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libosmocore/src/gsm/mncc.c

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/* mncc.c - utility routines for the MNCC API between the 04.08
* message parsing and the actual Call Control logic */
/* (C) 2008-2017 by Harald Welte <laforge@gnumonks.org>
* (C) 2009 by Andreas Eversberg <Andreas.Eversberg@versatel.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 "config.h"
#ifdef HAVE_SYS_SOCKET_H
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <osmocom/core/msgb.h>
#include <osmocom/core/logging.h>
#include <osmocom/gsm/mncc.h>
/* FIXME FIXME FIXME FIXME FIXME START */
#define MNCC_SETUP_REQ 0x0101
#define MNCC_SETUP_IND 0x0102
#define MNCC_SETUP_RSP 0x0103
#define MNCC_SETUP_CNF 0x0104
#define MNCC_SETUP_COMPL_REQ 0x0105
#define MNCC_SETUP_COMPL_IND 0x0106
/* MNCC_REJ_* is perfomed via MNCC_REL_* */
#define MNCC_CALL_CONF_IND 0x0107
#define MNCC_CALL_PROC_REQ 0x0108
#define MNCC_PROGRESS_REQ 0x0109
#define MNCC_ALERT_REQ 0x010a
#define MNCC_ALERT_IND 0x010b
#define MNCC_NOTIFY_REQ 0x010c
#define MNCC_NOTIFY_IND 0x010d
#define MNCC_DISC_REQ 0x010e
#define MNCC_DISC_IND 0x010f
#define MNCC_REL_REQ 0x0110
#define MNCC_REL_IND 0x0111
#define MNCC_REL_CNF 0x0112
#define MNCC_FACILITY_REQ 0x0113
#define MNCC_FACILITY_IND 0x0114
#define MNCC_START_DTMF_IND 0x0115
#define MNCC_START_DTMF_RSP 0x0116
#define MNCC_START_DTMF_REJ 0x0117
#define MNCC_STOP_DTMF_IND 0x0118
#define MNCC_STOP_DTMF_RSP 0x0119
#define MNCC_MODIFY_REQ 0x011a
#define MNCC_MODIFY_IND 0x011b
#define MNCC_MODIFY_RSP 0x011c
#define MNCC_MODIFY_CNF 0x011d
#define MNCC_MODIFY_REJ 0x011e
#define MNCC_HOLD_IND 0x011f
#define MNCC_HOLD_CNF 0x0120
#define MNCC_HOLD_REJ 0x0121
#define MNCC_RETRIEVE_IND 0x0122
#define MNCC_RETRIEVE_CNF 0x0123
#define MNCC_RETRIEVE_REJ 0x0124
#define MNCC_USERINFO_REQ 0x0125
#define MNCC_USERINFO_IND 0x0126
#define MNCC_REJ_REQ 0x0127
#define MNCC_REJ_IND 0x0128
#define MNCC_BRIDGE 0x0200
#define MNCC_FRAME_RECV 0x0201
#define MNCC_FRAME_DROP 0x0202
#define MNCC_LCHAN_MODIFY 0x0203
#define MNCC_RTP_CREATE 0x0204
#define MNCC_RTP_CONNECT 0x0205
#define MNCC_RTP_FREE 0x0206
#define GSM_TCHF_FRAME 0x0300
#define GSM_TCHF_FRAME_EFR 0x0301
#define GSM_TCHH_FRAME 0x0302
#define GSM_TCH_FRAME_AMR 0x0303
#define GSM_BAD_FRAME 0x03ff
#define MNCC_SOCKET_HELLO 0x0400
#define GSM_MAX_FACILITY 128
#define GSM_MAX_SSVERSION 128
#define GSM_MAX_USERUSER 128
#define MNCC_F_BEARER_CAP 0x0001
#define MNCC_F_CALLED 0x0002
#define MNCC_F_CALLING 0x0004
#define MNCC_F_REDIRECTING 0x0008
#define MNCC_F_CONNECTED 0x0010
#define MNCC_F_CAUSE 0x0020
#define MNCC_F_USERUSER 0x0040
#define MNCC_F_PROGRESS 0x0080
#define MNCC_F_EMERGENCY 0x0100
#define MNCC_F_FACILITY 0x0200
#define MNCC_F_SSVERSION 0x0400
#define MNCC_F_CCCAP 0x0800
#define MNCC_F_KEYPAD 0x1000
#define MNCC_F_SIGNAL 0x2000
struct gsm_mncc {
/* context based information */
uint32_t msg_type;
