Browse Source

Remove libosmo-legacy-mgcp and osmo-bsc-mgcp

They are only used by openbsc.git programs and belong there.

Change-Id: Id31bef052d3f9b8aada1824d6f7f995ebd39bbfd
changes/95/10495/5
Pau Espin 4 years ago
parent
commit
31b4729f27
  1. 1
      Makefile.am
  2. 4
      README
  3. 28
      configure.ac
  4. 11
      contrib/systemd/osmo-bsc-mgcp.service
  5. 21
      debian/control
  6. 36
      debian/copyright
  7. 4
      debian/libosmo-legacy-mgcp-dev.install
  8. 1
      debian/libosmo-legacy-mgcp0.install
  9. 2
      debian/osmo-bsc-mgcp.install
  10. 14
      doc/examples/osmo-bsc_mgcp/mgcp.cfg
  11. 3
      include/Makefile.am
  12. 1
      include/osmocom/Makefile.am
  13. 4
      include/osmocom/legacy_mgcp/Makefile.am
  14. 298
      include/osmocom/legacy_mgcp/mgcp.h
  15. 351
      include/osmocom/legacy_mgcp/mgcp_internal.h
  16. 94
      include/osmocom/legacy_mgcp/mgcp_transcode.h
  17. 41
      include/osmocom/legacy_mgcp/osmux.h
  18. 8
      include/osmocom/legacy_mgcp/vty.h
  19. 10
      libosmo-legacy-mgcp.pc.in
  20. 2
      osmoappdesc.py
  21. 2
      src/Makefile.am
  22. 51
      src/libosmo-legacy-mgcp/Makefile.am
  23. 187
      src/libosmo-legacy-mgcp/g711common.h
  24. 54
      src/libosmo-legacy-mgcp/mgcp_common.c
  25. 1202
      src/libosmo-legacy-mgcp/mgcp_network.c
  26. 588
      src/libosmo-legacy-mgcp/mgcp_osmux.c
  27. 1665
      src/libosmo-legacy-mgcp/mgcp_protocol.c
  28. 305
      src/libosmo-legacy-mgcp/mgcp_sdp.c
  29. 611
      src/libosmo-legacy-mgcp/mgcp_transcode.c
  30. 1627
      src/libosmo-legacy-mgcp/mgcp_vty.c
  31. 31
      src/osmo-bsc_mgcp/Makefile.am
  32. 351
      src/osmo-bsc_mgcp/mgcp_main.c
  33. 3
      tests/Makefile.am
  34. 1
      tests/atlocal.in
  35. 61
      tests/legacy_mgcp/Makefile.am
  36. 1242
      tests/legacy_mgcp/mgcp_test.c
  37. 480
      tests/legacy_mgcp/mgcp_test.ok
  38. 662
      tests/legacy_mgcp/mgcp_transcoding_test.c
  39. 539
      tests/legacy_mgcp/mgcp_transcoding_test.ok
  40. 13
      tests/testsuite.at
  41. 171
      tests/vty_test_runner.py

1
Makefile.am

@ -18,7 +18,6 @@ SUBDIRS = \
pkgconfigdir = $(libdir)/pkgconfig
pkgconfig_DATA = \
libosmo-legacy-mgcp.pc \
libosmo-mgcp-client.pc \
$(NULL)

4
README

@ -19,10 +19,6 @@ OsmoBSC, and receives and sends RTP streams as configured via MGCP.
The libosmo-mgcp-client library exposes utilities used by e.g. OsmoMSC (found
in osmo-msc.git) to instruct OsmoMGW via its MGCP service.
The libosmo-mgcp library exposes MGCP server utilities used by e.g. OsmoBSC-NAT
(found in osmo-bsc.git) to navigate RTP streams through a NAT.
(At time of writing, this is still called libosmo-legacy-mgcp.)
Find OsmoMGW issue tracker and wiki online at
https://osmocom.org/projects/osmo-mgw
https://osmocom.org/projects/osmo-mgw/wiki

28
configure.ac

@ -74,29 +74,6 @@ then
CPPFLAGS="$CPPFLAGS $WERROR_FLAGS"
fi
# Enable/disable transcoding within osmo-bsc_mgcp?
AC_ARG_ENABLE([mgcp-transcoding], [AS_HELP_STRING([--enable-mgcp-transcoding], [Build the MGCP gateway with internal transcoding enabled.])],
[osmo_ac_mgcp_transcoding="$enableval"],[osmo_ac_mgcp_transcoding="no"])
AC_ARG_WITH([g729], [AS_HELP_STRING([--with-g729], [Enable G.729 encoding/decoding.])], [osmo_ac_with_g729="$withval"],[osmo_ac_with_g729="no"])
if test "$osmo_ac_mgcp_transcoding" = "yes" ; then
AC_CHECK_HEADERS([gsm.h gsm/gsm.h], [osmo_ac_found_gsm_headers=yes])
if test "$osmo_ac_found_gsm_headers" != "yes" ; then
AC_MSG_ERROR([Unable to find the libgsm headers])
fi
AC_SUBST(HAVE_GSM_H)
AC_SUBST(HAVE_GSM_GSM_H)
AC_SEARCH_LIBS([gsm_create], [gsm], [LIBRARY_GSM="$LIBS";LIBS=""], [AC_MSG_ERROR([--enable-mgcp-transcoding: cannot find usable libgsm])])
AC_SUBST(LIBRARY_GSM)
if test "$osmo_ac_with_g729" = "yes" ; then
PKG_CHECK_MODULES(LIBBCG729, libbcg729 >= 0.1, [AC_DEFINE([HAVE_BCG729], [1], [Use bgc729 decoder/encoder])])
fi
AC_DEFINE(BUILD_MGCP_TRANSCODING, 1, [Define if we want to build the MGCP gateway with transcoding support])
fi
AM_CONDITIONAL(BUILD_MGCP_TRANSCODING, test "x$osmo_ac_mgcp_transcoding" = "xyes")
AC_SUBST(osmo_ac_mgcp_transcoding)
dnl Checks for typedefs, structures and compiler characteristics
# The following test is taken from WebKit's webkit.m4
@ -158,22 +135,17 @@ dnl Generate the output
AM_CONFIG_HEADER(bscconfig.h)
AC_OUTPUT(
libosmo-legacy-mgcp.pc
libosmo-mgcp-client.pc
include/Makefile
include/osmocom/Makefile
include/osmocom/legacy_mgcp/Makefile
include/osmocom/mgcp_client/Makefile
include/osmocom/mgcp/Makefile
src/Makefile
src/libosmo-legacy-mgcp/Makefile
src/libosmo-mgcp-client/Makefile
src/libosmo-mgcp/Makefile
src/osmo-bsc_mgcp/Makefile
src/osmo-mgw/Makefile
tests/Makefile
tests/atlocal
tests/legacy_mgcp/Makefile
tests/mgcp_client/Makefile
tests/mgcp/Makefile
doc/Makefile

