Neels Hofmeyr | 647c106 | 2019-11-20 03:35:37 +0100 | [diff] [blame] | 1 | /* Copyright 2019 by sysmocom s.f.m.c. GmbH <info@sysmocom.de> |
| 2 | * |
| 3 | * All Rights Reserved |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU Affero General Public License as published by |
| 7 | * the Free Software Foundation; either version 3 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU Affero General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU Affero General Public License |
| 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 | * |
| 18 | */ |
| 19 | |
| 20 | #pragma once |
| 21 | |
| 22 | #include <stdbool.h> |
| 23 | #include <osmocom/core/linuxlist.h> |
| 24 | #include <osmocom/core/sockaddr_str.h> |
| 25 | |
| 26 | struct osmo_gsup_client; |
| 27 | struct osmo_gsup_message; |
| 28 | struct osmo_gsup_req; |
| 29 | struct msgb; |
| 30 | |
| 31 | #define LOG_REMOTE_HLR(remote_hlr, level, fmt, args...) \ |
| 32 | LOGP(DDGSM, level, "(Proxy HLR-" OSMO_SOCKADDR_STR_FMT ") " fmt, \ |
| 33 | OSMO_SOCKADDR_STR_FMT_ARGS((remote_hlr) ? &(remote_hlr)->addr : NULL), ##args) |
| 34 | |
| 35 | #define LOG_REMOTE_HLR_MSG(remote_hlr, gsup_msg, level, fmt, args...) \ |
| 36 | LOG_REMOTE_HLR(remote_hlr, level, "%s: " fmt, osmo_gsup_message_type_name((gsup_msg)->message_type), ##args) |
| 37 | |
| 38 | /* GSUP client link for proxying to a remote HLR. */ |
| 39 | struct remote_hlr { |
| 40 | struct llist_head entry; |
| 41 | struct osmo_sockaddr_str addr; |
| 42 | struct osmo_gsup_client *gsupc; |
| 43 | struct llist_head pending_up_callbacks; |
| 44 | }; |
| 45 | |
| 46 | /*! Receive a remote_hlr address when connecting succeeded, or remote_hlr == NULL on error. |
| 47 | * \param addr GSUP IP address and port for which the connection was requested. |
| 48 | * \param remote_hlr The connected remote_hlr ready for sending, or NULL if connecting failed. |
| 49 | * \param data Same a passed to remote_hlr_get_or_connect(). */ |
| 50 | typedef void (*remote_hlr_connect_result_cb_t)(const struct osmo_sockaddr_str *addr, struct remote_hlr *remote_hlr, void *data); |
| 51 | |
| 52 | struct remote_hlr *remote_hlr_get_or_connect(const struct osmo_sockaddr_str *addr, bool connect, |
| 53 | remote_hlr_connect_result_cb_t connect_result_cb, void *data); |
| 54 | void remote_hlr_destroy(struct remote_hlr *remote_hlr); |
| 55 | int remote_hlr_msgb_send(struct remote_hlr *remote_hlr, struct msgb *msg); |
| 56 | void remote_hlr_gsup_forward_to_remote_hlr(struct remote_hlr *remote_hlr, struct osmo_gsup_req *req, |
| 57 | struct osmo_gsup_message *modified_gsup); |
| 58 | |
| 59 | bool remote_hlr_is_up(struct remote_hlr *remote_hlr); |