uint32_t callref;
/* which fields are present */
uint32_t fields;
/* data derived informations (MNCC_F_ based) */
struct gsm_mncc_bearer_cap bearer_cap;
struct gsm_mncc_number called;
struct gsm_mncc_number calling;
struct gsm_mncc_number redirecting;
struct gsm_mncc_number connected;
struct gsm_mncc_cause cause;
struct gsm_mncc_progress progress;
struct gsm_mncc_useruser useruser;
struct gsm_mncc_facility facility;
struct gsm_mncc_cccap cccap;
struct gsm_mncc_ssversion ssversion;
struct {
int sup;
int inv;
} clir;
int signal;
/* data derived information, not MNCC_F based */
int keypad;
int more;
int notify; /* 0..127 */
int emergency;
char imsi[16];
unsigned char lchan_type;
unsigned char lchan_mode;
};
struct gsm_data_frame {
uint32_t msg_type;
uint32_t callref;
unsigned char data[0];
};
#define MNCC_SOCK_VERSION 5
struct gsm_mncc_hello {
uint32_t msg_type;
uint32_t version;
/* send the sizes of the structs */
uint32_t mncc_size;
uint32_t data_frame_size;
/* send some offsets */
uint32_t called_offset;
uint32_t signal_offset;
uint32_t emergency_offset;
uint32_t lchan_type_offset;
};
struct gsm_mncc_rtp {
uint32_t msg_type;
uint32_t callref;
uint32_t ip;
uint16_t port;
uint32_t payload_type;
uint32_t payload_msg_type;
};
struct gsm_mncc_bridge {
uint32_t msg_type;
uint32_t callref[2];
};
/* FIXME FIXME FIXME FIXME FIXME END */
const struct value_string osmo_mncc_names[] = {
{ MNCC_SETUP_REQ, "MNCC_SETUP_REQ" },
{ MNCC_SETUP_IND, "MNCC_SETUP_IND" },
{ MNCC_SETUP_RSP, "MNCC_SETUP_RSP" },
{ MNCC_SETUP_CNF, "MNCC_SETUP_CNF" },
{ MNCC_SETUP_COMPL_REQ, "MNCC_SETUP_COMPL_REQ" },
{ MNCC_SETUP_COMPL_IND, "MNCC_SETUP_COMPL_IND" },
{ MNCC_CALL_CONF_IND, "MNCC_CALL_CONF_IND" },
{ MNCC_CALL_PROC_REQ, "MNCC_CALL_PROC_REQ" },
{ MNCC_PROGRESS_REQ, "MNCC_PROGRESS_REQ" },
{ MNCC_ALERT_REQ, "MNCC_ALERT_REQ" },
{ MNCC_ALERT_IND, "MNCC_ALERT_IND" },
{ MNCC_NOTIFY_REQ, "MNCC_NOTIFY_REQ" },
{ MNCC_NOTIFY_IND, "MNCC_NOTIFY_IND" },
{ MNCC_DISC_REQ, "MNCC_DISC_REQ" },
{ MNCC_DISC_IND, "MNCC_DISC_IND" },
{ MNCC_REL_REQ, "MNCC_REL_REQ" },
{ MNCC_REL_IND, "MNCC_REL_IND" },
{ MNCC_REL_CNF, "MNCC_REL_CNF" },
{ MNCC_FACILITY_REQ, "MNCC_FACILITY_REQ" },
{ MNCC_FACILITY_IND, "MNCC_FACILITY_IND" },
{ MNCC_START_DTMF_IND, "MNCC_START_DTMF_IND" },
{ MNCC_START_DTMF_RSP, "MNCC_START_DTMF_RSP" },
{ MNCC_START_DTMF_REJ, "MNCC_START_DTMF_REJ" },
{ MNCC_STOP_DTMF_IND, "MNCC_STOP_DTMF_IND" },
{ MNCC_STOP_DTMF_RSP, "MNCC_STOP_DTMF_RSP" },
{ MNCC_MODIFY_REQ, "MNCC_MODIFY_REQ" },
{ MNCC_MODIFY_IND, "MNCC_MODIFY_IND" },
{ MNCC_MODIFY_RSP, "MNCC_MODIFY_RSP" },
{ MNCC_MODIFY_CNF, "MNCC_MODIFY_CNF" },
{ MNCC_MODIFY_REJ, "MNCC_MODIFY_REJ" },
{ MNCC_HOLD_IND, "MNCC_HOLD_IND" },
{ MNCC_HOLD_CNF, "MNCC_HOLD_CNF" },
{ MNCC_HOLD_REJ, "MNCC_HOLD_REJ" },
{ MNCC_RETRIEVE_IND, "MNCC_RETRIEVE_IND" },
{ MNCC_RETRIEVE_CNF, "MNCC_RETRIEVE_CNF" },
{ MNCC_RETRIEVE_REJ, "MNCC_RETRIEVE_REJ" },
{ MNCC_USERINFO_REQ, "MNCC_USERINFO_REQ" },