11
contrib/systemd/osmo-bsc-mgcp.service

@ -1,11 +0,0 @@
[Unit]
Description=OpenBSC MGCP
[Service]
Type=simple
Restart=always
ExecStart=/usr/bin/osmo-bsc_mgcp -s -c /etc/osmocom/osmo-bsc-mgcp.cfg
RestartSec=2
[Install]
WantedBy=multi-user.target

21
debian/control vendored

@ -33,24 +33,3 @@ Architecture: any
Multi-Arch: same
Depends: libosmo-mgcp-client3 (= ${binary:Version}), ${misc:Depends}
Description: libosmo-mgcp-client: Osmocom's Media Gateway Control Protocol client utilities
Package: osmo-bsc-mgcp
Architecture: any
Multi-Arch: foreign
Depends: libosmo-legacy-mgcp0, ${misc:Depends}, ${shlibs:Depends}
Description: OsmoBSC-MGCP: Osmocom's Legacy Media Gateway; use osmo-mgw instead.
Package: libosmo-legacy-mgcp0
Section: libs
Architecture: any
Multi-Arch: same
Pre-Depends: ${misc:Pre-Depends}
Depends: ${misc:Depends}, ${shlibs:Depends}
Description: libosmo-legacy-mgcp: Osmocom's Legacy Media Gateway server library; use libosmo-mgcp instead.
Package: libosmo-legacy-mgcp-dev
Section: libdevel
Architecture: any
Multi-Arch: same
Depends: libosmo-legacy-mgcp0 (= ${binary:Version}), ${misc:Depends}
Description: libosmo-legacy-mgcp: Osmocom's Legacy Media Gateway server library; use libosmo-mgcp instead.

36
debian/copyright vendored

@ -40,30 +40,6 @@ License: GPL-2.0+
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Files: src/libosmo-legacy-mgcp/g711common.h
Copyright: 2000 Abramo Bagnara <abramo@alsa-project.org>
License: GPL-2.0+
Wrapper for linphone Codec class by Simon Morlat <simon.morlat@linphone.org>
.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
.
The FSF address in the above text is the old one.
.
On Debian systems, the complete text of the GNU General Public License
Version 2 can be found in `/usr/share/common-licenses/GPL-2'.
Files: tests/vty_test_runner.py
Copyright: 2013 Holger Hans Peter Freyther
2013 Katerina Barone-Adesi <kat.obsc@gmail.com>
@ -87,15 +63,3 @@ License: GPL-3.0+
Files: osmoappdesc.py
Copyright: 2013 Katerina Barone-Adesi <kat.obsc@gmail.com>
License: GPL-3.0+
Files: src/libosmo-legacy-mgcp/mgcp_osmux.c
Copyright: 2012-2013 On Waves ehf <http://www.on-waves.com>
2012-2013 Pablo Neira Ayuso <pablo@gnumonks.org>
License: AGPL-3.0+
All rights not specifically granted under this license are 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.

4
debian/libosmo-legacy-mgcp-dev.install vendored

@ -1,4 +0,0 @@
usr/include/osmocom/legacy_mgcp
usr/lib/*/libosmo-legacy-mgcp.so
usr/lib/*/libosmo-legacy-mgcp.a
usr/lib/*/pkgconfig/libosmo-legacy-mgcp.pc

1
debian/libosmo-legacy-mgcp0.install vendored

@ -1 +0,0 @@
usr/lib/*/libosmo-legacy-mgcp.so.*

2
debian/osmo-bsc-mgcp.install vendored

@ -1,2 +0,0 @@
usr/bin/osmo-bsc_mgcp
usr/share/doc/osmo-mgw/examples/osmo-bsc_mgcp/mgcp.cfg

14
doc/examples/osmo-bsc_mgcp/mgcp.cfg

@ -1,14 +0,0 @@
!
! MGCP configuration example
!
mgcp
!local ip 10.23.24.2
!bts ip 10.24.24.1
!bind ip 10.23.24.1
bind port 2427
rtp base 4000
rtp force-ptime 20
sdp audio payload number 98
sdp audio payload name AMR/8000
number endpoints 31
no rtcp-omit

