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