active in general (all lookup methods) */
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bool enable;
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uint32_t local_attach_max_age;
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struct llist_head local_site_services;
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struct {
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/* Whether the mDNS method of the mslookup server should be active. */
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bool enable;
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/* The mDNS bind address and domain suffix as set by the VTY, not necessarily in use. */
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struct osmo_sockaddr_str bind_addr;
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char *domain_suffix;
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struct osmo_mslookup_server_mdns *running;
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} mdns;
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} server;
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/* The mslookup client in osmo-hlr is used to find out which remote HLRs service a locally unknown IMSI.
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* (It may also be used to resolve recipients for SMS-over-GSUP in the future.) */
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struct {
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/* Whether to proxy/forward to remote HLRs */
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bool enable;
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/* If this is set, all GSUP for unknown IMSIs is forwarded directly to this GSUP address,
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* unconditionally. */
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struct osmo_sockaddr_str gsup_gateway_proxy;
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/* mslookup client request handling */
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unsigned int result_timeout_milliseconds;
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struct osmo_mslookup_client *client;
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struct {
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/* Whether to use mDNS for IMSI MS Lookup */
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bool enable;
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struct osmo_sockaddr_str query_addr;
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char *domain_suffix;
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struct osmo_mslookup_client_method *running;
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} mdns;
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} client;
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} mslookup;
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};
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extern struct hlr *g_hlr;
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struct hlr_subscriber;
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void osmo_hlr_subscriber_update_notify(struct hlr_subscriber *subscr);
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int hlr_subscr_nam(struct hlr *hlr, struct hlr_subscriber *subscr, bool nam_val, bool is_ps);
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