3
include/Makefile.am

@ -3,9 +3,6 @@ SUBDIRS = \
$(NULL)
nobase_include_HEADERS = \
osmocom/legacy_mgcp/mgcp.h \
osmocom/legacy_mgcp/mgcp_internal.h \
osmocom/legacy_mgcp/osmux.h \
osmocom/mgcp_client/mgcp_client.h \
osmocom/mgcp_client/mgcp_client_fsm.h \
osmocom/mgcp_client/mgcp_common.h \

1
include/osmocom/Makefile.am

@ -1,5 +1,4 @@
SUBDIRS = \
legacy_mgcp \
mgcp_client \
mgcp \
$(NULL)

4
include/osmocom/legacy_mgcp/Makefile.am

@ -1,4 +0,0 @@
noinst_HEADERS = \
mgcp_transcode.h \
vty.h \
$(NULL)

298
include/osmocom/legacy_mgcp/mgcp.h

@ -1,298 +0,0 @@
/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
/*
* (C) 2009-2012 by Holger Hans Peter Freyther <zecke@selfish.org>
* (C) 2009-2012 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 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/>.
*
*/
#ifndef OPENBSC_MGCP_H
#define OPENBSC_MGCP_H
#include <osmocom/core/msgb.h>
#include <osmocom/core/write_queue.h>
#include <osmocom/core/timer.h>
#include <osmocom/core/logging.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#define RTP_PORT_DEFAULT 4000
#define RTP_PORT_NET_DEFAULT 16000
/**
* Calculate the RTP audio port for the given multiplex
* and the direction. This allows a semi static endpoint
* to port calculation removing the need for the BSC
* and the MediaGateway to communicate.
*
* Port usage explained:
* base + (multiplex * 2) + 0 == local port to wait for network packets
* base + (multiplex * 2) + 1 == local port for rtcp
*
* The above port will receive packets from the BTS that need
* to be patched and forwarded to the network.
* The above port will receive packets from the network that
* need to be patched and forwarded to the BTS.
*
* We assume to have a static BTS IP address so we can differentiate
* network and BTS.
*
*/
static inline int rtp_calculate_port(int multiplex, int base)
{
return base + (multiplex * 2);
}
/*
* Handling of MGCP Endpoints and the MGCP Config
*/
struct mgcp_endpoint;
struct mgcp_config;
struct mgcp_trunk_config;
struct mgcp_rtp_end;
#define MGCP_ENDP_CRCX 1
#define MGCP_ENDP_DLCX 2
#define MGCP_ENDP_MDCX 3
/*
* what to do with the msg?
* - continue as usual?
* - reject and send a failure code?
* - defer? do not send anything
*/
#define MGCP_POLICY_CONT 4
#define MGCP_POLICY_REJECT 5
#define MGCP_POLICY_DEFER 6
typedef int (*mgcp_realloc)(struct mgcp_trunk_config *cfg, int endpoint);
typedef int (*mgcp_change)(struct mgcp_trunk_config *cfg, int endpoint, int state);
typedef int (*mgcp_policy)(struct mgcp_trunk_config *cfg, int endpoint, int state, const char *transactio_id);
typedef int (*mgcp_reset)(struct mgcp_trunk_config *cfg);
typedef int (*mgcp_rqnt)(struct mgcp_endpoint *endp, char tone);
/**
* Return:
* < 0 in case no audio was processed
* >= 0 in case audio was processed. The remaining payload
* length will be returned.
*/
typedef int (*mgcp_processing)(struct mgcp_endpoint *endp,
struct mgcp_rtp_end *dst_end,
char *data, int *len, int buf_size);
typedef int (*mgcp_processing_setup)(struct mgcp_endpoint *endp,
struct mgcp_rtp_end *dst_end,
struct mgcp_rtp_end *src_end);
typedef void (*mgcp_get_format)(struct mgcp_endpoint *endp,
int *payload_type,
const char**subtype_name,
const char**fmtp_extra);
#define PORT_ALLOC_STATIC 0
#define PORT_ALLOC_DYNAMIC 1
/**
* This holds information on how to allocate ports
*/
struct mgcp_port_range {
int mode;
/* addr or NULL to fall-back to default */
char *bind_addr;
/* pre-allocated from a base? */
int base_port;
/* dynamically allocated */
int range_start;
int range_end;
int last_port;
};
#define MGCP_KEEPALIVE_ONCE (-1)
struct mgcp_trunk_config {
struct llist_head entry;
struct mgcp_config *cfg;
int trunk_nr;
int trunk_type;
char *audio_fmtp_extra;
char *audio_name;
int audio_payload;
int audio_send_ptime;
int audio_send_name;
int audio_loop;
int no_audio_transcoding;
int omit_rtcp;
int keepalive_interval;
/* RTP patching */
int force_constant_ssrc; /* 0: don't, 1: once */
int force_aligned_timing;
/* spec handling */
int force_realloc;
/* timer */
struct osmo_timer_list keepalive_timer;
unsigned int number_endpoints;
struct mgcp_endpoint *endpoints;
};
enum mgcp_role {
MGCP_BSC = 0,
MGCP_BSC_NAT,
};
enum mgcp_connection_mode {
MGCP_CONN_NONE = 0,
MGCP_CONN_RECV_ONLY = 1,
MGCP_CONN_SEND_ONLY = 2,
MGCP_CONN_RECV_SEND = MGCP_CONN_RECV_ONLY | MGCP_CONN_SEND_ONLY,
MGCP_CONN_LOOPBACK = 4 | MGCP_CONN_RECV_SEND,
};
struct mgcp_config {
int source_port;
char *local_ip;
char *source_addr;
char *bts_ip;
char *call_agent_addr;
struct in_addr bts_in;
/* transcoder handling */
char *transcoder_ip;
struct in_addr transcoder_in;
int transcoder_remote_base;
/* RTP processing */
mgcp_processing rtp_processing_cb;
mgcp_processing_setup setup_rtp_processing_cb;
mgcp_get_format get_net_downlink_format_cb;
struct osmo_wqueue gw_fd;
struct mgcp_port_range bts_ports;
struct mgcp_port_range net_ports;
struct mgcp_port_range transcoder_ports;
int endp_dscp;
int bts_force_ptime;
mgcp_change change_cb;
mgcp_policy policy_cb;
mgcp_reset reset_cb;
mgcp_realloc realloc_cb;
mgcp_rqnt rqnt_cb;
void *data;
uint32_t last_call_id;
/* trunk handling */
struct mgcp_trunk_config trunk;
struct llist_head trunks;
/* only used for start with a static configuration */
int last_net_port;
int last_bts_port;
enum mgcp_role role;
/* osmux translator: 0 means disabled, 1 means enabled */
int osmux;
/* addr to bind the server to */
char *osmux_addr;
/* The BSC-NAT may ask for enabling osmux on demand. This tells us if
* the osmux socket is already initialized.
*/
int osmux_init;
/* osmux batch factor: from 1 to 4 maximum */
int osmux_batch;
/* osmux batch size (in bytes) */
int osmux_batch_size;
/* osmux port */
uint16_t osmux_port;
/* Pad circuit with dummy messages until we see the first voice
* message.
*/
uint16_t osmux_dummy;
/* Use a jitterbuffer on the bts-side receiver */
bool bts_use_jibuf;
/* Minimum and maximum buffer size for the jitter buffer, in ms */
uint32_t bts_jitter_delay_min;
uint32_t bts_jitter_delay_max;
};
/* config management */
struct mgcp_config *mgcp_config_alloc(void);
int mgcp_parse_config(const char *config_file, struct mgcp_config *cfg,
enum mgcp_role role);
int mgcp_vty_init(void);
int mgcp_endpoints_allocate(struct mgcp_trunk_config *cfg);
void mgcp_release_endp(struct mgcp_endpoint *endp);
void mgcp_initialize_endp(struct mgcp_endpoint *endp);
int mgcp_reset_transcoder(struct mgcp_config *cfg);
void mgcp_format_stats(struct mgcp_endpoint *endp, char *stats, size_t size);
int mgcp_parse_stats(struct msgb *msg, uint32_t *ps, uint32_t *os, uint32_t *pr, uint32_t *_or, int *loss, uint32_t *jitter);
void mgcp_trunk_set_keepalive(struct mgcp_trunk_config *tcfg, int interval);
/*
* format helper functions
*/
struct msgb *mgcp_handle_message(struct mgcp_config *cfg, struct msgb *msg);
/* adc helper */
static inline int mgcp_timeslot_to_endpoint(int multiplex, int timeslot)
{
if (timeslot == 0) {
LOGP(DLMGCP, LOGL_ERROR, "Timeslot should not be 0\n");
timeslot = 255;
}
return timeslot + (32 * multiplex);
}
static inline void mgcp_endpoint_to_timeslot(int endpoint, int *multiplex, int *timeslot)
{
*multiplex = endpoint / 32;
*timeslot = endpoint % 32;
}
int mgcp_send_reset_ep(struct mgcp_endpoint *endp, int endpoint);
int mgcp_send_reset_all(struct mgcp_config *cfg);
int mgcp_create_bind(const char *source_addr, struct osmo_fd *fd, int port);
int mgcp_send(struct mgcp_endpoint *endp, int dest, int is_rtp, struct sockaddr_in *addr, char *buf, int rc);
int mgcp_udp_send(int fd, struct in_addr *addr, int port, char *buf, int len);
#endif

