| /* 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 */ |