| /* 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; |
| } |