94 lines
2.5 KiB
C
94 lines
2.5 KiB
C
/* GSM USSD external MAP interface */
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/* (C) 2015 by Sergey Kostanbaev <sergey.kostanbaev@gmail.com>
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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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#include <openbsc/gsm_ussd_map.h>
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#include <openbsc/gsm_subscriber.h>
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#include <openbsc/gsm_04_08.h>
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#include <openbsc/debug.h>
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#include <openbsc/db.h>
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#include <openbsc/chan_alloc.h>
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#include <osmocom/gsm/protocol/gsm_04_08_gprs.h>
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#include <osmocom/gsm/gsup.h>
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#include <openbsc/gsup_client.h>
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#include <openbsc/osmo_msc.h>
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#include <openbsc/gprs_utils.h>
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#include <openbsc/ussd.h>
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int ussd_map_tx_message(struct gsm_network* net,
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struct ss_header *req,
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const char* extension,
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uint32_t ref,
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const uint8_t* component_data)
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{
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struct msgb *msg = gsup_client_msgb_alloc();
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if (!msg)
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return -ENOMEM;
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subscr_uss_message(msg, req, extension, ref, component_data);
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return gsup_client_send(net->ussd_sup_client, msg);
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}
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static int ussd_map_rx_message_int(struct gsm_network *net, const uint8_t* data, size_t len)
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{
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char extension[32] = {0};
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uint32_t ref;
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struct ss_header ss;
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memset(&ss, 0, sizeof(ss));
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if (rx_uss_message_parse(data, len, &ss, &ref, extension, sizeof(extension))) {
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LOGP(DSS, LOGL_ERROR, "Can't parse SUP MAP SS message\n");
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return -1;
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}
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LOGP(DSS, LOGL_ERROR, "Got type=0x%02x len=%d\n",
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ss.message_type, ss.component_length);
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return on_ussd_response(net, ref, &ss, data + ss.component_offset, extension);
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}
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static int ussd_map_rx_message(struct gsup_client *sup_client, struct msgb *msg)
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{
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uint8_t *data = msgb_l2(msg);
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size_t data_len = msgb_l2len(msg);
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struct gsm_network *gsmnet = (struct gsm_network *)sup_client->data;
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if (*data != OSMO_GSUP_MSGT_USSD_MAP) {
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return -1;
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}
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return ussd_map_rx_message_int(gsmnet, data, data_len);
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}
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int ussd_map_read_cb(struct gsup_client *sup_client, struct msgb *msg)
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{
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int rc;
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rc = ussd_map_rx_message(sup_client, msg);
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msgb_free(msg);
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if (rc < 0)
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return -1;
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return rc;
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}
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