92 lines
3.3 KiB
C
92 lines
3.3 KiB
C
/* (C) 2018 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
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*
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* All Rights Reserved
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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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/* This is kept separate to be able to override the actual sending functions from unit tests. */
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#include <errno.h>
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#include <osmocom/hlr/gsup_server.h>
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#include <osmocom/hlr/gsup_router.h>
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#include <osmocom/core/logging.h>
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/*! Send a msgb to a given address using routing.
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* \param[in] gs gsup server
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* \param[in] addr IPA name of the client (SGSN, MSC/VLR). Although this is passed like a blob, together with the
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* length, it must be nul-terminated! This is for legacy reasons, see the discussion here:
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* https://gerrit.osmocom.org/#/c/osmo-hlr/+/13048/
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* \param[in] addrlen length of addr, *including the nul-byte* (strlen(addr) + 1).
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* \param[in] msg message buffer
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*/
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int osmo_gsup_addr_send(struct osmo_gsup_server *gs,
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const uint8_t *addr, size_t addrlen,
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struct msgb *msg)
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{
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struct osmo_gsup_conn *conn;
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conn = gsup_route_find(gs, addr, addrlen);
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if (!conn) {
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LOGP(DLGSUP, LOGL_ERROR,
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"Cannot find route for addr %s\n", osmo_quote_str((const char*)addr, addrlen));
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msgb_free(msg);
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return -ENODEV;
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}
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return osmo_gsup_conn_send(conn, msg);
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}
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/*! Send a msgb to a given address using routing.
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* \param[in] gs gsup server
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* \param[in] ipa_name IPA unit name of the client (SGSN, MSC/VLR, proxy).
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* \param[in] msg message buffer
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*/
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int osmo_gsup_send_to_ipa_name(struct osmo_gsup_server *gs, const struct osmo_ipa_name *ipa_name, struct msgb *msg)
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{
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if (ipa_name->val[ipa_name->len - 1]) {
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/* Is not nul terminated. But for legacy reasons we (still) require that. */
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if (ipa_name->len >= sizeof(ipa_name->val)) {
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LOGP(DLGSUP, LOGL_ERROR, "IPA unit name is too long: %s\n",
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osmo_ipa_name_to_str(ipa_name));
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return -EINVAL;
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}
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struct osmo_ipa_name ipa_name2 = *ipa_name;
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ipa_name2.val[ipa_name->len] = '\0';
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ipa_name2.len++;
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return osmo_gsup_addr_send(gs, ipa_name2.val, ipa_name2.len, msg);
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}
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return osmo_gsup_addr_send(gs, ipa_name->val, ipa_name->len, msg);
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}
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int osmo_gsup_enc_send_to_ipa_name(struct osmo_gsup_server *gs, const struct osmo_ipa_name *ipa_name,
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const struct osmo_gsup_message *gsup)
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{
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struct msgb *msg = osmo_gsup_msgb_alloc("GSUP Tx");
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int rc;
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rc = osmo_gsup_encode(msg, gsup);
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if (rc) {
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LOGP(DLGSUP, LOGL_ERROR, "IMSI-%s: Cannot encode GSUP: %s\n",
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gsup->imsi, osmo_gsup_message_type_name(gsup->message_type));
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msgb_free(msg);
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return -EINVAL;
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}
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LOGP(DLGSUP, LOGL_DEBUG, "IMSI-%s: Tx: %s\n", gsup->imsi, osmo_gsup_message_type_name(gsup->message_type));
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return osmo_gsup_send_to_ipa_name(gs, ipa_name, msg);
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}
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