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