Neels Hofmeyr | 9d307ec | 2018-05-04 16:06:32 +0200 | [diff] [blame] | 1 | /* (C) 2018 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 | /* This is kept separate to be able to override the actual sending functions from unit tests. */ |
| 21 | |
| 22 | #include <errno.h> |
| 23 | |
Neels Hofmeyr | 2f75803 | 2019-11-20 00:37:07 +0100 | [diff] [blame] | 24 | #include <osmocom/hlr/gsup_server.h> |
| 25 | #include <osmocom/hlr/gsup_router.h> |
Neels Hofmeyr | 9d307ec | 2018-05-04 16:06:32 +0200 | [diff] [blame] | 26 | |
| 27 | #include <osmocom/core/logging.h> |
| 28 | |
Oliver Smith | f7d3251 | 2019-04-08 15:00:43 +0200 | [diff] [blame] | 29 | /*! Send a msgb to a given address using routing. |
| 30 | * \param[in] gs gsup server |
| 31 | * \param[in] addr IPA name of the client (SGSN, MSC/VLR). Although this is passed like a blob, together with the |
| 32 | * length, it must be nul-terminated! This is for legacy reasons, see the discussion here: |
| 33 | * https://gerrit.osmocom.org/#/c/osmo-hlr/+/13048/ |
| 34 | * \param[in] addrlen length of addr, *including the nul-byte* (strlen(addr) + 1). |
| 35 | * \param[in] msg message buffer |
| 36 | */ |
Neels Hofmeyr | 9d307ec | 2018-05-04 16:06:32 +0200 | [diff] [blame] | 37 | int osmo_gsup_addr_send(struct osmo_gsup_server *gs, |
| 38 | const uint8_t *addr, size_t addrlen, |
| 39 | struct msgb *msg) |
| 40 | { |
| 41 | struct osmo_gsup_conn *conn; |
| 42 | |
| 43 | conn = gsup_route_find(gs, addr, addrlen); |
| 44 | if (!conn) { |
Neels Hofmeyr | ad868e2 | 2019-11-20 02:36:45 +0100 | [diff] [blame] | 45 | LOGP(DLGSUP, LOGL_ERROR, |
| 46 | "Cannot find route for addr %s\n", osmo_quote_str((const char*)addr, addrlen)); |
Neels Hofmeyr | 9d307ec | 2018-05-04 16:06:32 +0200 | [diff] [blame] | 47 | msgb_free(msg); |
| 48 | return -ENODEV; |
| 49 | } |
| 50 | |
| 51 | return osmo_gsup_conn_send(conn, msg); |
| 52 | } |
| 53 | |
Neels Hofmeyr | ad868e2 | 2019-11-20 02:36:45 +0100 | [diff] [blame] | 54 | /*! Send a msgb to a given address using routing. |
| 55 | * \param[in] gs gsup server |
| 56 | * \param[in] ipa_name IPA unit name of the client (SGSN, MSC/VLR, proxy). |
| 57 | * \param[in] msg message buffer |
| 58 | */ |
| 59 | int osmo_gsup_send_to_ipa_name(struct osmo_gsup_server *gs, const struct osmo_ipa_name *ipa_name, struct msgb *msg) |
| 60 | { |
| 61 | if (ipa_name->val[ipa_name->len - 1]) { |
| 62 | /* Is not nul terminated. But for legacy reasons we (still) require that. */ |
| 63 | if (ipa_name->len >= sizeof(ipa_name->val)) { |
| 64 | LOGP(DLGSUP, LOGL_ERROR, "IPA unit name is too long: %s\n", |
| 65 | osmo_ipa_name_to_str(ipa_name)); |
| 66 | return -EINVAL; |
| 67 | } |
| 68 | struct osmo_ipa_name ipa_name2 = *ipa_name; |
| 69 | ipa_name2.val[ipa_name->len] = '\0'; |
| 70 | ipa_name2.len++; |
| 71 | return osmo_gsup_addr_send(gs, ipa_name2.val, ipa_name2.len, msg); |
| 72 | } |
| 73 | return osmo_gsup_addr_send(gs, ipa_name->val, ipa_name->len, msg); |
| 74 | } |
| 75 | |
| 76 | int osmo_gsup_enc_send_to_ipa_name(struct osmo_gsup_server *gs, const struct osmo_ipa_name *ipa_name, |
| 77 | const struct osmo_gsup_message *gsup) |
| 78 | { |
| 79 | struct msgb *msg = osmo_gsup_msgb_alloc("GSUP Tx"); |
| 80 | int rc; |
| 81 | rc = osmo_gsup_encode(msg, gsup); |
| 82 | if (rc) { |
| 83 | LOGP(DLGSUP, LOGL_ERROR, "IMSI-%s: Cannot encode GSUP: %s\n", |
| 84 | gsup->imsi, osmo_gsup_message_type_name(gsup->message_type)); |
| 85 | msgb_free(msg); |
| 86 | return -EINVAL; |
| 87 | } |
| 88 | |
| 89 | LOGP(DLGSUP, LOGL_DEBUG, "IMSI-%s: Tx: %s\n", gsup->imsi, osmo_gsup_message_type_name(gsup->message_type)); |
| 90 | return osmo_gsup_send_to_ipa_name(gs, ipa_name, msg); |
| 91 | } |