351
include/osmocom/legacy_mgcp/mgcp_internal.h

@ -1,351 +0,0 @@
/* MGCP Private Data */
/*
* (C) 2009-2012 by Holger Hans Peter Freyther <zecke@selfish.org>
* (C) 2009-2012 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 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/>.
*
*/
#pragma once
#include <string.h>
#include <osmocom/core/select.h>
#include <osmocom/netif/jibuf.h>
#define CI_UNUSED 0
enum mgcp_trunk_type {
MGCP_TRUNK_VIRTUAL,
MGCP_TRUNK_E1,
};
struct mgcp_rtp_stream_state {
uint32_t ssrc;
uint16_t last_seq;
uint32_t last_timestamp;
uint32_t err_ts_counter;
int32_t last_tsdelta;
uint32_t last_arrival_time;
};
struct mgcp_rtp_state {
int initialized;
int patch_ssrc;
uint32_t orig_ssrc;
int seq_offset;
int32_t timestamp_offset;
uint32_t packet_duration;
struct mgcp_rtp_stream_state in_stream;
struct mgcp_rtp_stream_state out_stream;
/* jitter and packet loss calculation */
int stats_initialized;
uint16_t stats_base_seq;
uint16_t stats_max_seq;
uint32_t stats_ssrc;
uint32_t stats_jitter;
int32_t stats_transit;
int stats_cycles;
bool patched_first_rtp_payload; /* FIXME: drop this, see OS#2459 */
};
struct mgcp_rtp_codec {
uint32_t rate;
int channels;
uint32_t frame_duration_num;
uint32_t frame_duration_den;
int payload_type;
char *audio_name;
char *subtype_name;
};
struct mgcp_rtp_end {
/* statistics */
unsigned int packets;
unsigned int octets;
unsigned int dropped_packets;
struct in_addr addr;
/* in network byte order */
int rtp_port, rtcp_port;
/* audio codec information */
struct mgcp_rtp_codec codec;
struct mgcp_rtp_codec alt_codec; /* TODO/XXX: make it generic */
/* per endpoint data */
int frames_per_packet;
uint32_t packet_duration_ms;
char *fmtp_extra;
int output_enabled;
int force_output_ptime;
/* RTP patching */
int force_constant_ssrc; /* -1: always, 0: don't, 1: once */
int force_aligned_timing;
void *rtp_process_data;
/*
* Each end has a socket...
*/
struct osmo_fd rtp;
struct osmo_fd rtcp;
int local_port;
int local_alloc;
};
enum {
MGCP_TAP_BTS_IN,
MGCP_TAP_BTS_OUT,
MGCP_TAP_NET_IN,
MGCP_TAP_NET_OUT,
/* last element */
MGCP_TAP_COUNT
};
struct mgcp_rtp_tap {
int enabled;
struct sockaddr_in forward;
};
struct mgcp_lco {
char *string;
char *codec;
int pkt_period_min; /* time in ms */
int pkt_period_max; /* time in ms */
};
enum mgcp_type {
MGCP_RTP_DEFAULT = 0,
MGCP_RTP_TRANSCODED,
MGCP_OSMUX_BSC,
MGCP_OSMUX_BSC_NAT,
};
#include <osmocom/legacy_mgcp/osmux.h>
struct mgcp_endpoint {
int allocated;
uint32_t ci;
char *callid;
struct mgcp_lco local_options;
int conn_mode;
int orig_mode;
/* backpointer */
struct mgcp_config *cfg;
struct mgcp_trunk_config *tcfg;
/* port status for bts/net */
struct mgcp_rtp_end bts_end;
struct mgcp_rtp_end net_end;
/*
* For transcoding we will send from the local_port
* of trans_bts and it will arrive at trans_net from
* where we will forward it to the network.
*/
struct mgcp_rtp_end trans_bts;
struct mgcp_rtp_end trans_net;
enum mgcp_type type;
/* sequence bits */
struct mgcp_rtp_state net_state;
struct mgcp_rtp_state bts_state;
/* fields for re-transmission */
char *last_trans;
char *last_response;
/* tap for the endpoint */
struct mgcp_rtp_tap taps[MGCP_TAP_COUNT];
struct {
/* Osmux state: disabled, activating, active */
enum osmux_state state;
/* Allocated Osmux circuit ID for this endpoint */
int allocated_cid;
/* Used Osmux circuit ID for this endpoint */
uint8_t cid;
/* handle to batch messages */
struct osmux_in_handle *in;
/* handle to unbatch messages */
struct osmux_out_handle out;
/* statistics */
struct {
uint32_t chunks;
uint32_t octets;
} stats;
} osmux;
/* Jitter buffer */
struct osmo_jibuf* bts_jb;
/* Use a jitterbuffer on the bts-side receiver */
bool bts_use_jibuf;