{ MNCC_USERINFO_IND, "MNCC_USERINFO_IND" },
{ MNCC_REJ_REQ, "MNCC_REJ_REQ" },
{ MNCC_REJ_IND, "MNCC_REJ_IND" },
{ MNCC_BRIDGE, "MNCC_BRIDGE" },
{ MNCC_FRAME_RECV, "MNCC_FRAME_RECV" },
{ MNCC_FRAME_DROP, "MNCC_FRAME_DROP" },
{ MNCC_LCHAN_MODIFY, "MNCC_LCHAN_MODIFY" },
{ MNCC_RTP_CREATE, "MNCC_RTP_CREATE" },
{ MNCC_RTP_CONNECT, "MNCC_RTP_CONNECT" },
{ MNCC_RTP_FREE, "MNCC_RTP_FREE" },
{ GSM_TCHF_FRAME, "GSM_TCHF_FRAME" },
{ GSM_TCHF_FRAME_EFR, "GSM_TCHF_FRAME_EFR" },
{ GSM_TCHH_FRAME, "GSM_TCHH_FRAME" },
{ GSM_TCH_FRAME_AMR, "GSM_TCH_FRAME_AMR" },
{ GSM_BAD_FRAME, "GSM_BAD_FRAME" },
{ MNCC_SOCKET_HELLO, "MNCC_SOCKET_HELLO" },
{ 0, NULL },
};
static void mncc_dump_rtp(struct msgb *str, const uint8_t *msg, unsigned int len)
{
const struct gsm_mncc_rtp *rtp = (const struct gsm_mncc_rtp *) msg;
struct in_addr ia;
if (len < sizeof(*rtp)) {
msgb_printf(str, "short MNCC RTP message (%u bytes)", len);
return;
}
ia.s_addr = rtp->ip;
msgb_printf(str, "%s(ref=0x%08x, ip=%s, port=%u, pt=%u, pt_mt=%u)",
osmo_mncc_name(rtp->msg_type), rtp->callref, inet_ntoa(ia),
ntohs(rtp->port), rtp->payload_type, rtp->payload_msg_type);
}
static void mncc_dump_data(struct msgb *str, const uint8_t *msg, unsigned int len)
{
const struct gsm_data_frame *data = (const struct gsm_data_frame *) msg;
if (len < sizeof(*data)) {
msgb_printf(str, "short MNCC DATA message (%u bytes)", len);
return;
}
msgb_printf(str, "%s(ref=0x%08x, data=%s)", osmo_mncc_name(data->msg_type), data->callref,
osmo_hexdump_nospc(data->data, len - sizeof(*data)));
}
static void mncc_dump_hello(struct msgb *str, const uint8_t *msg, unsigned int len)
{
const struct gsm_mncc_hello *hello = (const struct gsm_mncc_hello *) msg;
if (len < sizeof(*hello)) {
msgb_printf(str, "short MNCC HELLO message (%u bytes)", len);
return;
}
msgb_printf(str, "%s(ver=%u, mncc_sz=%u, data_size=%u called_off=%u, signal_off=%u, "
"emerg_off=%u, lchan_t_off=%u)\n", osmo_mncc_name(hello->msg_type),
hello->version, hello->mncc_size, hello->data_frame_size, hello->called_offset,
hello->signal_offset, hello->emergency_offset, hello->lchan_type_offset);
}
static void msg_dump_number(struct msgb *str, const char *pfx, const struct gsm_mncc_number *num)
{
msgb_printf(str, "%s(%d,%d,%d,%d,%s)", pfx, num->type, num->plan, num->present, num->screen,
num->number);
}
static void mncc_dump_bridge(struct msgb *str, const uint8_t *msg, unsigned int len)
{
const struct gsm_mncc_bridge *bridge = (const struct gsm_mncc_bridge *)msg;
if (len < sizeof(*bridge)) {
msgb_printf(str, "short MNCC BRIDGE message (%u bytes)", len);
return;
}
msgb_printf(str, "%s(call_a=0x%08x, call_b=0x%08x)", osmo_mncc_name(bridge->msg_type),
bridge->callref[0], bridge->callref[1]);
}
static void mncc_dump_sign(struct msgb *str, const uint8_t *msg, unsigned int len)
{
const struct gsm_mncc *sign = (const struct gsm_mncc *) msg;
if (len < sizeof(*sign)) {
msgb_printf(str, "short MNCC SIGN message (%u bytes)", len);
return;
}
