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/* Media Gateway Control Protocol Media Gateway: RFC 3435 */
/* Implementations useful both for the MGCP GW as well as MGCP GW clients */
/*
* (C) 2016 by sysmocom s.m.f.c. GmbH <info@sysmocom.de>
* 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 <errno.h>
#include <osmocom/core/utils.h>
#include <openbsc/mgcp.h>
const struct value_string mgcp_connection_mode_strs[] = {
{ MGCP_CONN_NONE, "none" },
{ MGCP_CONN_RECV_SEND, "sendrecv" },
{ MGCP_CONN_SEND_ONLY, "sendonly" },
{ MGCP_CONN_RECV_ONLY, "recvonly" },
{ MGCP_CONN_LOOPBACK, "loopback" },
{ 0, NULL }
};
/* Ensure that the msg->l2h is NUL terminated. */
int mgcp_msg_terminate_nul(struct msgb *msg)
{
unsigned char *tail = msg->l2h + msgb_l2len(msg); /* char after l2 data */
if (tail[-1] == '\0')
/* nothing to do */;
else if (msgb_tailroom(msg) > 0)
tail[0] = '\0';
else if (tail[-1] == '\r' || tail[-1] == '\n')
tail[-1] = '\0';
else {
LOGP(DMGCP, LOGL_ERROR, "Cannot NUL terminate MGCP message: "
"Length: %d, Buffer size: %d\n",
msgb_l2len(msg), msg->data_len);
return -ENOTSUP;
}
return 0;
}
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