/* Minimum and maximum buffer size for the jitter buffer, in ms */
uint32_t bts_jitter_delay_min;
uint32_t bts_jitter_delay_max;
};
#define for_each_line(line, save) \
for (line = strline_r(NULL, &save); line;\
line = strline_r(NULL, &save))
static inline char *strline_r(char *str, char **saveptr)
{
char *result;
if (str)
*saveptr = str;
result = *saveptr;
if (*saveptr != NULL) {
*saveptr = strpbrk(*saveptr, "\r\n");
if (*saveptr != NULL) {
char *eos = *saveptr;
if ((*saveptr)[0] == '\r' && (*saveptr)[1] == '\n')
(*saveptr)++;
(*saveptr)++;
if ((*saveptr)[0] == '\0')
*saveptr = NULL;
*eos = '\0';
}
}
return result;
}
#define ENDPOINT_NUMBER(endp) abs((int)(endp - endp->tcfg->endpoints))
/**
* Internal structure while parsing a request
*/
struct mgcp_parse_data {
struct mgcp_config *cfg;
struct mgcp_endpoint *endp;
char *trans;
char *save;
int found;
};
int mgcp_send_dummy(struct mgcp_endpoint *endp);
int mgcp_bind_bts_rtp_port(struct mgcp_endpoint *endp, int rtp_port);
int mgcp_bind_net_rtp_port(struct mgcp_endpoint *endp, int rtp_port);
int mgcp_bind_trans_bts_rtp_port(struct mgcp_endpoint *enp, int rtp_port);
int mgcp_bind_trans_net_rtp_port(struct mgcp_endpoint *enp, int rtp_port);
int mgcp_free_rtp_port(struct mgcp_rtp_end *end);
/* For transcoding we need to manage an in and an output that are connected */
static inline int endp_back_channel(int endpoint)
{
return endpoint + 60;
}
struct mgcp_trunk_config *mgcp_trunk_alloc(struct mgcp_config *cfg, int index);
struct mgcp_trunk_config *mgcp_trunk_num(struct mgcp_config *cfg, int index);
void mgcp_rtp_end_config(struct mgcp_endpoint *endp, int expect_ssrc_change,
struct mgcp_rtp_end *rtp);
uint32_t mgcp_rtp_packet_duration(struct mgcp_endpoint *endp,
struct mgcp_rtp_end *rtp);
void mgcp_state_calc_loss(struct mgcp_rtp_state *s, struct mgcp_rtp_end *,
uint32_t *expected, int *loss);
uint32_t mgcp_state_calc_jitter(struct mgcp_rtp_state *);
/* payload processing default functions */
int mgcp_rtp_processing_default(struct mgcp_endpoint *endp, struct mgcp_rtp_end *dst_end,
char *data, int *len, int buf_size);
int mgcp_setup_rtp_processing_default(struct mgcp_endpoint *endp,
struct mgcp_rtp_end *dst_end,
struct mgcp_rtp_end *src_end);
void mgcp_get_net_downlink_format_default(struct mgcp_endpoint *endp,
int *payload_type,
const char**subtype_name,
const char**fmtp_extra);
/* internal RTP Annex A counting */
void mgcp_rtp_annex_count(struct mgcp_endpoint *endp, struct mgcp_rtp_state *state,
const uint16_t seq, const int32_t transit,
const uint32_t ssrc);
int mgcp_set_ip_tos(int fd, int tos);
enum {
MGCP_DEST_NET = 0,
MGCP_DEST_BTS,
};
#define MGCP_DUMMY_LOAD 0x23
/**
* SDP related information
*/
/* Assume audio frame length of 20ms */
#define DEFAULT_RTP_AUDIO_FRAME_DUR_NUM 20
#define DEFAULT_RTP_AUDIO_FRAME_DUR_DEN 1000
#define DEFAULT_RTP_AUDIO_PACKET_DURATION_MS 20
#define DEFAULT_RTP_AUDIO_DEFAULT_RATE 8000
#define DEFAULT_RTP_AUDIO_DEFAULT_CHANNELS 1
#define PTYPE_UNDEFINED (-1)
int mgcp_parse_sdp_data(struct mgcp_endpoint *endp, struct mgcp_rtp_end *rtp, struct mgcp_parse_data *p);
int mgcp_set_audio_info(void *ctx, struct mgcp_rtp_codec *codec,
int payload_type, const char *audio_name);
/**
* Internal network related
*/
static inline const char *mgcp_net_src_addr(struct mgcp_endpoint *endp)
{
if (endp->cfg->net_ports.bind_addr)
return endp->cfg->net_ports.bind_addr;
return endp->cfg->source_addr;
}
static inline const char *mgcp_bts_src_addr(struct mgcp_endpoint *endp)
{
if (endp->cfg->bts_ports.bind_addr)
return endp->cfg->bts_ports.bind_addr;
return endp->cfg->source_addr;
}
int mgcp_msg_terminate_nul(struct msgb *msg);
/**
* Internal jitter buffer related
*/
void mgcp_dejitter_udp_send(struct msgb *msg, void *data);