msgb_printf(str, "%s(ref=0x%08x, imsi=%s", osmo_mncc_name(sign->msg_type), sign->callref,
sign->imsi);
//if (sign->fields & MNCC_F_BEARER_CAP)
// msgb_printf(str, ", bcap=%s", osmo_hexdump_nospc());
if (sign->fields & MNCC_F_CALLED)
msg_dump_number(str, ", called=", &sign->called);
if (sign->fields & MNCC_F_CALLING)
msg_dump_number(str, ", calling=", &sign->calling);
if (sign->fields & MNCC_F_REDIRECTING)
msg_dump_number(str, ", redirecting=", &sign->redirecting);
if (sign->fields & MNCC_F_CONNECTED)
msg_dump_number(str, ", connected=", &sign->connected);
if (sign->fields & MNCC_F_CAUSE) {
msgb_printf(str, ", cause=(%d,%d,%d,%d,%d,'%s')", sign->cause.location,
sign->cause.coding, sign->cause.rec, sign->cause.rec_val,
sign->cause.value, sign->cause.diag_len ? sign->cause.diag : "");
}
if (sign->fields & MNCC_F_USERUSER) {
msgb_printf(str, ", useruser=(%u, '%s')", sign->useruser.proto,
sign->useruser.info);
}
if (sign->fields & MNCC_F_PROGRESS) {
msgb_printf(str, ", progress=(%d, %d, %d)", sign->progress.coding,
sign->progress.location, sign->progress.descr);
}
if (sign->fields & MNCC_F_EMERGENCY)
msgb_printf(str, ", emergency=%d", sign->emergency);
if (sign->fields & MNCC_F_FACILITY)
msgb_printf(str, ", facility='%s'", sign->facility.info);
if (sign->fields & MNCC_F_SSVERSION)
msgb_printf(str, ", ssversion='%s'", sign->ssversion.info);
if (sign->fields & MNCC_F_CCCAP)
msgb_printf(str, ", cccap=(%d, %d)", sign->cccap.dtmf, sign->cccap.pcp);
if (sign->fields & MNCC_F_KEYPAD)
msgb_printf(str, ", keypad=%d", sign->keypad);
if (sign->fields & MNCC_F_SIGNAL)
msgb_printf(str, ", signal=%d", sign->signal);
msgb_printf(str, ", clir.sup=%d, clir.inv=%d, more=%d, notify=%d)", sign->clir.sup,
sign->clir.inv, sign->more, sign->notify);
/* lchan_type/lchan_mode? */
}
struct msgb *osmo_mncc_stringify(const uint8_t *msg, unsigned int len)
{
uint32_t msg_type;
struct msgb *str = msgb_alloc(2048, __func__);
OSMO_ASSERT(str);
if (len <= sizeof(msg_type)) {
msgb_printf(str, "short MNCC message (%d bytes)", len);
return NULL;
}
msg_type = *(const uint32_t *)msg;
switch (msg_type) {
case MNCC_RTP_CREATE:
case MNCC_RTP_CONNECT:
case MNCC_RTP_FREE:
mncc_dump_rtp(str, msg, len);
break;
case GSM_TCHF_FRAME:
case GSM_TCHF_FRAME_EFR:
case GSM_TCHH_FRAME:
case GSM_TCH_FRAME_AMR:
case GSM_BAD_FRAME:
mncc_dump_data(str, msg, len);
break;
case MNCC_SOCKET_HELLO:
mncc_dump_hello(str, msg, len);
break;
case MNCC_BRIDGE:
mncc_dump_bridge(str, msg, len);
break;
default:
mncc_dump_sign(str, msg, len);
break;
}
return str;
}
void _osmo_mncc_log(int ss, int level, const char *file, int line, const char *prefix,
const uint8_t *msg, unsigned int len)
{
struct msgb *str;
if (!log_check_level(ss, level))
return;
str = osmo_mncc_stringify(msg, len);
if (!str)
return;
logp2(ss, level, file, line, 0, "%s%s\n", prefix, str->data);
msgb_free(str);
}
#endif /* HAVE_SYS_SOCKET_H */
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