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/*
* (C) 2010 by Holger Hans Peter Freyther <zecke@selfish.org>
* (C) 2010 by On-Waves
* All Rights Reserved
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <isup_types.h>
#include <cellmgr_debug.h>
#include <osmocore/msgb.h>
/* this message contains the range */
int isup_parse_grs(const uint8_t *data, uint8_t in_length)
{
uint8_t ptr;
uint8_t length;
if (in_length > 3) {
LOGP(DISUP, LOGL_ERROR, "This needs three bytes.\n");
return -1;
}
ptr = data[0];
if (1 + ptr > in_length) {
LOGP(DISUP, LOGL_ERROR, "Pointing outside the packet.\n");
return -1;
}
length = data[0 + ptr];
if (1 + ptr + 1 > in_length) {
LOGP(DISUP, LOGL_ERROR, "No space for the data.\n");
return -1;
}
return data[0 + ptr + 1];
}
/* Handle incoming ISUP data */
static int handle_circuit_reset_grs(struct mtp_link *link, int sls,
const uint8_t *data, int size)
{
int range;
range = isup_parse_grs(data, size);
if (range < 0)
return -1;
printf("ASKED to reset range: %d\n", range);
return 0;
}
int mtp_link_forward_isup(struct mtp_link *link, struct msgb *msg, int sls)
{
int rc = -1;
int payload_size;
struct isup_msg_hdr *hdr;
if (msgb_l3len(msg) < sizeof(*hdr)) {
LOGP(DISUP, LOGL_ERROR, "ISUP header is too short.\n");
return -1;
}
hdr = (struct isup_msg_hdr *) msg->l3h;
payload_size = msgb_l3len(msg) - sizeof(*hdr);
switch (hdr->msg_type) {
case ISUP_MSG_GRS:
rc = handle_circuit_reset_grs(link, sls, hdr->data, payload_size);
break;
default:
LOGP(DISUP, LOGL_NOTICE, "ISUP msg not handled: 0x%x\n", hdr->msg_type);
break;
}
return rc;
}
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