94
include/osmocom/legacy_mgcp/mgcp_transcode.h

@ -1,94 +0,0 @@
/*
* (C) 2014 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 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/>.
*
*/
#ifndef OPENBSC_MGCP_TRANSCODE_H
#define OPENBSC_MGCP_TRANSCODE_H
#include "bscconfig.h"
#if HAVE_GSM_H
#include <gsm.h>
#elif HAVE_GSM_GSM_H
#include <gsm/gsm.h>
#endif
#ifdef HAVE_BCG729
#include <bcg729/decoder.h>
#include <bcg729/encoder.h>
#endif
enum audio_format {
AF_INVALID,
AF_S16,
AF_L16,
AF_GSM,
AF_G729,
AF_PCMA,
AF_PCMU
};
struct mgcp_process_rtp_state {
/* decoding */
enum audio_format src_fmt;
union {
gsm gsm_handle;
#ifdef HAVE_BCG729
bcg729DecoderChannelContextStruct *g729_dec;
#endif
} src;
size_t src_frame_size;
size_t src_samples_per_frame;
/* processing */
/* encoding */
enum audio_format dst_fmt;
union {
gsm gsm_handle;
#ifdef HAVE_BCG729
bcg729EncoderChannelContextStruct *g729_enc;
#endif
} dst;
size_t dst_frame_size;
size_t dst_samples_per_frame;
int dst_packet_duration;
int is_running;
uint16_t next_seq;
uint32_t next_time;
int16_t samples[10*160];
size_t sample_cnt;
size_t sample_offs;
};
int mgcp_transcoding_setup(struct mgcp_endpoint *endp,
struct mgcp_rtp_end *dst_end,
struct mgcp_rtp_end *src_end);
void mgcp_transcoding_net_downlink_format(struct mgcp_endpoint *endp,
int *payload_type,
const char**audio_name,
const char**fmtp_extra);
int mgcp_transcoding_process_rtp(struct mgcp_endpoint *endp,
struct mgcp_rtp_end *dst_end,
char *data, int *len, int buf_size);
int mgcp_transcoding_get_frame_size(void *state_, int nsamples, int dst);
#endif /* OPENBSC_MGCP_TRANSCODE_H */

41
include/osmocom/legacy_mgcp/osmux.h

@ -1,41 +0,0 @@
#ifndef _OPENBSC_OSMUX_H_
#define _OPENBSC_OSMUX_H_
#include <osmocom/netif/osmux.h>
#define OSMUX_PORT 1984
enum {
OSMUX_ROLE_BSC = 0,
OSMUX_ROLE_BSC_NAT,
};
int osmux_init(int role, struct mgcp_config *cfg);
int osmux_enable_endpoint(struct mgcp_endpoint *endp, struct in_addr *addr, uint16_t port);
void osmux_disable_endpoint(struct mgcp_endpoint *endp);
void osmux_allocate_cid(struct mgcp_endpoint *endp);
void osmux_release_cid(struct mgcp_endpoint *endp);
int osmux_xfrm_to_rtp(struct mgcp_endpoint *endp, int type, char *buf, int rc);
int osmux_xfrm_to_osmux(int type, char *buf, int rc, struct mgcp_endpoint *endp);
int osmux_send_dummy(struct mgcp_endpoint *endp);
int osmux_get_cid(void);
void osmux_put_cid(uint8_t osmux_cid);
int osmux_used_cid(void);
enum osmux_state {
OSMUX_STATE_DISABLED = 0,
OSMUX_STATE_NEGOTIATING,
OSMUX_STATE_ACTIVATING,
OSMUX_STATE_ENABLED,
};
enum osmux_usage {
OSMUX_USAGE_OFF = 0,
OSMUX_USAGE_ON = 1,
OSMUX_USAGE_ONLY = 2,
};
#endif

