| /* (C) 2018 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de> |
| * |
| * All Rights Reserved |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU Affero General Public License as published by |
| * the Free Software Foundation; either version 3 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU Affero General Public License for more details. |
| * |
| * You should have received a copy of the GNU Affero General Public License |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| * |
| */ |
| |
| /* This is kept separate to be able to override the actual sending functions from unit tests. */ |
| |
| #include <errno.h> |
| |
| #include <osmocom/hlr/gsup_server.h> |
| #include <osmocom/hlr/gsup_router.h> |
| |
| #include <osmocom/core/logging.h> |
| |
| /*! Send a msgb to a given address using routing. |
| * \param[in] gs gsup server |
| * \param[in] addr IPA name of the client (SGSN, MSC/VLR). Although this is passed like a blob, together with the |
| * length, it must be nul-terminated! This is for legacy reasons, see the discussion here: |
| * https://gerrit.osmocom.org/#/c/osmo-hlr/+/13048/ |
| * \param[in] addrlen length of addr, *including the nul-byte* (strlen(addr) + 1). |
| * \param[in] msg message buffer |
| */ |
| int osmo_gsup_addr_send(struct osmo_gsup_server *gs, |
| const uint8_t *addr, size_t addrlen, |
| struct msgb *msg) |
| { |
| struct osmo_gsup_conn *conn; |
| |
| conn = gsup_route_find(gs, addr, addrlen); |
| if (!conn) { |
| LOGP(DLGSUP, LOGL_ERROR, |
| "Cannot find route for addr %s\n", osmo_quote_str((const char*)addr, addrlen)); |
| msgb_free(msg); |
| return -ENODEV; |
| } |
| |
| return osmo_gsup_conn_send(conn, msg); |
| } |
| |
| /*! Send a msgb to a given address using routing. |
| * \param[in] gs gsup server |
| * \param[in] ipa_name IPA unit name of the client (SGSN, MSC/VLR, proxy). |
| * \param[in] msg message buffer |
| */ |
| int osmo_gsup_send_to_ipa_name(struct osmo_gsup_server *gs, const struct osmo_ipa_name *ipa_name, struct msgb *msg) |
| { |
| if (ipa_name->val[ipa_name->len - 1]) { |
| /* Is not nul terminated. But for legacy reasons we (still) require that. */ |
| if (ipa_name->len >= sizeof(ipa_name->val)) { |
| LOGP(DLGSUP, LOGL_ERROR, "IPA unit name is too long: %s\n", |
| osmo_ipa_name_to_str(ipa_name)); |
| return -EINVAL; |
| } |
| struct osmo_ipa_name ipa_name2 = *ipa_name; |
| ipa_name2.val[ipa_name->len] = '\0'; |
| ipa_name2.len++; |
| return osmo_gsup_addr_send(gs, ipa_name2.val, ipa_name2.len, msg); |
| } |
| return osmo_gsup_addr_send(gs, ipa_name->val, ipa_name->len, msg); |
| } |
| |
| int osmo_gsup_enc_send_to_ipa_name(struct osmo_gsup_server *gs, const struct osmo_ipa_name *ipa_name, |
| const struct osmo_gsup_message *gsup) |
| { |
| struct msgb *msg = osmo_gsup_msgb_alloc("GSUP Tx"); |
| int rc; |
| rc = osmo_gsup_encode(msg, gsup); |
| if (rc) { |
| LOGP(DLGSUP, LOGL_ERROR, "IMSI-%s: Cannot encode GSUP: %s\n", |
| gsup->imsi, osmo_gsup_message_type_name(gsup->message_type)); |
| msgb_free(msg); |
| return -EINVAL; |
| } |
| |
| LOGP(DLGSUP, LOGL_DEBUG, "IMSI-%s: Tx: %s\n", gsup->imsi, osmo_gsup_message_type_name(gsup->message_type)); |
| return osmo_gsup_send_to_ipa_name(gs, ipa_name, msg); |
| } |