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6779354245
Remove mgcp_common.c and replace with mgcp_common.h. Move mgcp_common.h from mgcp_client/ to mgcp/; Place a compile-time copy of it back in mgcp_client/. Add builddir/include to compiler -I paths to find generated header. Rationale: - Keep separate copies of the file for each of the library to not require debian dependencies between the two libraries. - Avoid code dup by copying during 'make' (think: a generated header, BUILT_SOURCE). - The copy does not have implications for linking (like mgcp_common.c did) nor is it a source for build confusion or fallout in other projects, because it does not reach across several git source trees (like gsm_data_shared.h did). mgcp_connection_mode_strs are not actually used in libosmo-mgcp, so drop them. (It would make semantic sense to have then in mgcp, but we can add it when it is needed. A similar value string array remains in libosmo-mgcp-client.) Change-Id: I7a5d3b9a2eb90be7e34b95efa529429f2e6c3ed8
72 lines
2.4 KiB
C
72 lines
2.4 KiB
C
/* MGCP common implementations.
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* These are used in libosmo-mgcp as well as libosmo-mgcp-client.
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* To avoid interdependency, these are implemented in .h file only. */
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/*
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* (C) 2017 by sysmocom s.f.m.c. GmbH <info@sysmocom.de>
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* (C) 2009-2012 by Holger Hans Peter Freyther <zecke@selfish.org>
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* (C) 2009-2012 by On-Waves
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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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/* Two copies of this file are kept in osmocom/mgcp/ and osmocom/mgcp_client/.
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* Since both are by definition identical, use the old header exclusion ifdefs
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* instead of '#pragma once' to avoid including both of these files.
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* Though at the time of writing there are no such users, this allows including
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* both libosmo-mgcp and libosmo-mgcp-client headers in the same file. */
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#ifndef OSMO_MGCP_COMMON_H
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#define OSMO_MGCP_COMMON_H
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#include <string.h>
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#include <errno.h>
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#include <osmocom/core/msgb.h>
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#include <osmocom/core/logging.h>
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#define for_each_non_empty_line(line, save) \
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for (line = strtok_r(NULL, "\r\n", &save); line; \
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line = strtok_r(NULL, "\r\n", &save))
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enum mgcp_connection_mode {
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MGCP_CONN_NONE = 0,
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MGCP_CONN_RECV_ONLY = 1,
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MGCP_CONN_SEND_ONLY = 2,
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MGCP_CONN_RECV_SEND = MGCP_CONN_RECV_ONLY | MGCP_CONN_SEND_ONLY,
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MGCP_CONN_LOOPBACK = 4 | MGCP_CONN_RECV_SEND,
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};
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/* Ensure that the msg->l2h is NUL terminated. */
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static inline 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(DLMGCP, 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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#endif
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