8
include/osmocom/legacy_mgcp/vty.h

@ -1,8 +0,0 @@
#pragma once
#include <osmocom/vty/command.h>
enum mgcp_vty_node {
MGCP_NODE = _LAST_OSMOVTY_NODE + 1,
TRUNK_NODE,
};

10
libosmo-legacy-mgcp.pc.in

@ -1,10 +0,0 @@
prefix=@prefix@
exec_prefix=@exec_prefix@
libdir=@libdir@
includedir=@includedir@
Name: Osmocom legacy Media Gateway Control Protocol library
Description: C Utility Library
Version: @VERSION@
Libs: -L${libdir} -losmo-legacy-mgcp
Cflags: -I${includedir}/

2
osmoappdesc.py

@ -17,11 +17,9 @@
app_configs = {
"osmo-mgw": ["doc/examples/osmo-mgw/osmo-mgw.cfg"],
"osmo-bsc_mgcp": ["doc/examples/osmo-bsc_mgcp/mgcp.cfg"],
}
apps = [(4243, "src/osmo-mgw/osmo-mgw", "OsmoMGW", "osmo-mgw"),
(4243, "src/osmo-bsc_mgcp/osmo-bsc_mgcp", "OpenBSC MGCP", "osmo-bsc_mgcp"),
]
vty_command = ["./src/osmo-mgw/osmo-mgw", "-c",

2
src/Makefile.am

@ -21,13 +21,11 @@ AM_LDFLAGS = \
# Libraries
SUBDIRS = \
libosmo-legacy-mgcp \
libosmo-mgcp-client \
libosmo-mgcp \
$(NULL)
# Programs
SUBDIRS += \
osmo-bsc_mgcp \
osmo-mgw \
$(NULL)

51
src/libosmo-legacy-mgcp/Makefile.am

@ -1,51 +0,0 @@
AM_CPPFLAGS = \
$(all_includes) \
-I$(top_srcdir)/include \
-I$(top_builddir) \
$(NULL)
AM_CFLAGS = \
-Wall \
$(LIBOSMOCORE_CFLAGS) \
$(LIBOSMOVTY_CFLAGS) \
$(LIBOSMONETIF_CFLAGS) \
$(COVERAGE_CFLAGS) \
$(LIBBCG729_CFLAGS) \
$(NULL)
AM_LDFLAGS = \
$(LIBOSMOCORE_LIBS) \
$(LIBOSMOVTY_LIBS) \
$(LIBOSMONETIF_LIBS) \
$(COVERAGE_LDFLAGS) \
$(LIBBCG729_LIBS) \
$(LIBRARY_GSM) \
$(NULL)
# This is not at all related to the release version, but a range of supported
# API versions. Read TODO_RELEASE in the source tree's root!
LEGACY_MGCP_LIBVERSION=1:0:1
lib_LTLIBRARIES = \
libosmo-legacy-mgcp.la \
$(NULL)
noinst_HEADERS = \
g711common.h \
$(NULL)
libosmo_legacy_mgcp_la_SOURCES = \
mgcp_common.c \
mgcp_protocol.c \
mgcp_network.c \
mgcp_vty.c \
mgcp_osmux.c \
mgcp_sdp.c \
$(NULL)
if BUILD_MGCP_TRANSCODING
libosmo_legacy_mgcp_la_SOURCES += \
mgcp_transcode.c \
$(NULL)
endif
libosmo_legacy_mgcp_la_LDFLAGS = $(AM_LDFLAGS) -version-info $(LEGACY_MGCP_LIBVERSION)

187
src/libosmo-legacy-mgcp/g711common.h

@ -1,187 +0,0 @@
/*
* PCM - A-Law conversion
* Copyright (c) 2000 by Abramo Bagnara <abramo@alsa-project.org>
*
* Wrapper for linphone Codec class by Simon Morlat <simon.morlat@linphone.org>
*
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
static inline int val_seg(int val)
{
int r = 0;
val >>= 7; /*7 = 4 + 3*/
if (val & 0xf0) {
val >>= 4;
r += 4;
}
if (val & 0x0c) {
val >>= 2;
r += 2;
}
if (val & 0x02)
r += 1;
return r;
}
/*
* s16_to_alaw() - Convert a 16-bit linear PCM value to 8-bit A-law
*
* s16_to_alaw() accepts an 16-bit integer and encodes it as A-law data.
*
* Linear Input Code Compressed Code
* ------------------------ ---------------
* 0000000wxyza 000wxyz
* 0000001wxyza 001wxyz
* 000001wxyzab 010wxyz
* 00001wxyzabc 011wxyz
* 0001wxyzabcd 100wxyz
* 001wxyzabcde 101wxyz
* 01wxyzabcdef 110wxyz
* 1wxyzabcdefg 111wxyz
*
* For further information see John C. Bellamy's Digital Telephony, 1982,
* John Wiley & Sons, pps 98-111 and 472-476.
* G711 is designed for 13 bits input signal, this function add extra shifting to take this into account.
*/
static inline unsigned char s16_to_alaw(int pcm_val)
{
int mask;
int seg;
unsigned char aval;
if (pcm_val >= 0) {
mask = 0xD5;
} else {
mask = 0x55;
pcm_val = -pcm_val;
if (pcm_val > 0x7fff)
pcm_val = 0x7fff;
}
if (pcm_val < 256) /*256 = 32 << 3*/
aval = pcm_val >> 4; /*4 = 1 + 3*/
else {
/* Convert the scaled magnitude to segment number. */
seg = val_seg(pcm_val);
aval = (seg << 4) | ((pcm_val >> (seg + 3)) & 0x0f);
}
return aval ^ mask;
}
/*
* alaw_to_s16() - Convert an A-law value to 16-bit linear PCM
*
*/
static inline int alaw_to_s16(unsigned char a_val)
{
int t;
int seg;
a_val ^= 0x55;
t = a_val & 0x7f;
if (t < 16)
t = (t << 4) + 8;
else {
seg = (t >> 4) & 0x07;
t = ((t & 0x0f) << 4) + 0x108;
t <<= seg -1;
}
return ((a_val & 0x80) ? t : -t);
}
/*
* s16_to_ulaw() - Convert a linear PCM value to u-law
*
* In order to simplify the encoding process, the original linear magnitude
* is biased by adding 33 which shifts the encoding range from (0 - 8158) to
* (33 - 8191). The result can be seen in the following encoding table:
*
* Biased Linear Input Code Compressed Code
* ------------------------ ---------------
* 00000001wxyza 000wxyz
* 0000001wxyzab 001wxyz
* 000001wxyzabc 010wxyz
* 00001wxyzabcd 011wxyz
* 0001wxyzabcde 100wxyz
* 001wxyzabcdef 101wxyz
* 01wxyzabcdefg 110wxyz
* 1wxyzabcdefgh 111wxyz
*
* Each biased linear code has a leading 1 which identifies the segment
* number. The value of the segment number is equal to 7 minus the number
* of leading 0's. The quantization interval is directly available as the
* four bits wxyz. * The trailing bits (a - h) are ignored.
*
* Ordinarily the complement of the resulting code word is used for
* transmission, and so the code word is complemented before it is returned.
*
* For further information see John C. Bellamy's Digital Telephony, 1982,
* John Wiley & Sons, pps 98-111 and 472-476.
*/
static inline unsigned char s16_to_ulaw(int pcm_val) /* 2's complement (16-bit range) */
{
int mask;
int seg;
unsigned char uval;
if (pcm_val < 0) {
pcm_val = 0x84 - pcm_val;
mask = 0x7f;
} else {
pcm_val += 0x84;
mask = 0xff;
}
if (pcm_val > 0x7fff)
pcm_val = 0x7fff;
/* Convert the scaled magnitude to segment number. */
seg = val_seg(pcm_val);
/*
* Combine the sign, segment, quantization bits;
* and complement the code word.
*/
uval = (seg << 4) | ((pcm_val >> (seg + 3)) & 0x0f);
return uval ^ mask;
}
/*
* ulaw_to_s16() - Convert a u-law value to 16-bit linear PCM
*
* First, a biased linear code is derived from the code word. An unbiased
* output can then be obtained by subtracting 33 from the biased code.
*
* Note that this function expects to be passed the complement of the
* original code word. This is in keeping with ISDN conventions.
*/
static inline int ulaw_to_s16(unsigned char u_val)
{
int t;
/* Complement to obtain normal u-law value. */
u_val = ~u_val;
/*
* Extract and bias the quantization bits. Then
* shift up by the segment number and subtract out the bias.
*/
t = ((u_val & 0x0f) << 3) + 0x84;
t <<= (u_val & 0x70) >> 4;
return ((u_val & 0x80) ? (0x84 - t) : (t - 0x84));
}

54
src/libosmo-legacy-mgcp/mgcp_common.c

@ -1,54 +0,0 @@
/* 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 <osmocom/legacy_mgcp/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(DLMGCP, LOGL_ERROR, "Cannot NUL terminate MGCP message: "
"Length: %d, Buffer size: %d\n",
msgb_l2len(msg), msg->data_len);
return -ENOTSUP;
}
return 0;
}

1202
src/libosmo-legacy-mgcp/mgcp_network.c

File diff suppressed because it is too large Load Diff

588
src/libosmo-legacy-mgcp/mgcp_osmux.c

@ -1,588 +0,0 @@
/*
* (C) 2012-2013 by Pablo Neira Ayuso <pablo@gnumonks.org>
* (C) 2012-2013 by On Waves ehf <http://www.on-waves.com>
* All rights not specifically granted under this license are 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.
*/
#include <stdio.h> /* for printf */
#include <string.h> /* for memcpy */
#include <stdlib.h> /* for abs */
#include <inttypes.h> /* for PRIu64 */
#include <netinet/in.h>
#include <osmocom/core/msgb.h>
#include <osmocom/core/talloc.h>
#include <osmocom/netif/osmux.h>
#include <osmocom/netif/rtp.h>
#include <osmocom/legacy_mgcp/mgcp.h>
#include <osmocom/legacy_mgcp/mgcp_internal.h>
#include <osmocom/legacy_mgcp/osmux.h>
static struct osmo_fd osmux_fd;
static LLIST_HEAD(osmux_handle_list);
struct osmux_handle {
struct llist_head head;
struct osmux_in_handle *in;
struct in_addr rem_addr;
int rem_port;
int refcnt;
};
static void *osmux;